Hematologic Malignancies

As a severe shortage drags on and prices soar, transplant centers have been struggling to cope with the paucity and price of fludarabine, a chemotherapy drug that has become an essential component of stem-cell transplants for some blood cancers.

At Oregon Health and Science University, for example, an extensive algorithm now offers guidance through a thicket of alternative options, from adjusting doses and using substitutes to delaying treatment. Meanwhile, some institutions have enlisted ethicists and attorneys to guide their decisions on which patients will have to wait for potentially life-saving treatment.

Even as surgeons turn to alternatives, advocates for transplantation in hematology have warned about the potential for harm.

“This continued fludarabine shortage is forcing centers to use non–[Food and Drug Administration] approved lymphodepleting regimens that may negatively impact the success of a possibly lifesaving CAR-T therapy,” Brenda Sandmaier, MD, president of the Transplantation and Cellular Therapy American Society, and Jeffery Auletta, MD, a senior vice president with the National Marrow Donor, said in a June 30 letter to the FDA. The physicians added that they “request the FDA to take immediate action on this critical shortage. Many centers currently have no ability to purchase fludarabine through their suppliers and have no estimated time frame for return of availability. Other centers are limited to mere weeks of supply, with continued uncertainty of future availability.”

In October, less than 4 months after that letter was sent, one of the manufacturers of fludarabine – Areva Pharmaceuticals – marked up the price of fludarabine to $2,736 per vial, 10-20 times that of two other makers of the drug.
 

In new treatment era, fludarabine remains crucial

In 2015, ASH Clinical News – a publication of the American Society of Hematology – invited a pair of hematologists to discuss whether fludarabine is “dead” as a front-line treatment for chronic lymphocytic leukemia (CLL). “Fludarabine is not dead yet, but the data from those and other long-term trials may be the final nail in its coffin,” said Mitchell Smith, MD, PhD, who was then with Cleveland Clinic and now works for George Washington University.

Seven years later, the role of fludarabine as a long-term chemotherapeutic agent in blood cancer has definitely evolved. Just as oncologists predicted back in 2015, “the use of fludarabine declined for the primary management of CLL and other B cell malignancies, due to the development of targeted therapies such as BTK inhibitors, venetoclax, and other agents,” Memorial Sloan Kettering hematologic oncologist Anthony Mato, MD, said in an interview.

But the drug “remains a critical agent for conditioning the immune system for cellular therapies such as allogeneic stem cell transplantation and CAR-T cells,” Dr. Mato said.

Nirav Shah, MD, a hematologic oncologist at the Medical College of Wisconsin, explained in an interview that “conditioning” in the stem-cell transplant context refers to “wiping out” the immune system, allowing the donor’s stem cells to avoid rejection. “It’s a commonly used drug,” he said, “and shortage was not really a concern that people faced until this year.”
 

As shortage continues, price hike brings yet another hit

The first reports of fludarabine being in short supply surfaced about a year ago. According to a Nov. 2 update from the American Society of Health-System Pharmacists, five companies now manufacture fludarabine, and all of them report shortages. Areva, which dramatically raised its price, is accepting direct orders. Leucadia and Teva don’t know when the drug will be available; and Fresenius Kabi and Sagent expect availability in early 2023.

Areva, Leucadia, and Teva didn’t provide reasons for their shortages. Fresenius Kabi blamed increased demand, and Sagent pointed to manufacturing delays. Pfizer, another manufacturer, had a tiny market share and stopped making fludarabine in 2020, according to the pharmacist society.

In a May 12 press release, a company called Lannett announced it would take over U.S. distribution of fludarabine for Areva and suggested that the supply shortage would be lucrative: “While total U.S. sales for the 12 months ended March 2022 of Fludarabine Phosphate for injection, USP, 50 mg/2mL were approximately $4.9 million, according to IQVIA, the current market value is believed to be higher due to the recent market disruptions.”

“We were all shocked and outraged when Areva came out with the new, dramatically higher prices,” Bill Greene, PharmD, chief pharmaceutical officer at St. Jude Children’s Research Hospital, said in a recent interview.

In a prior interview, conducted during the summer of 2022, Dr. Greene addressed the topic of hematologic drug shortages. Back then he noted that he was seeking emergency supplies of fludarabine, since all five manufacturers reported having no stock available.

Interviewed again in November 2022, Dr. Greene noted that the hospital “had been able to stay ahead of the need and meet the needs of our patients” through arrangements with Teva and Fresenius Kabi. “In cases of patient need, we certainly are willing to pay a higher product price if that’s what it takes to get it – assuming the product is a quality product.”

The Medical College of Wisconsin’s Dr. Shah said insurers may refuse to cover the higher price, sticking medical institutions with the bill.
 

Alternatives abound, but do they suffice?

There is some good news on the fludarabine shortage front. Areva recently alerted providers that it was releasing fludarabine from non-FDA-approved suppliers with the agency’s permission, and Accord Healthcare said it received permission to sell fludarabine that was marketed in Canada.

Another option – oral fludarabine instead of the standard IV version – remains unavailable in the United States. According to the June letter to the FDA from the American Society for Transplantation and Cellular Therapy and National Marrow Donor Program, it “might be an appropriate alternative” and is available in Europe, Canada and Australia.

The letter warns that “transplant centers have also been forced to move away from fludarabine-based regimens and use alternative drugs such as cladribine or clofarabine, which are both significantly less studied and rely on single-center experience or limited phase II data. ... The limited availability of fludarabine is leading to the use of alternative regimens that are known to be more toxic or understudied alternatives with unknown long-term clinical effects or harms to patients.”

In a November 2022 report published in Transplantation and Cellular Therapy, Dr. Shah and colleagues noted that institutions are adopting strategies such as “(1) pharmacy dose banding and rounding down to save vials, even if a >5% reduction was required; (2) administering all dosing of fludarabine based not on actual body weight but on adjusted body weight; and (3) switching the billing of fludarabine from single-dose vials to billing by dose delivery.”

If the shortage continues, “it becomes necessary for centers to establish algorithms for management now,” they wrote. “Substitution of such agents as bendamustine and cladribine can be considered ... [and] another acceptable solution could be the substitution of clofarabine for fludarabine.”

Still, there are many unanswered questions. “The challenge is that these alternative regimens have not been extensively studied in a large population,” Dr. Shah said. “You have to be more mindful of potential side effects and risks, and the biggest concern is efficacy. Is changing the drug going to be detrimental to a patient’s outcome? To be honest, we don’t know the answer to that.”

Dr. Mato disclosed ties with TG Therapeutics, Pharmacyclics, AbbVie, Acerta, Adaptive Biotechnologies, AstraZeneca, BeiGene, BioPharma, BMS, Curio, Dava, DTRM, Genentech, Genmab, Janssen, Johnson & Johnson, LOXO, Medscape, Nurix, Octapharma, PER, PerView, and Pfizer. Dr. Greene and Dr. Shah have no disclosures.

As a severe shortage drags on and prices soar, transplant centers have been struggling to cope with the paucity and price of fludarabine, a chemotherapy drug that has become an essential component of stem-cell transplants for some blood cancers.

At Oregon Health and Science University, for example, an extensive algorithm now offers guidance through a thicket of alternative options, from adjusting doses and using substitutes to delaying treatment. Meanwhile, some institutions have enlisted ethicists and attorneys to guide their decisions on which patients will have to wait for potentially life-saving treatment.

Even as surgeons turn to alternatives, advocates for transplantation in hematology have warned about the potential for harm.

“This continued fludarabine shortage is forcing centers to use non–[Food and Drug Administration] approved lymphodepleting regimens that may negatively impact the success of a possibly lifesaving CAR-T therapy,” Brenda Sandmaier, MD, president of the Transplantation and Cellular Therapy American Society, and Jeffery Auletta, MD, a senior vice president with the National Marrow Donor, said in a June 30 letter to the FDA. The physicians added that they “request the FDA to take immediate action on this critical shortage. Many centers currently have no ability to purchase fludarabine through their suppliers and have no estimated time frame for return of availability. Other centers are limited to mere weeks of supply, with continued uncertainty of future availability.”

In October, less than 4 months after that letter was sent, one of the manufacturers of fludarabine – Areva Pharmaceuticals – marked up the price of fludarabine to $2,736 per vial, 10-20 times that of two other makers of the drug.
 

In new treatment era, fludarabine remains crucial

In 2015, ASH Clinical News – a publication of the American Society of Hematology – invited a pair of hematologists to discuss whether fludarabine is “dead” as a front-line treatment for chronic lymphocytic leukemia (CLL). “Fludarabine is not dead yet, but the data from those and other long-term trials may be the final nail in its coffin,” said Mitchell Smith, MD, PhD, who was then with Cleveland Clinic and now works for George Washington University.

Seven years later, the role of fludarabine as a long-term chemotherapeutic agent in blood cancer has definitely evolved. Just as oncologists predicted back in 2015, “the use of fludarabine declined for the primary management of CLL and other B cell malignancies, due to the development of targeted therapies such as BTK inhibitors, venetoclax, and other agents,” Memorial Sloan Kettering hematologic oncologist Anthony Mato, MD, said in an interview.

But the drug “remains a critical agent for conditioning the immune system for cellular therapies such as allogeneic stem cell transplantation and CAR-T cells,” Dr. Mato said.

Nirav Shah, MD, a hematologic oncologist at the Medical College of Wisconsin, explained in an interview that “conditioning” in the stem-cell transplant context refers to “wiping out” the immune system, allowing the donor’s stem cells to avoid rejection. “It’s a commonly used drug,” he said, “and shortage was not really a concern that people faced until this year.”
 

As shortage continues, price hike brings yet another hit

The first reports of fludarabine being in short supply surfaced about a year ago. According to a Nov. 2 update from the American Society of Health-System Pharmacists, five companies now manufacture fludarabine, and all of them report shortages. Areva, which dramatically raised its price, is accepting direct orders. Leucadia and Teva don’t know when the drug will be available; and Fresenius Kabi and Sagent expect availability in early 2023.

Areva, Leucadia, and Teva didn’t provide reasons for their shortages. Fresenius Kabi blamed increased demand, and Sagent pointed to manufacturing delays. Pfizer, another manufacturer, had a tiny market share and stopped making fludarabine in 2020, according to the pharmacist society.

In a May 12 press release, a company called Lannett announced it would take over U.S. distribution of fludarabine for Areva and suggested that the supply shortage would be lucrative: “While total U.S. sales for the 12 months ended March 2022 of Fludarabine Phosphate for injection, USP, 50 mg/2mL were approximately $4.9 million, according to IQVIA, the current market value is believed to be higher due to the recent market disruptions.”

“We were all shocked and outraged when Areva came out with the new, dramatically higher prices,” Bill Greene, PharmD, chief pharmaceutical officer at St. Jude Children’s Research Hospital, said in a recent interview.

In a prior interview, conducted during the summer of 2022, Dr. Greene addressed the topic of hematologic drug shortages. Back then he noted that he was seeking emergency supplies of fludarabine, since all five manufacturers reported having no stock available.

Interviewed again in November 2022, Dr. Greene noted that the hospital “had been able to stay ahead of the need and meet the needs of our patients” through arrangements with Teva and Fresenius Kabi. “In cases of patient need, we certainly are willing to pay a higher product price if that’s what it takes to get it – assuming the product is a quality product.”

The Medical College of Wisconsin’s Dr. Shah said insurers may refuse to cover the higher price, sticking medical institutions with the bill.
 

Alternatives abound, but do they suffice?

There is some good news on the fludarabine shortage front. Areva recently alerted providers that it was releasing fludarabine from non-FDA-approved suppliers with the agency’s permission, and Accord Healthcare said it received permission to sell fludarabine that was marketed in Canada.

Another option – oral fludarabine instead of the standard IV version – remains unavailable in the United States. According to the June letter to the FDA from the American Society for Transplantation and Cellular Therapy and National Marrow Donor Program, it “might be an appropriate alternative” and is available in Europe, Canada and Australia.

The letter warns that “transplant centers have also been forced to move away from fludarabine-based regimens and use alternative drugs such as cladribine or clofarabine, which are both significantly less studied and rely on single-center experience or limited phase II data. ... The limited availability of fludarabine is leading to the use of alternative regimens that are known to be more toxic or understudied alternatives with unknown long-term clinical effects or harms to patients.”

In a November 2022 report published in Transplantation and Cellular Therapy, Dr. Shah and colleagues noted that institutions are adopting strategies such as “(1) pharmacy dose banding and rounding down to save vials, even if a >5% reduction was required; (2) administering all dosing of fludarabine based not on actual body weight but on adjusted body weight; and (3) switching the billing of fludarabine from single-dose vials to billing by dose delivery.”

If the shortage continues, “it becomes necessary for centers to establish algorithms for management now,” they wrote. “Substitution of such agents as bendamustine and cladribine can be considered ... [and] another acceptable solution could be the substitution of clofarabine for fludarabine.”

Still, there are many unanswered questions. “The challenge is that these alternative regimens have not been extensively studied in a large population,” Dr. Shah said. “You have to be more mindful of potential side effects and risks, and the biggest concern is efficacy. Is changing the drug going to be detrimental to a patient’s outcome? To be honest, we don’t know the answer to that.”

Dr. Mato disclosed ties with TG Therapeutics, Pharmacyclics, AbbVie, Acerta, Adaptive Biotechnologies, AstraZeneca, BeiGene, BioPharma, BMS, Curio, Dava, DTRM, Genentech, Genmab, Janssen, Johnson & Johnson, LOXO, Medscape, Nurix, Octapharma, PER, PerView, and Pfizer. Dr. Greene and Dr. Shah have no disclosures.

As a severe shortage drags on and prices soar, transplant centers have been struggling to cope with the paucity and price of fludarabine, a chemotherapy drug that has become an essential component of stem-cell transplants for some blood cancers.

At Oregon Health and Science University, for example, an extensive algorithm now offers guidance through a thicket of alternative options, from adjusting doses and using substitutes to delaying treatment. Meanwhile, some institutions have enlisted ethicists and attorneys to guide their decisions on which patients will have to wait for potentially life-saving treatment.

Even as surgeons turn to alternatives, advocates for transplantation in hematology have warned about the potential for harm.

“This continued fludarabine shortage is forcing centers to use non–[Food and Drug Administration] approved lymphodepleting regimens that may negatively impact the success of a possibly lifesaving CAR-T therapy,” Brenda Sandmaier, MD, president of the Transplantation and Cellular Therapy American Society, and Jeffery Auletta, MD, a senior vice president with the National Marrow Donor, said in a June 30 letter to the FDA. The physicians added that they “request the FDA to take immediate action on this critical shortage. Many centers currently have no ability to purchase fludarabine through their suppliers and have no estimated time frame for return of availability. Other centers are limited to mere weeks of supply, with continued uncertainty of future availability.”

In October, less than 4 months after that letter was sent, one of the manufacturers of fludarabine – Areva Pharmaceuticals – marked up the price of fludarabine to $2,736 per vial, 10-20 times that of two other makers of the drug.
 

In new treatment era, fludarabine remains crucial

In 2015, ASH Clinical News – a publication of the American Society of Hematology – invited a pair of hematologists to discuss whether fludarabine is “dead” as a front-line treatment for chronic lymphocytic leukemia (CLL). “Fludarabine is not dead yet, but the data from those and other long-term trials may be the final nail in its coffin,” said Mitchell Smith, MD, PhD, who was then with Cleveland Clinic and now works for George Washington University.

Seven years later, the role of fludarabine as a long-term chemotherapeutic agent in blood cancer has definitely evolved. Just as oncologists predicted back in 2015, “the use of fludarabine declined for the primary management of CLL and other B cell malignancies, due to the development of targeted therapies such as BTK inhibitors, venetoclax, and other agents,” Memorial Sloan Kettering hematologic oncologist Anthony Mato, MD, said in an interview.

But the drug “remains a critical agent for conditioning the immune system for cellular therapies such as allogeneic stem cell transplantation and CAR-T cells,” Dr. Mato said.

Nirav Shah, MD, a hematologic oncologist at the Medical College of Wisconsin, explained in an interview that “conditioning” in the stem-cell transplant context refers to “wiping out” the immune system, allowing the donor’s stem cells to avoid rejection. “It’s a commonly used drug,” he said, “and shortage was not really a concern that people faced until this year.”
 

As shortage continues, price hike brings yet another hit

The first reports of fludarabine being in short supply surfaced about a year ago. According to a Nov. 2 update from the American Society of Health-System Pharmacists, five companies now manufacture fludarabine, and all of them report shortages. Areva, which dramatically raised its price, is accepting direct orders. Leucadia and Teva don’t know when the drug will be available; and Fresenius Kabi and Sagent expect availability in early 2023.

Areva, Leucadia, and Teva didn’t provide reasons for their shortages. Fresenius Kabi blamed increased demand, and Sagent pointed to manufacturing delays. Pfizer, another manufacturer, had a tiny market share and stopped making fludarabine in 2020, according to the pharmacist society.

In a May 12 press release, a company called Lannett announced it would take over U.S. distribution of fludarabine for Areva and suggested that the supply shortage would be lucrative: “While total U.S. sales for the 12 months ended March 2022 of Fludarabine Phosphate for injection, USP, 50 mg/2mL were approximately $4.9 million, according to IQVIA, the current market value is believed to be higher due to the recent market disruptions.”

“We were all shocked and outraged when Areva came out with the new, dramatically higher prices,” Bill Greene, PharmD, chief pharmaceutical officer at St. Jude Children’s Research Hospital, said in a recent interview.

In a prior interview, conducted during the summer of 2022, Dr. Greene addressed the topic of hematologic drug shortages. Back then he noted that he was seeking emergency supplies of fludarabine, since all five manufacturers reported having no stock available.

Interviewed again in November 2022, Dr. Greene noted that the hospital “had been able to stay ahead of the need and meet the needs of our patients” through arrangements with Teva and Fresenius Kabi. “In cases of patient need, we certainly are willing to pay a higher product price if that’s what it takes to get it – assuming the product is a quality product.”

The Medical College of Wisconsin’s Dr. Shah said insurers may refuse to cover the higher price, sticking medical institutions with the bill.
 

Alternatives abound, but do they suffice?

There is some good news on the fludarabine shortage front. Areva recently alerted providers that it was releasing fludarabine from non-FDA-approved suppliers with the agency’s permission, and Accord Healthcare said it received permission to sell fludarabine that was marketed in Canada.

Another option – oral fludarabine instead of the standard IV version – remains unavailable in the United States. According to the June letter to the FDA from the American Society for Transplantation and Cellular Therapy and National Marrow Donor Program, it “might be an appropriate alternative” and is available in Europe, Canada and Australia.

The letter warns that “transplant centers have also been forced to move away from fludarabine-based regimens and use alternative drugs such as cladribine or clofarabine, which are both significantly less studied and rely on single-center experience or limited phase II data. ... The limited availability of fludarabine is leading to the use of alternative regimens that are known to be more toxic or understudied alternatives with unknown long-term clinical effects or harms to patients.”

In a November 2022 report published in Transplantation and Cellular Therapy, Dr. Shah and colleagues noted that institutions are adopting strategies such as “(1) pharmacy dose banding and rounding down to save vials, even if a >5% reduction was required; (2) administering all dosing of fludarabine based not on actual body weight but on adjusted body weight; and (3) switching the billing of fludarabine from single-dose vials to billing by dose delivery.”

If the shortage continues, “it becomes necessary for centers to establish algorithms for management now,” they wrote. “Substitution of such agents as bendamustine and cladribine can be considered ... [and] another acceptable solution could be the substitution of clofarabine for fludarabine.”

Still, there are many unanswered questions. “The challenge is that these alternative regimens have not been extensively studied in a large population,” Dr. Shah said. “You have to be more mindful of potential side effects and risks, and the biggest concern is efficacy. Is changing the drug going to be detrimental to a patient’s outcome? To be honest, we don’t know the answer to that.”

Dr. Mato disclosed ties with TG Therapeutics, Pharmacyclics, AbbVie, Acerta, Adaptive Biotechnologies, AstraZeneca, BeiGene, BioPharma, BMS, Curio, Dava, DTRM, Genentech, Genmab, Janssen, Johnson & Johnson, LOXO, Medscape, Nurix, Octapharma, PER, PerView, and Pfizer. Dr. Greene and Dr. Shah have no disclosures.

The early stages of the COVID-19 pandemic caused an average treatment delay of 3.2 months for 53% of patients with cutaneous T-cell lymphoma (CTCL), results from a retrospective study of nine international centers showed. However, among patients with CTCL diagnosed with COVID-19 during that time, no cases were acquired from outpatient visits.

“Delays in therapy for patients with cutaneous lymphomas should likely be avoided,” two of the study authors, Larisa J. Geskin, MD, of the department of dermatology at Columbia University Irving Medical Center, New York, and Bradley D. Kwinta, a medical student at Columbia University, told this news organization in a combined response via email.

“Continuing treatment and maintenance therapy appears critical to avoiding disease progression, highlighting the importance of maintenance therapy in CTCL,” they said. “These patients can be safely treated according to established treatment protocols while practicing physical distancing and using personal protective equipment without significantly increasing their risk of COVID-19 infection.”

The United States Cutaneous Lymphoma Consortium and the European Organization for Research and Treatment of Cancer developed emergency guidelines for the management of patients with cutaneous lymphomas during the pandemic to ensure patient safety, and the International Society for Cutaneous Lymphomas created an International Cutaneous Lymphomas Pandemic Section to collect data to assess the impact of these guidelines.

“Using this data, we can determine if these measures were effective in preventing COVID-19 infection, what the impact was of maintenance therapy, and how delays in treatment affected disease outcomes in CTCL patients,” the authors and their colleagues wrote in the study, which was published in the Journal of the American Academy of Dermatology.

They retrospectively analyzed data from the electronic medical records of 149 patients with CTCL who were being managed at one of nine international academic medical centers in seven countries from March to October 2020. Slightly more than half (56%) were male, 70% were White, 18% were Black, 52% had stage IA-IIA disease, and 19% acquired COVID-19 during the study period.

Of the 149 patients, 79 (53%) experienced a mean treatment delay of 3.2 months (range, 10 days to 10 months). After adjusting for age, race, biological sex, COVID-19 status, and disease stage, treatment delay was associated with a significant risk of disease relapse or progression across all stages (odds ratio, 5.00; P < .001). Specifically, for each additional month that a patient experienced treatment delay, the odds of disease progression increased by 37% (OR, 1.37; P < .001).

A total of 28 patients with CTCL (19%) were diagnosed with COVID-19, but none were acquired from outpatient office visits. Patients who contracted COVID-19 did not have a statistically significant increase in odds of disease progression, compared with COVID-negative patients (OR, 0.41; P = .07).

According to Dr. Geskin, who is also director of the Comprehensive Skin Cancer Center in the division of cutaneous oncology in the department of dermatology at Columbia, and Mr. Kwinta, no clinical trials exist to inform maintenance protocols in patients with cutaneous lymphomas. “There are also no randomized and controlled observational studies that demonstrate the impact that therapy delay may have on disease outcomes,” they said in the email. “In fact, the need for maintenance therapy for CTCL is often debated. Our findings demonstrate the importance of continuing treatment and the use of maintenance therapy in avoiding disease progression in these incurable lymphomas.”

They acknowledged certain limitations of the study, including its retrospective observational design. “Therefore, we cannot establish a definitive causal link between treatment delay and disease progression,” they said. “Our cohort of patients were on various and often multiple therapies, making it hard to extrapolate our data to discern which maintenance therapies were most effective in preventing disease progression.”

In addition, their data only includes patients from March to October 2020, “before the discovery of new variants and the development of COVID-19 vaccines,” they added. “Additional studies would be required to draw conclusions on how COVID-19 vaccines may affect patients with CTCL, including outcomes in the setting of new variants.”

The authors reported having no financial disclosures.

The early stages of the COVID-19 pandemic caused an average treatment delay of 3.2 months for 53% of patients with cutaneous T-cell lymphoma (CTCL), results from a retrospective study of nine international centers showed. However, among patients with CTCL diagnosed with COVID-19 during that time, no cases were acquired from outpatient visits.

“Delays in therapy for patients with cutaneous lymphomas should likely be avoided,” two of the study authors, Larisa J. Geskin, MD, of the department of dermatology at Columbia University Irving Medical Center, New York, and Bradley D. Kwinta, a medical student at Columbia University, told this news organization in a combined response via email.

“Continuing treatment and maintenance therapy appears critical to avoiding disease progression, highlighting the importance of maintenance therapy in CTCL,” they said. “These patients can be safely treated according to established treatment protocols while practicing physical distancing and using personal protective equipment without significantly increasing their risk of COVID-19 infection.”

The United States Cutaneous Lymphoma Consortium and the European Organization for Research and Treatment of Cancer developed emergency guidelines for the management of patients with cutaneous lymphomas during the pandemic to ensure patient safety, and the International Society for Cutaneous Lymphomas created an International Cutaneous Lymphomas Pandemic Section to collect data to assess the impact of these guidelines.

“Using this data, we can determine if these measures were effective in preventing COVID-19 infection, what the impact was of maintenance therapy, and how delays in treatment affected disease outcomes in CTCL patients,” the authors and their colleagues wrote in the study, which was published in the Journal of the American Academy of Dermatology.

They retrospectively analyzed data from the electronic medical records of 149 patients with CTCL who were being managed at one of nine international academic medical centers in seven countries from March to October 2020. Slightly more than half (56%) were male, 70% were White, 18% were Black, 52% had stage IA-IIA disease, and 19% acquired COVID-19 during the study period.

Of the 149 patients, 79 (53%) experienced a mean treatment delay of 3.2 months (range, 10 days to 10 months). After adjusting for age, race, biological sex, COVID-19 status, and disease stage, treatment delay was associated with a significant risk of disease relapse or progression across all stages (odds ratio, 5.00; P < .001). Specifically, for each additional month that a patient experienced treatment delay, the odds of disease progression increased by 37% (OR, 1.37; P < .001).

A total of 28 patients with CTCL (19%) were diagnosed with COVID-19, but none were acquired from outpatient office visits. Patients who contracted COVID-19 did not have a statistically significant increase in odds of disease progression, compared with COVID-negative patients (OR, 0.41; P = .07).

According to Dr. Geskin, who is also director of the Comprehensive Skin Cancer Center in the division of cutaneous oncology in the department of dermatology at Columbia, and Mr. Kwinta, no clinical trials exist to inform maintenance protocols in patients with cutaneous lymphomas. “There are also no randomized and controlled observational studies that demonstrate the impact that therapy delay may have on disease outcomes,” they said in the email. “In fact, the need for maintenance therapy for CTCL is often debated. Our findings demonstrate the importance of continuing treatment and the use of maintenance therapy in avoiding disease progression in these incurable lymphomas.”

They acknowledged certain limitations of the study, including its retrospective observational design. “Therefore, we cannot establish a definitive causal link between treatment delay and disease progression,” they said. “Our cohort of patients were on various and often multiple therapies, making it hard to extrapolate our data to discern which maintenance therapies were most effective in preventing disease progression.”

In addition, their data only includes patients from March to October 2020, “before the discovery of new variants and the development of COVID-19 vaccines,” they added. “Additional studies would be required to draw conclusions on how COVID-19 vaccines may affect patients with CTCL, including outcomes in the setting of new variants.”

The authors reported having no financial disclosures.

The early stages of the COVID-19 pandemic caused an average treatment delay of 3.2 months for 53% of patients with cutaneous T-cell lymphoma (CTCL), results from a retrospective study of nine international centers showed. However, among patients with CTCL diagnosed with COVID-19 during that time, no cases were acquired from outpatient visits.

“Delays in therapy for patients with cutaneous lymphomas should likely be avoided,” two of the study authors, Larisa J. Geskin, MD, of the department of dermatology at Columbia University Irving Medical Center, New York, and Bradley D. Kwinta, a medical student at Columbia University, told this news organization in a combined response via email.

“Continuing treatment and maintenance therapy appears critical to avoiding disease progression, highlighting the importance of maintenance therapy in CTCL,” they said. “These patients can be safely treated according to established treatment protocols while practicing physical distancing and using personal protective equipment without significantly increasing their risk of COVID-19 infection.”

The United States Cutaneous Lymphoma Consortium and the European Organization for Research and Treatment of Cancer developed emergency guidelines for the management of patients with cutaneous lymphomas during the pandemic to ensure patient safety, and the International Society for Cutaneous Lymphomas created an International Cutaneous Lymphomas Pandemic Section to collect data to assess the impact of these guidelines.

“Using this data, we can determine if these measures were effective in preventing COVID-19 infection, what the impact was of maintenance therapy, and how delays in treatment affected disease outcomes in CTCL patients,” the authors and their colleagues wrote in the study, which was published in the Journal of the American Academy of Dermatology.

They retrospectively analyzed data from the electronic medical records of 149 patients with CTCL who were being managed at one of nine international academic medical centers in seven countries from March to October 2020. Slightly more than half (56%) were male, 70% were White, 18% were Black, 52% had stage IA-IIA disease, and 19% acquired COVID-19 during the study period.

Of the 149 patients, 79 (53%) experienced a mean treatment delay of 3.2 months (range, 10 days to 10 months). After adjusting for age, race, biological sex, COVID-19 status, and disease stage, treatment delay was associated with a significant risk of disease relapse or progression across all stages (odds ratio, 5.00; P < .001). Specifically, for each additional month that a patient experienced treatment delay, the odds of disease progression increased by 37% (OR, 1.37; P < .001).

A total of 28 patients with CTCL (19%) were diagnosed with COVID-19, but none were acquired from outpatient office visits. Patients who contracted COVID-19 did not have a statistically significant increase in odds of disease progression, compared with COVID-negative patients (OR, 0.41; P = .07).

According to Dr. Geskin, who is also director of the Comprehensive Skin Cancer Center in the division of cutaneous oncology in the department of dermatology at Columbia, and Mr. Kwinta, no clinical trials exist to inform maintenance protocols in patients with cutaneous lymphomas. “There are also no randomized and controlled observational studies that demonstrate the impact that therapy delay may have on disease outcomes,” they said in the email. “In fact, the need for maintenance therapy for CTCL is often debated. Our findings demonstrate the importance of continuing treatment and the use of maintenance therapy in avoiding disease progression in these incurable lymphomas.”

They acknowledged certain limitations of the study, including its retrospective observational design. “Therefore, we cannot establish a definitive causal link between treatment delay and disease progression,” they said. “Our cohort of patients were on various and often multiple therapies, making it hard to extrapolate our data to discern which maintenance therapies were most effective in preventing disease progression.”

In addition, their data only includes patients from March to October 2020, “before the discovery of new variants and the development of COVID-19 vaccines,” they added. “Additional studies would be required to draw conclusions on how COVID-19 vaccines may affect patients with CTCL, including outcomes in the setting of new variants.”

The authors reported having no financial disclosures.

A drug used in the treatment of relapsed/refractory multiple myeloma (RRMM) is in the process of being pulled off the U.S. market by its manufacturer.

The drug is belantamab mafodotin-blmf (Blenrep), an antibody drug conjugate that targets B-cell maturation antigen (BCMA).

The manufacturer, GSK, announced that it has started the process of withdrawing this drug from the market at the request of the U.S. Food and Drug Administration (FDA).

This request follows disappointing results from a large confirmatory trial, known as DREAMM-3, in which the drug failed to meet the primary endpoint of showing an improvement in progression-free survival (PFS).

The company was obliged to carry out this confirmatory trial after the FDA granted an accelerated approval for the drug in August 2020.

The accelerated approval was based on response data, and it was dependent on later trials’ confirming a clinical benefit. In this case, those trials did not confirm a clinical benefit.

“We respect the Agency’s approach to the accelerated approval regulations and associated process,” commented the GSK Chief Medical Officer Sabine Luik.

The company will continue to “work with the U.S. FDA on a path forward for this important treatment option for patients with multiple myeloma.”

Further clinical trials in the DREAMM program are still underway. Results from the DREAMM-7 and DREAMM-8 trials are expected in early 2023.

The company had high hopes for the drug when it was launched. At that time, belanatamab mafodotin-blmf was the only drug on the market that targeted BCMA, and so it was the first drug in its class.

However, it is no longer unique. In the 2 years that it has been available, several other products that target BCMA have been launched for use in the treatment of multiple myeloma. These include the two chimeric antigen receptor T-cell products, idecabtagene vicleucel (Abecma) and ciltacabtagene autoleucel (Carvykti), as well as the bispecific antibody teclistamab (Tecvayli).
 

For relapsed/refractory disease

Belantamab mafodotin-blmf was approved for use in patients with RRMM who had already undergone treatment with one of the three major classes of drugs, namely, an immunomodulatory agent, a proteasome inhibitor, and a CD-38 monoclonal antibody.

Patients who are currently taking the drug and would like to continue doing so will have the option to enroll in a compassionate use program to retain their access to treatment, the company said.

“GSK continues to believe, based on the totality of data available from the DREAMM (DRiving Excellence in Approaches to Multiple Myeloma) development program, that the benefit-risk profile of belantamab mafodotin remains favorable in this hard-to-treat RRMM patient population. Patients responding to belantamab mafodotin experienced durable clinical benefit, and safety remains consistent with the known safety profile,” the company said.
 

Details of DREAMM-3 results

DREAMM-3 was a phase 3 trial that compared single-agent belantamab mafodotin to pomalidomide (Pomalyst) in combination with low-dose dexamethasone (PomDex) for patients with RRMM.

The results for the primary endpoint of PFS did not reach statistical significance: median PFS was 11.2 vs. 7 months with PomDex (hazard ratio, 1.03; 95% confidence interval, 0.72-1.47).

At the time of the primary analysis, the overall survival (OS) data had only achieved 37.5% overall maturity. The median OS was 21.2 vs. 21.1 months with PomDex (HR, 1.14; 95% CI, 0.77-1.68).

A version of this article first appeared on Medscape.com.

A drug used in the treatment of relapsed/refractory multiple myeloma (RRMM) is in the process of being pulled off the U.S. market by its manufacturer.

The drug is belantamab mafodotin-blmf (Blenrep), an antibody drug conjugate that targets B-cell maturation antigen (BCMA).

The manufacturer, GSK, announced that it has started the process of withdrawing this drug from the market at the request of the U.S. Food and Drug Administration (FDA).

This request follows disappointing results from a large confirmatory trial, known as DREAMM-3, in which the drug failed to meet the primary endpoint of showing an improvement in progression-free survival (PFS).

The company was obliged to carry out this confirmatory trial after the FDA granted an accelerated approval for the drug in August 2020.

The accelerated approval was based on response data, and it was dependent on later trials’ confirming a clinical benefit. In this case, those trials did not confirm a clinical benefit.

“We respect the Agency’s approach to the accelerated approval regulations and associated process,” commented the GSK Chief Medical Officer Sabine Luik.

The company will continue to “work with the U.S. FDA on a path forward for this important treatment option for patients with multiple myeloma.”

Further clinical trials in the DREAMM program are still underway. Results from the DREAMM-7 and DREAMM-8 trials are expected in early 2023.

The company had high hopes for the drug when it was launched. At that time, belanatamab mafodotin-blmf was the only drug on the market that targeted BCMA, and so it was the first drug in its class.

However, it is no longer unique. In the 2 years that it has been available, several other products that target BCMA have been launched for use in the treatment of multiple myeloma. These include the two chimeric antigen receptor T-cell products, idecabtagene vicleucel (Abecma) and ciltacabtagene autoleucel (Carvykti), as well as the bispecific antibody teclistamab (Tecvayli).
 

For relapsed/refractory disease

Belantamab mafodotin-blmf was approved for use in patients with RRMM who had already undergone treatment with one of the three major classes of drugs, namely, an immunomodulatory agent, a proteasome inhibitor, and a CD-38 monoclonal antibody.

Patients who are currently taking the drug and would like to continue doing so will have the option to enroll in a compassionate use program to retain their access to treatment, the company said.

“GSK continues to believe, based on the totality of data available from the DREAMM (DRiving Excellence in Approaches to Multiple Myeloma) development program, that the benefit-risk profile of belantamab mafodotin remains favorable in this hard-to-treat RRMM patient population. Patients responding to belantamab mafodotin experienced durable clinical benefit, and safety remains consistent with the known safety profile,” the company said.
 

Details of DREAMM-3 results

DREAMM-3 was a phase 3 trial that compared single-agent belantamab mafodotin to pomalidomide (Pomalyst) in combination with low-dose dexamethasone (PomDex) for patients with RRMM.

The results for the primary endpoint of PFS did not reach statistical significance: median PFS was 11.2 vs. 7 months with PomDex (hazard ratio, 1.03; 95% confidence interval, 0.72-1.47).

At the time of the primary analysis, the overall survival (OS) data had only achieved 37.5% overall maturity. The median OS was 21.2 vs. 21.1 months with PomDex (HR, 1.14; 95% CI, 0.77-1.68).

A version of this article first appeared on Medscape.com.

A drug used in the treatment of relapsed/refractory multiple myeloma (RRMM) is in the process of being pulled off the U.S. market by its manufacturer.

The drug is belantamab mafodotin-blmf (Blenrep), an antibody drug conjugate that targets B-cell maturation antigen (BCMA).

The manufacturer, GSK, announced that it has started the process of withdrawing this drug from the market at the request of the U.S. Food and Drug Administration (FDA).

This request follows disappointing results from a large confirmatory trial, known as DREAMM-3, in which the drug failed to meet the primary endpoint of showing an improvement in progression-free survival (PFS).

The company was obliged to carry out this confirmatory trial after the FDA granted an accelerated approval for the drug in August 2020.

The accelerated approval was based on response data, and it was dependent on later trials’ confirming a clinical benefit. In this case, those trials did not confirm a clinical benefit.

“We respect the Agency’s approach to the accelerated approval regulations and associated process,” commented the GSK Chief Medical Officer Sabine Luik.

The company will continue to “work with the U.S. FDA on a path forward for this important treatment option for patients with multiple myeloma.”

Further clinical trials in the DREAMM program are still underway. Results from the DREAMM-7 and DREAMM-8 trials are expected in early 2023.

The company had high hopes for the drug when it was launched. At that time, belanatamab mafodotin-blmf was the only drug on the market that targeted BCMA, and so it was the first drug in its class.

However, it is no longer unique. In the 2 years that it has been available, several other products that target BCMA have been launched for use in the treatment of multiple myeloma. These include the two chimeric antigen receptor T-cell products, idecabtagene vicleucel (Abecma) and ciltacabtagene autoleucel (Carvykti), as well as the bispecific antibody teclistamab (Tecvayli).
 

For relapsed/refractory disease

Belantamab mafodotin-blmf was approved for use in patients with RRMM who had already undergone treatment with one of the three major classes of drugs, namely, an immunomodulatory agent, a proteasome inhibitor, and a CD-38 monoclonal antibody.

Patients who are currently taking the drug and would like to continue doing so will have the option to enroll in a compassionate use program to retain their access to treatment, the company said.

“GSK continues to believe, based on the totality of data available from the DREAMM (DRiving Excellence in Approaches to Multiple Myeloma) development program, that the benefit-risk profile of belantamab mafodotin remains favorable in this hard-to-treat RRMM patient population. Patients responding to belantamab mafodotin experienced durable clinical benefit, and safety remains consistent with the known safety profile,” the company said.
 

Details of DREAMM-3 results

DREAMM-3 was a phase 3 trial that compared single-agent belantamab mafodotin to pomalidomide (Pomalyst) in combination with low-dose dexamethasone (PomDex) for patients with RRMM.

The results for the primary endpoint of PFS did not reach statistical significance: median PFS was 11.2 vs. 7 months with PomDex (hazard ratio, 1.03; 95% confidence interval, 0.72-1.47).

At the time of the primary analysis, the overall survival (OS) data had only achieved 37.5% overall maturity. The median OS was 21.2 vs. 21.1 months with PomDex (HR, 1.14; 95% CI, 0.77-1.68).

A version of this article first appeared on Medscape.com.

Patients undergoing chimeric antigen receptor (CAR) T-cell therapy who develop potentially serious neurotoxicity from the therapy show elevated plasma levels of neurofilament light chain (NfL) prior to the treatment, suggesting a possibly important predictor of risk for the side effect.

“This is the first study to show NfL levels are elevated even before CAR T treatment is given,” first author Omar H. Butt, MD, PhD, of the Siteman Cancer Center at Barnes-Jewish Hospital and Washington University in St. Louis, said in an interview.

“While unlikely to be the sole driver of [the neurotoxicity], neural injury reflected by NfL may aid in identifying a high-risk subset of patients undergoing cellular therapy,” the authors concluded in the study, published in JAMA Oncology.

CAR T-cell therapy has gained favor for virtually revolutionizing the treatment of some leukemias and lymphomas, however, as many as 40%-60% of patients develop the neurotoxicity side effect, called immune effector cell–associated neurotoxicity syndrome (ICANS), which, though usually low grade, in more severe cases can cause substantial morbidity and even mortality.

Hence, “the early identification of patients at risk for ICANS is critical for preemptive management,” the authors noted.

NfL, an established marker of neuroaxonal injury in neurodegenerative diseases including multiple sclerosis and Alzheimer’s disease, has been shown in previous studies to be elevated following the development of ICANS and up to 5 days prior to its peak symptoms.

To further evaluate NfL elevations in relation to ICANS, Dr. Butt and colleagues identified 30 patients undergoing CD19 CART-cell therapy, including 77% for diffuse large B-cell lymphoma, at two U.S. centers: Washington University in St. Louis and Case Western Reserve University, Cleveland.

The patients had a median age of 64 and were 40% female.

Among them, four developed low-grade ICANS grade 1-2, and 7 developed ICANS grade 3 or higher.

Of those developing any-grade ICANS, baseline elevations of NfL prior to the CAR T-cell treatment, were significantly higher, compared with those who did not develop ICANs (mean 87.6 pg/mL vs. 29.4 pg/mL, P < .001), with no significant differences between the low-grade (1 and 2) and higher-grade (3 or higher) ICANS groups.

A receiver operating characteristic analysis showed baseline NfL levels significantly predicted the development of ICANS with high accuracy (area under the ROC curve, 0.96), as well as sensitivity (AUROC, 0.91) and specificity (AUROC, 0.95).

Notably, baseline NfL levels were associated with ICANS severity, but did not correlate with other factors including demographic, oncologic history, nononcologic neurologic history, or history of exposure to neurotoxic therapies.

However, Dr. Butt added, “it is important to note that our study was insufficiently powered to examine those relationships in earnest. Therefore, [a correlation between NfL and those factors] remains possible,” he said.

The elevated NfL levels observed prior to the development of ICANS remained high across the study’s seven time points, up to day 30 post infusion.
 

Interest in NfL levels on the rise

NfL assessment is currently only clinically validated in amyotrophic lateral sclerosis, where it is used to assess neuroaxonal health and integrity. However, testing is available as interest and evidence of NfL’s potential role in other settings grows.

Meanwhile, Dr. Butt and associates are themselves developing an assay to predict the development of ICANS, which will likely include NfL, if the role is validated in further studies.

“Future studies will explore validating NfL for ICANS and additional indications,” he said.

ICANS symptoms can range from headaches and confusion to seizures or strokes in more severe cases.

The current gold standard for treatment includes early intervention with high-dose steroids and careful monitoring, but there is reluctance to use such therapies because of concerns about their blunting the anticancer effects of the CAR T cells.

Importantly, if validated, elevations in NfL could signal the need for more precautionary measures with CAR T-cell therapy, Dr. Butt noted.

“Our data suggests patients with high NfL levels at baseline would benefit most from perhaps closer monitoring with frequent checks and possible early intervention at the first sign of symptoms, a period of time when it may be hard to distinguish ICANS from other causes of confusion, such as delirium,” he explained.
 

Limitations: Validation, preventive measures needed

Commenting on the study, Sattva S. Neelapu, MD, a professor and deputy chair of the department of lymphoma and myeloma at the University of Texas MD Anderson Cancer Center, Houston, agreed that the findings have potentially important implications.

“I think this is a very intriguing and novel finding that needs to be investigated further prospectively in a larger cohort and across different CAR T products in patients with lymphoma, leukemia, and myeloma,” Dr. Neelapu said in an interview.

The NfL elevations observed even before CAR T-cell therapy among those who went on to develop ICANS are notable, he added.

“This is the surprising finding in the study,” Dr. Neelapu said. “It raises the question whether neurologic injury is caused by prior therapies that these patients received or whether it is an age-related phenomenon, as we do see higher incidence and severity of ICANS in older patients or some other mechanisms.”

A key caveat, however, is that even if a risk is identified, options to prevent ICANS are currently limited, Dr. Neelapu noted.

“I think it is too early to implement this into clinical practice,” he said. In addition to needing further validation, “assessing NfL levels would be useful when there is an effective prophylactic or therapeutic strategy – both of which also need to be investigated.”

Dr. Butt and colleagues are developing a clinical assay for ICANS and reported a provisional patent pending on the use of plasma NfL as a predictive biomarker for ICANS. The study received support from the Washington University in St. Louis, the Paula and Rodger O. Riney Fund, the Daniel J. Brennan MD Fund, the Fred Simmons and Olga Mohan Fund; the National Cancer Institute, the National Multiple Sclerosis Society, and the National Institute of Neurological Disorders and Stroke. Dr. Neelapu reported conflicts of interest with numerous pharmaceutical companies.

Patients undergoing chimeric antigen receptor (CAR) T-cell therapy who develop potentially serious neurotoxicity from the therapy show elevated plasma levels of neurofilament light chain (NfL) prior to the treatment, suggesting a possibly important predictor of risk for the side effect.

“This is the first study to show NfL levels are elevated even before CAR T treatment is given,” first author Omar H. Butt, MD, PhD, of the Siteman Cancer Center at Barnes-Jewish Hospital and Washington University in St. Louis, said in an interview.

“While unlikely to be the sole driver of [the neurotoxicity], neural injury reflected by NfL may aid in identifying a high-risk subset of patients undergoing cellular therapy,” the authors concluded in the study, published in JAMA Oncology.

CAR T-cell therapy has gained favor for virtually revolutionizing the treatment of some leukemias and lymphomas, however, as many as 40%-60% of patients develop the neurotoxicity side effect, called immune effector cell–associated neurotoxicity syndrome (ICANS), which, though usually low grade, in more severe cases can cause substantial morbidity and even mortality.

Hence, “the early identification of patients at risk for ICANS is critical for preemptive management,” the authors noted.

NfL, an established marker of neuroaxonal injury in neurodegenerative diseases including multiple sclerosis and Alzheimer’s disease, has been shown in previous studies to be elevated following the development of ICANS and up to 5 days prior to its peak symptoms.

To further evaluate NfL elevations in relation to ICANS, Dr. Butt and colleagues identified 30 patients undergoing CD19 CART-cell therapy, including 77% for diffuse large B-cell lymphoma, at two U.S. centers: Washington University in St. Louis and Case Western Reserve University, Cleveland.

The patients had a median age of 64 and were 40% female.

Among them, four developed low-grade ICANS grade 1-2, and 7 developed ICANS grade 3 or higher.

Of those developing any-grade ICANS, baseline elevations of NfL prior to the CAR T-cell treatment, were significantly higher, compared with those who did not develop ICANs (mean 87.6 pg/mL vs. 29.4 pg/mL, P < .001), with no significant differences between the low-grade (1 and 2) and higher-grade (3 or higher) ICANS groups.

A receiver operating characteristic analysis showed baseline NfL levels significantly predicted the development of ICANS with high accuracy (area under the ROC curve, 0.96), as well as sensitivity (AUROC, 0.91) and specificity (AUROC, 0.95).

Notably, baseline NfL levels were associated with ICANS severity, but did not correlate with other factors including demographic, oncologic history, nononcologic neurologic history, or history of exposure to neurotoxic therapies.

However, Dr. Butt added, “it is important to note that our study was insufficiently powered to examine those relationships in earnest. Therefore, [a correlation between NfL and those factors] remains possible,” he said.

The elevated NfL levels observed prior to the development of ICANS remained high across the study’s seven time points, up to day 30 post infusion.
 

Interest in NfL levels on the rise

NfL assessment is currently only clinically validated in amyotrophic lateral sclerosis, where it is used to assess neuroaxonal health and integrity. However, testing is available as interest and evidence of NfL’s potential role in other settings grows.

Meanwhile, Dr. Butt and associates are themselves developing an assay to predict the development of ICANS, which will likely include NfL, if the role is validated in further studies.

“Future studies will explore validating NfL for ICANS and additional indications,” he said.

ICANS symptoms can range from headaches and confusion to seizures or strokes in more severe cases.

The current gold standard for treatment includes early intervention with high-dose steroids and careful monitoring, but there is reluctance to use such therapies because of concerns about their blunting the anticancer effects of the CAR T cells.

Importantly, if validated, elevations in NfL could signal the need for more precautionary measures with CAR T-cell therapy, Dr. Butt noted.

“Our data suggests patients with high NfL levels at baseline would benefit most from perhaps closer monitoring with frequent checks and possible early intervention at the first sign of symptoms, a period of time when it may be hard to distinguish ICANS from other causes of confusion, such as delirium,” he explained.
 

Limitations: Validation, preventive measures needed

Commenting on the study, Sattva S. Neelapu, MD, a professor and deputy chair of the department of lymphoma and myeloma at the University of Texas MD Anderson Cancer Center, Houston, agreed that the findings have potentially important implications.

“I think this is a very intriguing and novel finding that needs to be investigated further prospectively in a larger cohort and across different CAR T products in patients with lymphoma, leukemia, and myeloma,” Dr. Neelapu said in an interview.

The NfL elevations observed even before CAR T-cell therapy among those who went on to develop ICANS are notable, he added.

“This is the surprising finding in the study,” Dr. Neelapu said. “It raises the question whether neurologic injury is caused by prior therapies that these patients received or whether it is an age-related phenomenon, as we do see higher incidence and severity of ICANS in older patients or some other mechanisms.”

A key caveat, however, is that even if a risk is identified, options to prevent ICANS are currently limited, Dr. Neelapu noted.

“I think it is too early to implement this into clinical practice,” he said. In addition to needing further validation, “assessing NfL levels would be useful when there is an effective prophylactic or therapeutic strategy – both of which also need to be investigated.”

Dr. Butt and colleagues are developing a clinical assay for ICANS and reported a provisional patent pending on the use of plasma NfL as a predictive biomarker for ICANS. The study received support from the Washington University in St. Louis, the Paula and Rodger O. Riney Fund, the Daniel J. Brennan MD Fund, the Fred Simmons and Olga Mohan Fund; the National Cancer Institute, the National Multiple Sclerosis Society, and the National Institute of Neurological Disorders and Stroke. Dr. Neelapu reported conflicts of interest with numerous pharmaceutical companies.

Patients undergoing chimeric antigen receptor (CAR) T-cell therapy who develop potentially serious neurotoxicity from the therapy show elevated plasma levels of neurofilament light chain (NfL) prior to the treatment, suggesting a possibly important predictor of risk for the side effect.

“This is the first study to show NfL levels are elevated even before CAR T treatment is given,” first author Omar H. Butt, MD, PhD, of the Siteman Cancer Center at Barnes-Jewish Hospital and Washington University in St. Louis, said in an interview.

“While unlikely to be the sole driver of [the neurotoxicity], neural injury reflected by NfL may aid in identifying a high-risk subset of patients undergoing cellular therapy,” the authors concluded in the study, published in JAMA Oncology.

CAR T-cell therapy has gained favor for virtually revolutionizing the treatment of some leukemias and lymphomas, however, as many as 40%-60% of patients develop the neurotoxicity side effect, called immune effector cell–associated neurotoxicity syndrome (ICANS), which, though usually low grade, in more severe cases can cause substantial morbidity and even mortality.

Hence, “the early identification of patients at risk for ICANS is critical for preemptive management,” the authors noted.

NfL, an established marker of neuroaxonal injury in neurodegenerative diseases including multiple sclerosis and Alzheimer’s disease, has been shown in previous studies to be elevated following the development of ICANS and up to 5 days prior to its peak symptoms.

To further evaluate NfL elevations in relation to ICANS, Dr. Butt and colleagues identified 30 patients undergoing CD19 CART-cell therapy, including 77% for diffuse large B-cell lymphoma, at two U.S. centers: Washington University in St. Louis and Case Western Reserve University, Cleveland.

The patients had a median age of 64 and were 40% female.

Among them, four developed low-grade ICANS grade 1-2, and 7 developed ICANS grade 3 or higher.

Of those developing any-grade ICANS, baseline elevations of NfL prior to the CAR T-cell treatment, were significantly higher, compared with those who did not develop ICANs (mean 87.6 pg/mL vs. 29.4 pg/mL, P < .001), with no significant differences between the low-grade (1 and 2) and higher-grade (3 or higher) ICANS groups.

A receiver operating characteristic analysis showed baseline NfL levels significantly predicted the development of ICANS with high accuracy (area under the ROC curve, 0.96), as well as sensitivity (AUROC, 0.91) and specificity (AUROC, 0.95).

Notably, baseline NfL levels were associated with ICANS severity, but did not correlate with other factors including demographic, oncologic history, nononcologic neurologic history, or history of exposure to neurotoxic therapies.

However, Dr. Butt added, “it is important to note that our study was insufficiently powered to examine those relationships in earnest. Therefore, [a correlation between NfL and those factors] remains possible,” he said.

The elevated NfL levels observed prior to the development of ICANS remained high across the study’s seven time points, up to day 30 post infusion.
 

Interest in NfL levels on the rise

NfL assessment is currently only clinically validated in amyotrophic lateral sclerosis, where it is used to assess neuroaxonal health and integrity. However, testing is available as interest and evidence of NfL’s potential role in other settings grows.

Meanwhile, Dr. Butt and associates are themselves developing an assay to predict the development of ICANS, which will likely include NfL, if the role is validated in further studies.

“Future studies will explore validating NfL for ICANS and additional indications,” he said.

ICANS symptoms can range from headaches and confusion to seizures or strokes in more severe cases.

The current gold standard for treatment includes early intervention with high-dose steroids and careful monitoring, but there is reluctance to use such therapies because of concerns about their blunting the anticancer effects of the CAR T cells.

Importantly, if validated, elevations in NfL could signal the need for more precautionary measures with CAR T-cell therapy, Dr. Butt noted.

“Our data suggests patients with high NfL levels at baseline would benefit most from perhaps closer monitoring with frequent checks and possible early intervention at the first sign of symptoms, a period of time when it may be hard to distinguish ICANS from other causes of confusion, such as delirium,” he explained.
 

Limitations: Validation, preventive measures needed

Commenting on the study, Sattva S. Neelapu, MD, a professor and deputy chair of the department of lymphoma and myeloma at the University of Texas MD Anderson Cancer Center, Houston, agreed that the findings have potentially important implications.

“I think this is a very intriguing and novel finding that needs to be investigated further prospectively in a larger cohort and across different CAR T products in patients with lymphoma, leukemia, and myeloma,” Dr. Neelapu said in an interview.

The NfL elevations observed even before CAR T-cell therapy among those who went on to develop ICANS are notable, he added.

“This is the surprising finding in the study,” Dr. Neelapu said. “It raises the question whether neurologic injury is caused by prior therapies that these patients received or whether it is an age-related phenomenon, as we do see higher incidence and severity of ICANS in older patients or some other mechanisms.”

A key caveat, however, is that even if a risk is identified, options to prevent ICANS are currently limited, Dr. Neelapu noted.

“I think it is too early to implement this into clinical practice,” he said. In addition to needing further validation, “assessing NfL levels would be useful when there is an effective prophylactic or therapeutic strategy – both of which also need to be investigated.”

Dr. Butt and colleagues are developing a clinical assay for ICANS and reported a provisional patent pending on the use of plasma NfL as a predictive biomarker for ICANS. The study received support from the Washington University in St. Louis, the Paula and Rodger O. Riney Fund, the Daniel J. Brennan MD Fund, the Fred Simmons and Olga Mohan Fund; the National Cancer Institute, the National Multiple Sclerosis Society, and the National Institute of Neurological Disorders and Stroke. Dr. Neelapu reported conflicts of interest with numerous pharmaceutical companies.

Adding venetoclax (Venclexta) to a gilteritinib (Xospata) regimen appeared to improve outcomes in refractory/relapsed FLT3-mutated acute myeloid leukemia (AML), a new industry-funded phase 1b study reported.

“The combination of venetoclax and gilteritinib is a highly active and tolerable oral combination regimen that potentially improves response frequency and depth over existing standards in a high-risk, mutation-defined group of patients with AML,” wrote the authors of the study, which appeared in the Journal of Clinical Oncology.

Outcomes in AML are poor. As the study notes, most patients relapse and face a median overall survival of 4-7 months even with standard chemotherapy. Gilteritinib, a selective oral FLT3 inhibitor, is Food and Drug Administration–approved for the 30% of relapsed/refractory patients with AML who have FLT3 mutations.

“The general sentiment is that, although some patients have great benefit from gilteritinib monotherapy, there is room to improve the quality, frequency, and duration of responses with combinations,” said hematologist Andrew Brunner, MD, of Massachusetts General Hospital in Boston, in an interview. He was not involved with the study research.

For the new open-label, dose-escalation/dose-expansion study, led by hematologist Naval Daver, MD, of the University of Texas MD Anderson Cancer Center, Houston, researchers enrolled 61 patients (56 with FLT3 mutations) from 2018 to 2020. The median age was 63 years (range 21-85).

The subjects were assigned to get a recommended phase 2 dose of 400 mg venetoclax once daily and 120 mg gilteritinib once daily.

Over a median follow-up of 17.5 months, the median remission time was 4.9 months (95% confidence interval, 3.4-6.6), and the patients with FLT3 mutations survived a median of 10 months.

“The combination of venetoclax and gilteritinib was tolerable at standard doses of each drug, generated remarkably high response rates, and markedly reduced FLT3-internal tandem duplications mutation burden. … Early mortality was similar to gilteritinib monotherapy,” the authors wrote.

Eighty percent of patients experienced cytopenias, and “adverse events prompted venetoclax and gilteritinib dose interruptions in 51% and 48%, respectively.”

About 60% of patients who went on to receive allogeneic hematopoietic stem cell transplantation were alive at the end of follow-up, “suggesting that VenGilt [the combo treatment] could be an effective bridge to transplant in young/fit patients with relapsed FLT3mut AML,” the researchers wrote.

All patients withdrew from the study by November 2021 for several reasons such as death (n=42), adverse events (n=10), and disease progression (29); some had multiple reasons.

Dr. Brunner said the study is “an important step toward evaluating a new potential regimen.”

The remission duration, FLT3 molecular response, and median overall survival “seem quite encouraging for a severe disease like AML in relapse,” he said. However, he added that the drug combo “would need to be evaluated in a randomized and, ideally, placebo-controlled setting to know if this is a significant improvement.”

He also highlighted the high number of severe cyptopenias with associated complications such as death. “Whether this is acceptable depends on the patient and circumstances,” he said. “But it does suggest that this regimen would potentially be for more robust patients, particularly since the group that did best were those who went to transplant later.”

Pending more research, Dr. Brunner said, “I am not sure I would use [the combination treatment] over gilteritinib monotherapy, for instance. But there may be settings where no other options are available, and this could be considered, particularly if a transplant option is a next step.”

The study was funded by AbbVie, Genentech, and Astellas. The study authors report multiple disclosures; some are employed by Astellas, AbbVie, and Genentech/Roche.

Dr. Bronner reports running clinical trials, advisory board service and/or consultation for Acceleron, Agios, Abbvie, BMS/Celgene, Keros Therapeutics, Novartis, Takeda, GSK, AstraZeneca, Janssen, and Gilead.

Adding venetoclax (Venclexta) to a gilteritinib (Xospata) regimen appeared to improve outcomes in refractory/relapsed FLT3-mutated acute myeloid leukemia (AML), a new industry-funded phase 1b study reported.

“The combination of venetoclax and gilteritinib is a highly active and tolerable oral combination regimen that potentially improves response frequency and depth over existing standards in a high-risk, mutation-defined group of patients with AML,” wrote the authors of the study, which appeared in the Journal of Clinical Oncology.

Outcomes in AML are poor. As the study notes, most patients relapse and face a median overall survival of 4-7 months even with standard chemotherapy. Gilteritinib, a selective oral FLT3 inhibitor, is Food and Drug Administration–approved for the 30% of relapsed/refractory patients with AML who have FLT3 mutations.

“The general sentiment is that, although some patients have great benefit from gilteritinib monotherapy, there is room to improve the quality, frequency, and duration of responses with combinations,” said hematologist Andrew Brunner, MD, of Massachusetts General Hospital in Boston, in an interview. He was not involved with the study research.

For the new open-label, dose-escalation/dose-expansion study, led by hematologist Naval Daver, MD, of the University of Texas MD Anderson Cancer Center, Houston, researchers enrolled 61 patients (56 with FLT3 mutations) from 2018 to 2020. The median age was 63 years (range 21-85).

The subjects were assigned to get a recommended phase 2 dose of 400 mg venetoclax once daily and 120 mg gilteritinib once daily.

Over a median follow-up of 17.5 months, the median remission time was 4.9 months (95% confidence interval, 3.4-6.6), and the patients with FLT3 mutations survived a median of 10 months.

“The combination of venetoclax and gilteritinib was tolerable at standard doses of each drug, generated remarkably high response rates, and markedly reduced FLT3-internal tandem duplications mutation burden. … Early mortality was similar to gilteritinib monotherapy,” the authors wrote.

Eighty percent of patients experienced cytopenias, and “adverse events prompted venetoclax and gilteritinib dose interruptions in 51% and 48%, respectively.”

About 60% of patients who went on to receive allogeneic hematopoietic stem cell transplantation were alive at the end of follow-up, “suggesting that VenGilt [the combo treatment] could be an effective bridge to transplant in young/fit patients with relapsed FLT3mut AML,” the researchers wrote.

All patients withdrew from the study by November 2021 for several reasons such as death (n=42), adverse events (n=10), and disease progression (29); some had multiple reasons.

Dr. Brunner said the study is “an important step toward evaluating a new potential regimen.”

The remission duration, FLT3 molecular response, and median overall survival “seem quite encouraging for a severe disease like AML in relapse,” he said. However, he added that the drug combo “would need to be evaluated in a randomized and, ideally, placebo-controlled setting to know if this is a significant improvement.”

He also highlighted the high number of severe cyptopenias with associated complications such as death. “Whether this is acceptable depends on the patient and circumstances,” he said. “But it does suggest that this regimen would potentially be for more robust patients, particularly since the group that did best were those who went to transplant later.”

Pending more research, Dr. Brunner said, “I am not sure I would use [the combination treatment] over gilteritinib monotherapy, for instance. But there may be settings where no other options are available, and this could be considered, particularly if a transplant option is a next step.”

The study was funded by AbbVie, Genentech, and Astellas. The study authors report multiple disclosures; some are employed by Astellas, AbbVie, and Genentech/Roche.

Dr. Bronner reports running clinical trials, advisory board service and/or consultation for Acceleron, Agios, Abbvie, BMS/Celgene, Keros Therapeutics, Novartis, Takeda, GSK, AstraZeneca, Janssen, and Gilead.

Adding venetoclax (Venclexta) to a gilteritinib (Xospata) regimen appeared to improve outcomes in refractory/relapsed FLT3-mutated acute myeloid leukemia (AML), a new industry-funded phase 1b study reported.

“The combination of venetoclax and gilteritinib is a highly active and tolerable oral combination regimen that potentially improves response frequency and depth over existing standards in a high-risk, mutation-defined group of patients with AML,” wrote the authors of the study, which appeared in the Journal of Clinical Oncology.

Outcomes in AML are poor. As the study notes, most patients relapse and face a median overall survival of 4-7 months even with standard chemotherapy. Gilteritinib, a selective oral FLT3 inhibitor, is Food and Drug Administration–approved for the 30% of relapsed/refractory patients with AML who have FLT3 mutations.

“The general sentiment is that, although some patients have great benefit from gilteritinib monotherapy, there is room to improve the quality, frequency, and duration of responses with combinations,” said hematologist Andrew Brunner, MD, of Massachusetts General Hospital in Boston, in an interview. He was not involved with the study research.

For the new open-label, dose-escalation/dose-expansion study, led by hematologist Naval Daver, MD, of the University of Texas MD Anderson Cancer Center, Houston, researchers enrolled 61 patients (56 with FLT3 mutations) from 2018 to 2020. The median age was 63 years (range 21-85).

The subjects were assigned to get a recommended phase 2 dose of 400 mg venetoclax once daily and 120 mg gilteritinib once daily.

Over a median follow-up of 17.5 months, the median remission time was 4.9 months (95% confidence interval, 3.4-6.6), and the patients with FLT3 mutations survived a median of 10 months.

“The combination of venetoclax and gilteritinib was tolerable at standard doses of each drug, generated remarkably high response rates, and markedly reduced FLT3-internal tandem duplications mutation burden. … Early mortality was similar to gilteritinib monotherapy,” the authors wrote.

Eighty percent of patients experienced cytopenias, and “adverse events prompted venetoclax and gilteritinib dose interruptions in 51% and 48%, respectively.”

About 60% of patients who went on to receive allogeneic hematopoietic stem cell transplantation were alive at the end of follow-up, “suggesting that VenGilt [the combo treatment] could be an effective bridge to transplant in young/fit patients with relapsed FLT3mut AML,” the researchers wrote.

All patients withdrew from the study by November 2021 for several reasons such as death (n=42), adverse events (n=10), and disease progression (29); some had multiple reasons.

Dr. Brunner said the study is “an important step toward evaluating a new potential regimen.”

The remission duration, FLT3 molecular response, and median overall survival “seem quite encouraging for a severe disease like AML in relapse,” he said. However, he added that the drug combo “would need to be evaluated in a randomized and, ideally, placebo-controlled setting to know if this is a significant improvement.”

He also highlighted the high number of severe cyptopenias with associated complications such as death. “Whether this is acceptable depends on the patient and circumstances,” he said. “But it does suggest that this regimen would potentially be for more robust patients, particularly since the group that did best were those who went to transplant later.”

Pending more research, Dr. Brunner said, “I am not sure I would use [the combination treatment] over gilteritinib monotherapy, for instance. But there may be settings where no other options are available, and this could be considered, particularly if a transplant option is a next step.”

The study was funded by AbbVie, Genentech, and Astellas. The study authors report multiple disclosures; some are employed by Astellas, AbbVie, and Genentech/Roche.

Dr. Bronner reports running clinical trials, advisory board service and/or consultation for Acceleron, Agios, Abbvie, BMS/Celgene, Keros Therapeutics, Novartis, Takeda, GSK, AstraZeneca, Janssen, and Gilead.

Background

Diffuse large B-cell lymphoma (DLBCL) is the most common aggressive type of non- Hodgkin lymphoma (NHL), comprising 30% of all NHL. Due to a decreased state of immunosurveillance resulting from the disease itself and its associated therapies, patients are at increased risk of developing a secondary malignancy. Multiple primary malignancies have been reported to occur in up to 15% of patients with DLBCL, retrospectively.

Herein, we review a case of a man with DLBCL who concomitantly developed ALK negative anaplastic large cell lymphoma (ALCL) distinctly of T-cell lineage who was successfully treated with palliative therapy for both diagnoses despite his advanced age and diagnosis associated with a poor prognosis with continued effect and sustained quality of life.

Case Report

An 88-year-old man presented with stage III DLBCL, diagnosed in 12/2018, was deemed not to be an aggressive therapy candidate. As such, he was treated with Rituximab monotherapy for 6 cycles, ending in 02/2019, with remarkably good effect. He remained in a PR with stable disease on serial PET/CTs until 09/2021, at which time he was noted to have Horner’s Syndrome in clinic. CT chest demonstrated a right apical lung mass, not previously seen on prior scans measuring 4.2 x 2.7 cm. Other sites of nodal disease remained stable on PET/CT.

Biopsy of the lesion revealed CD30+ ALK-negative ALCL with distinct T-cell marker positivity on immunohistochemistry and the absence of B-cell lineage markers. After discussion at our treatment planning conference, we decided to treat with brentuximab-vedotin (Bv) monotherapy for 6 cycles. End of treatment PET/CT demonstrated a PR with near resolution in background PET avidity at the lesion. His symptoms of Horner syndrome also improved.

Conclusion

A diagnosis of aggressive lymphoma increases the risk of developing a secondary malignancy and providers should remain vigilant of this. Elderly individuals in whom aggressive therapies may be precluded can still greatly benefit from palliative targeted therapy even in the setting of diseases historically associated with a poor prognosis.

Background

Diffuse large B-cell lymphoma (DLBCL) is the most common aggressive type of non- Hodgkin lymphoma (NHL), comprising 30% of all NHL. Due to a decreased state of immunosurveillance resulting from the disease itself and its associated therapies, patients are at increased risk of developing a secondary malignancy. Multiple primary malignancies have been reported to occur in up to 15% of patients with DLBCL, retrospectively.

Herein, we review a case of a man with DLBCL who concomitantly developed ALK negative anaplastic large cell lymphoma (ALCL) distinctly of T-cell lineage who was successfully treated with palliative therapy for both diagnoses despite his advanced age and diagnosis associated with a poor prognosis with continued effect and sustained quality of life.

Case Report

An 88-year-old man presented with stage III DLBCL, diagnosed in 12/2018, was deemed not to be an aggressive therapy candidate. As such, he was treated with Rituximab monotherapy for 6 cycles, ending in 02/2019, with remarkably good effect. He remained in a PR with stable disease on serial PET/CTs until 09/2021, at which time he was noted to have Horner’s Syndrome in clinic. CT chest demonstrated a right apical lung mass, not previously seen on prior scans measuring 4.2 x 2.7 cm. Other sites of nodal disease remained stable on PET/CT.

Biopsy of the lesion revealed CD30+ ALK-negative ALCL with distinct T-cell marker positivity on immunohistochemistry and the absence of B-cell lineage markers. After discussion at our treatment planning conference, we decided to treat with brentuximab-vedotin (Bv) monotherapy for 6 cycles. End of treatment PET/CT demonstrated a PR with near resolution in background PET avidity at the lesion. His symptoms of Horner syndrome also improved.

Conclusion

A diagnosis of aggressive lymphoma increases the risk of developing a secondary malignancy and providers should remain vigilant of this. Elderly individuals in whom aggressive therapies may be precluded can still greatly benefit from palliative targeted therapy even in the setting of diseases historically associated with a poor prognosis.

Background

Diffuse large B-cell lymphoma (DLBCL) is the most common aggressive type of non- Hodgkin lymphoma (NHL), comprising 30% of all NHL. Due to a decreased state of immunosurveillance resulting from the disease itself and its associated therapies, patients are at increased risk of developing a secondary malignancy. Multiple primary malignancies have been reported to occur in up to 15% of patients with DLBCL, retrospectively.

Herein, we review a case of a man with DLBCL who concomitantly developed ALK negative anaplastic large cell lymphoma (ALCL) distinctly of T-cell lineage who was successfully treated with palliative therapy for both diagnoses despite his advanced age and diagnosis associated with a poor prognosis with continued effect and sustained quality of life.

Case Report

An 88-year-old man presented with stage III DLBCL, diagnosed in 12/2018, was deemed not to be an aggressive therapy candidate. As such, he was treated with Rituximab monotherapy for 6 cycles, ending in 02/2019, with remarkably good effect. He remained in a PR with stable disease on serial PET/CTs until 09/2021, at which time he was noted to have Horner’s Syndrome in clinic. CT chest demonstrated a right apical lung mass, not previously seen on prior scans measuring 4.2 x 2.7 cm. Other sites of nodal disease remained stable on PET/CT.

Biopsy of the lesion revealed CD30+ ALK-negative ALCL with distinct T-cell marker positivity on immunohistochemistry and the absence of B-cell lineage markers. After discussion at our treatment planning conference, we decided to treat with brentuximab-vedotin (Bv) monotherapy for 6 cycles. End of treatment PET/CT demonstrated a PR with near resolution in background PET avidity at the lesion. His symptoms of Horner syndrome also improved.

Conclusion

A diagnosis of aggressive lymphoma increases the risk of developing a secondary malignancy and providers should remain vigilant of this. Elderly individuals in whom aggressive therapies may be precluded can still greatly benefit from palliative targeted therapy even in the setting of diseases historically associated with a poor prognosis.

Background

Patients undergoing allogeneic hematopoietic stem cell transplant (HSCT) are high-risk patients with complex medication regimens, including anti-rejection medications, infection prophylaxis, other post-transplant complication prophylaxis in addition to their chronic medications for co-morbid conditions. At the VA Tennessee Valley Healthcare System (TVHS), there are 3 stages of care once a patient receives an allogeneic transplant: inpatient transplant (through engraftment), outpatient posttransplant (through day +100), and long-term care (LTC) transplant (post-departure from the transplant facility). Currently, TVHS has 2 Clinical Pharmacist Practitioners (CPP) involved in the inpatient and outpatient settings. The purpose of this quality improvement initiative was to evaluate the impact of pharmacist services on continuity of care for longterm HSCT patients, vaccine completion rates, and immunosuppression/chemotherapy monitoring.

Methods

Patients were identified for enrollment based on a referral from a CPP, nurse practitioner (NP), or physician (MD). Patients with a history of allogeneic transplant were automatically referred from the CPP at departure and scheduled for a 2-week and 6-week post-departure visit. During these visits, the pharmacist conducted a medication reconciliation, assessed for medication errors or lapses in therapy, and provided medication counseling deemed necessary by clinical judgement. In addition to these 2 medication reconciliation visits, patients were also automatically scheduled for a vaccine assessment 6-months post-transplant. Pharmacy interventions from these visits were recorded in pre-specified categories. In addition to these predetermined visits, patients with complex medication regimens or undergoing significant changes could also be referred by either the NP or MD.

Results

A total of 18 patients were enrolled in the CPP clinic from October 2021 through May 2022. During this period, 42 visits were completed as each patient was seen multiple times (mean number of visits 1.8). A total of 16 medication errors/lapses were identified and addressed. The most common types of interventions included medication reconciliation (42), adherence counseling (39), general medication interventions (26), and vaccine interventions (20).

Conclusions

This pharmacist-driven telemedicine service incorporated into the long-term care HSCT clinic demonstrated benefit in identifying and addressing medication errors/lapses. Further study including the impact on patient outcomes such as hospital readmissions post-transplant, could strengthen the importance of pharmacy involvement in this setting.

Background

Patients undergoing allogeneic hematopoietic stem cell transplant (HSCT) are high-risk patients with complex medication regimens, including anti-rejection medications, infection prophylaxis, other post-transplant complication prophylaxis in addition to their chronic medications for co-morbid conditions. At the VA Tennessee Valley Healthcare System (TVHS), there are 3 stages of care once a patient receives an allogeneic transplant: inpatient transplant (through engraftment), outpatient posttransplant (through day +100), and long-term care (LTC) transplant (post-departure from the transplant facility). Currently, TVHS has 2 Clinical Pharmacist Practitioners (CPP) involved in the inpatient and outpatient settings. The purpose of this quality improvement initiative was to evaluate the impact of pharmacist services on continuity of care for longterm HSCT patients, vaccine completion rates, and immunosuppression/chemotherapy monitoring.

Methods

Patients were identified for enrollment based on a referral from a CPP, nurse practitioner (NP), or physician (MD). Patients with a history of allogeneic transplant were automatically referred from the CPP at departure and scheduled for a 2-week and 6-week post-departure visit. During these visits, the pharmacist conducted a medication reconciliation, assessed for medication errors or lapses in therapy, and provided medication counseling deemed necessary by clinical judgement. In addition to these 2 medication reconciliation visits, patients were also automatically scheduled for a vaccine assessment 6-months post-transplant. Pharmacy interventions from these visits were recorded in pre-specified categories. In addition to these predetermined visits, patients with complex medication regimens or undergoing significant changes could also be referred by either the NP or MD.

Results

A total of 18 patients were enrolled in the CPP clinic from October 2021 through May 2022. During this period, 42 visits were completed as each patient was seen multiple times (mean number of visits 1.8). A total of 16 medication errors/lapses were identified and addressed. The most common types of interventions included medication reconciliation (42), adherence counseling (39), general medication interventions (26), and vaccine interventions (20).

Conclusions

This pharmacist-driven telemedicine service incorporated into the long-term care HSCT clinic demonstrated benefit in identifying and addressing medication errors/lapses. Further study including the impact on patient outcomes such as hospital readmissions post-transplant, could strengthen the importance of pharmacy involvement in this setting.

Background

Patients undergoing allogeneic hematopoietic stem cell transplant (HSCT) are high-risk patients with complex medication regimens, including anti-rejection medications, infection prophylaxis, other post-transplant complication prophylaxis in addition to their chronic medications for co-morbid conditions. At the VA Tennessee Valley Healthcare System (TVHS), there are 3 stages of care once a patient receives an allogeneic transplant: inpatient transplant (through engraftment), outpatient posttransplant (through day +100), and long-term care (LTC) transplant (post-departure from the transplant facility). Currently, TVHS has 2 Clinical Pharmacist Practitioners (CPP) involved in the inpatient and outpatient settings. The purpose of this quality improvement initiative was to evaluate the impact of pharmacist services on continuity of care for longterm HSCT patients, vaccine completion rates, and immunosuppression/chemotherapy monitoring.

Methods

Patients were identified for enrollment based on a referral from a CPP, nurse practitioner (NP), or physician (MD). Patients with a history of allogeneic transplant were automatically referred from the CPP at departure and scheduled for a 2-week and 6-week post-departure visit. During these visits, the pharmacist conducted a medication reconciliation, assessed for medication errors or lapses in therapy, and provided medication counseling deemed necessary by clinical judgement. In addition to these 2 medication reconciliation visits, patients were also automatically scheduled for a vaccine assessment 6-months post-transplant. Pharmacy interventions from these visits were recorded in pre-specified categories. In addition to these predetermined visits, patients with complex medication regimens or undergoing significant changes could also be referred by either the NP or MD.

Results

A total of 18 patients were enrolled in the CPP clinic from October 2021 through May 2022. During this period, 42 visits were completed as each patient was seen multiple times (mean number of visits 1.8). A total of 16 medication errors/lapses were identified and addressed. The most common types of interventions included medication reconciliation (42), adherence counseling (39), general medication interventions (26), and vaccine interventions (20).

Conclusions

This pharmacist-driven telemedicine service incorporated into the long-term care HSCT clinic demonstrated benefit in identifying and addressing medication errors/lapses. Further study including the impact on patient outcomes such as hospital readmissions post-transplant, could strengthen the importance of pharmacy involvement in this setting.

Introduction

Febrile neutropenia (FN) is one of the most concerning complications associated with chemotherapy treatment, often leading to hospitalizations and delays in chemotherapy. The NCCN Guideline recommends primary prophylaxis with G-CSFs for patients receiving chemotherapy regimens that have an intermediate risk for FN if the patients have risk factors. A common intermediate risk for FN regimen is CHOP plus an anti-CD20 monoclonal antibody (mAb) for the treatment of non-Hodgkin’s lymphoma (NHL). At VASDHCS, an evaluation of the appropriate use of prophylactic GCSFs in this risk group would allow better optimization of patient care.

Objective

To evaluate the incidence of FN in correlation with the appropriate use of G-CSFs in patients who received CHOP plus an anti-CD20 mAb for the treatment of NHL

Methods

This is a retrospective study at VA San Diego of adult veterans with a confirmed diagnosis of NHL who received the first cycle of CHOP plus an anti- CD20 mAb between January 1, 2006, to October 1, 2021. Patients were categorized based on whether they received prophylactic G-CSF during the first cycle. The primary outcome measured was the incidence of FN in veterans with risk factor(s) who received CHOP plus an anti-CD20 mAb. The secondary outcome was the percentage of patients with risk factors who received G-CSF regardless of FN incidence. Primary outcome was analyzed using 2-tailed Fisher exact test.

Results

57 patients were included in the final analysis. In patients with at least one risk factor for FN, 26 (60%) received prophylactic G-CSF and 17 (40%) did not. There is 1 case of FN in the group that received G-CSF and 2 cases of FN in the group without G-CSF (RR, 0.33; P = .55; 95% CI, 0.03-3.33).

Conculsions

In patients receiving treatment for NHL with CHOP plus an anti-CD20 mAb, most of the patients with at least 1 risk factor for FN were initiated on G-CSF. Based on the results of the study, our veteran population does not appear to have an increased risk for FN without G-CSF. A larger study is warranted to further evaluate the significance of FN in correlation with prophylactic G-CSF.

Introduction

Febrile neutropenia (FN) is one of the most concerning complications associated with chemotherapy treatment, often leading to hospitalizations and delays in chemotherapy. The NCCN Guideline recommends primary prophylaxis with G-CSFs for patients receiving chemotherapy regimens that have an intermediate risk for FN if the patients have risk factors. A common intermediate risk for FN regimen is CHOP plus an anti-CD20 monoclonal antibody (mAb) for the treatment of non-Hodgkin’s lymphoma (NHL). At VASDHCS, an evaluation of the appropriate use of prophylactic GCSFs in this risk group would allow better optimization of patient care.

Objective

To evaluate the incidence of FN in correlation with the appropriate use of G-CSFs in patients who received CHOP plus an anti-CD20 mAb for the treatment of NHL

Methods

This is a retrospective study at VA San Diego of adult veterans with a confirmed diagnosis of NHL who received the first cycle of CHOP plus an anti- CD20 mAb between January 1, 2006, to October 1, 2021. Patients were categorized based on whether they received prophylactic G-CSF during the first cycle. The primary outcome measured was the incidence of FN in veterans with risk factor(s) who received CHOP plus an anti-CD20 mAb. The secondary outcome was the percentage of patients with risk factors who received G-CSF regardless of FN incidence. Primary outcome was analyzed using 2-tailed Fisher exact test.

Results

57 patients were included in the final analysis. In patients with at least one risk factor for FN, 26 (60%) received prophylactic G-CSF and 17 (40%) did not. There is 1 case of FN in the group that received G-CSF and 2 cases of FN in the group without G-CSF (RR, 0.33; P = .55; 95% CI, 0.03-3.33).

Conculsions

In patients receiving treatment for NHL with CHOP plus an anti-CD20 mAb, most of the patients with at least 1 risk factor for FN were initiated on G-CSF. Based on the results of the study, our veteran population does not appear to have an increased risk for FN without G-CSF. A larger study is warranted to further evaluate the significance of FN in correlation with prophylactic G-CSF.

Introduction

Febrile neutropenia (FN) is one of the most concerning complications associated with chemotherapy treatment, often leading to hospitalizations and delays in chemotherapy. The NCCN Guideline recommends primary prophylaxis with G-CSFs for patients receiving chemotherapy regimens that have an intermediate risk for FN if the patients have risk factors. A common intermediate risk for FN regimen is CHOP plus an anti-CD20 monoclonal antibody (mAb) for the treatment of non-Hodgkin’s lymphoma (NHL). At VASDHCS, an evaluation of the appropriate use of prophylactic GCSFs in this risk group would allow better optimization of patient care.

Objective

To evaluate the incidence of FN in correlation with the appropriate use of G-CSFs in patients who received CHOP plus an anti-CD20 mAb for the treatment of NHL

Methods

This is a retrospective study at VA San Diego of adult veterans with a confirmed diagnosis of NHL who received the first cycle of CHOP plus an anti- CD20 mAb between January 1, 2006, to October 1, 2021. Patients were categorized based on whether they received prophylactic G-CSF during the first cycle. The primary outcome measured was the incidence of FN in veterans with risk factor(s) who received CHOP plus an anti-CD20 mAb. The secondary outcome was the percentage of patients with risk factors who received G-CSF regardless of FN incidence. Primary outcome was analyzed using 2-tailed Fisher exact test.

Results

57 patients were included in the final analysis. In patients with at least one risk factor for FN, 26 (60%) received prophylactic G-CSF and 17 (40%) did not. There is 1 case of FN in the group that received G-CSF and 2 cases of FN in the group without G-CSF (RR, 0.33; P = .55; 95% CI, 0.03-3.33).

Conculsions

In patients receiving treatment for NHL with CHOP plus an anti-CD20 mAb, most of the patients with at least 1 risk factor for FN were initiated on G-CSF. Based on the results of the study, our veteran population does not appear to have an increased risk for FN without G-CSF. A larger study is warranted to further evaluate the significance of FN in correlation with prophylactic G-CSF.

Multiple myeloma (MM) accounts for 1% to 2% of all cancers and slightly more than 17% of hematologic malignancies in the United States.¹ MM is characterized by the neoplastic proliferation of immunoglobulin (Ig)-producing plasma cells with ≥ 10% clonal plasma cells in the bone marrow or biopsy-proven bony or soft tissue plasmacytoma, plus presence of related organ or tissue impairment or presence of a biomarker associated with near-inevitable progression to end-organ damage.²

Background

Up to 97% of patients with MM will have a monoclonal (M) protein produced and secreted by the malignant plasma cells, which can be detected by protein electrophoresis of the serum and an aliquot of urine from a 24-hour collection combined with immunofixation of the serum and urine. The M protein in MM usually consists of IgG 50% of the time and light chains 16% of the time. Patients who lack detectable M protein are considered to have nonsecretory myeloma. MM presents with end-organ damage, which includes hypercalcemia, renal dysfunction, anemia, or lytic bone lesions. Patients with MM frequently present with renal insufficiency due to cast nephropathy or light chain deposition disease.³

MM is thought to evolve from monoclonal gammopathy of uncertain significance (MGUS), an asymptomatic premalignant stage of clonal plasma cell proliferation with a risk of progression to active myeloma at 1% per year.^4,5 Epidemiologic data suggest that people who develop MM have a genetic predisposition, but risk factors may develop or be acquired, such as age, immunosuppression, and environmental exposures. To better assess what causes transformation from MGUS to MM, it is important to identify agents that may cause this second hit.⁶

In November 1961, President John F. Kennedy authorized the start of Operation Ranch Hand, the US Air Force’s herbicide program during the Vietnam War. Twenty million gallons of various chemicals were sprayed in Vietnam, eastern Laos, and parts of Cambodia to defoliate rural land, depriving guerillas of their support base. Agent Orange (AO) was one of these chemicals; it is a mixed herbicide with traces of dioxin, a compound that has been associated with major health problems among exposed individuals.⁷ Several studies have evaluated exposure to AO and its potential harmful repercussions. Studies have assessed the link between AO and MGUS as well as AO to various leukemias, such as chronic lymphocytic leukemia.^8,9 Other studies have shown the relationship between AO exposure and worse outcomes in persons with MM.¹⁰ To date, only a single abstract from a US Department of Veterans Affairs (VA) medical center has investigated the relationships between AO exposure and MGUS, MM, and the rate of transformation. The VA study of patients seen from 2005 to 2015 in Detroit, Michigan, found that AO exposure led to an increase in cumulative incidence rate of MGUS/MM, suggesting possible changes in disease biology and genetics.¹¹

In this study, we aimed to determine the incidence of transformation of MGUS to MM in patients with and without exposure to AO. We then analyzed survival as a function of AO exposure, transformation, and clinical and sociodemographic variables. We also explored the impact of psychosocial variables and hematopoietic stem cell transplantation (HSCT), a standard of treatment for MM.

Methods

This retrospective cohort study assembled electronic health record (EHR) data from the Veterans Health Administration Corporate Data Warehouse (CDW). The VA Central Texas Veterans Healthcare System Institutional Review Board granted a waiver of consent for this record review. Eligible patients were Vietnam-era veterans who were in the military during the time that AO was used (1961-1971). Veterans were included if they were being cared for and received a diagnosis for MGUS or MM between October 1, 2009, and September 30, 2015 (all prevalent cases fiscal years 2010-2015). Cases were excluded if there was illogical death data or if age, race, ethnicity, body mass index (BMI), or prior-year diagnostic data were missing.

Measures

Patients were followed through April 2020. Presence of MGUS was defined by the International Classification of Diseases, Ninth Revision (ICD-9) diagnosis code 273.1. MM was identified by ICD-9 diagnosis codes 203.00, 203.01, and 203.02. The study index date was the earliest date of diagnosis of MGUS or MM in fiscal years 2010-2015. It was suspected that some patients with MM may have had a history of MGUS prior to this period. Therefore, for patients with MM, historical diagnosis of MGUS was extracted going back through the earliest data in the CDW (October 1999). Patients diagnosed with both MGUS and MM were considered transformation patients.

Other measures included age at index date, sex, race, ethnicity, VA priority status (a value 1 to 8 summarizing why the veteran qualified for VA care, such as military service-connected disability or very low income), and AO exposure authenticated per VA enrollment files and disability records. Service years were separated into 1961 to 1968 and 1969 to 1971 to match a change in the formulation of AO associated with decreased carcinogenic effect. Comorbidity data from the year prior to first MGUS/MM diagnosis in the observation period were extracted. Lifestyle factors associated with development of MGUS/MM were determined using the following codes: obesity per BMI calculation or diagnosis (ICD-9, 278.0), tobacco use per diagnosis (ICD-9, 305.1, V15.82), and survival from MGUS/MM diagnosis index date to date of death from any cause. Comorbidity was assessed using ICD-9 diagnosis codes to calculate the Charlson Comorbidity Index (CCI), which includes cardiovascular diseases, diabetes mellitus, liver and kidney diseases, cancers, and metastatic solid tumors. Cancers were omitted from our adapted CCI to avoid collinearity in the multivariable models. The theoretical maximum CCI score in this study was 25.^12,13 Additional conditions known to be associated with variation in outcomes among veterans using the VA were indicated, including major depressive disorder, posttraumatic stress disorder (PTSD), alcohol use disorder (AUD), substance use disorder (SUD), and common chronic disease (hypertension, lipid disorders).¹⁴

Statistical Analysis

Sample characteristics were represented by frequencies and percentages for categorical variables and means and SDs (or medians and ranges where appropriate) for continuous variables. A χ² test (or Fisher exact test when cell counts were low) assessed associations in bivariate comparisons. A 2-sample t test (or Wilcoxon rank sum test as appropriate) assessed differences in continuous variables between 2 groups. Kaplan-Meier curves depicted the unadjusted relationship of AO exposure to survival. Cox proportional hazards survival models examined an unadjusted model containing only the AO exposure indicator as a predictor and adjusted models were used for demographic and clinical factors for MGUS and patients with MM separately.

Predictors were age in decades, sex, Hispanic ethnicity, race, nicotine dependence, obesity, overweight, AUD, SUD, major depressive disorder, PTSD, and the adapted CCI. When modeling patients with MM, MGUS was added to the model to identify the transformation group. The interaction of AO with transformation was also analyzed for patients with MM. Results were reported as hazard ratios (HR) with their 95% CI.

Results

We identified 18,215 veterans diagnosed with either MGUS or MM during fiscal years 2010-2015 with 16,366 meeting inclusion criteria. Patients were excluded for missing data on exposure (n = 334), age (n = 12), race (n = 1058), ethnicity (n = 164), diagnosis (n = 47), treatment (n = 56), and BMI (n = 178). All were Vietnam War era veterans; 14 also served in other eras.

The cohort was 98.5% male (Table 1). Twenty-nine percent were Black veterans, 65% were White veterans, and 4% of individuals reported Hispanic ethnicity. Patients had a mean (SD) age of 66.7 (5.9) years (range, 52-96). Most patients were married (58%) or divorced/separated (27%). All were VA priority 1 to 5 (no 6, 7, or 8); 50% were priority 1 with 50% to 100% service-connected disability. Another 29% were eligible for VA care by reason of low income, 17% had 10% to 40% service-connected disability, and 4% were otherwise disabled.

Disscussion

Elucidating the pathophysiology and risk of transformation from MGUS to MM is an ongoing endeavor, even 35 years after the end of US involvement in the Vietnam War. Our study sought to understand a relationship between AO exposure, risk of MGUS transforming to MM, and associated mortality in US Vietnam War veterans. The rate of transformation (MGUS progressing to active MM) is well cited at 1% per year.¹⁵ Here, we found 12% of our cohort had undergone this transformation over 10 years.

Vietnam War era veterans who were exposed to AO during the Operation Ranch Hand period had 2.4 times greater risk of developing MGUS compared with veterans not exposed to AO.⁸ Our study was not designed to look at this association of AO exposure and MGUS/MM as this was a retrospective review to assess the difference in outcomes based on AO exposure. We found that AO exposure is associated with a decrease in mortality in contrast to a prior study showing worse survival with individuals with AO exposure.¹⁰ Another single center study found no association between AO exposure and overall survival, but it did identify an increased risk of progression from MGUS to MM.¹¹ Our study did not show increased risk of transformation but did show positive effect on survival.

Black individuals have twice the risk of developing MM compared with White individuals and are diagnosed at a younger age (66 vs 70 years, respectively).¹⁶ Interestingly, Black race was a protective factor in our study. Given the length of time (35 years) elapsed since the Vietnam War ended, it is likely that most vulnerable Black veterans did not survive until our observation period.

HSCT, as expected, was a protective factor for veterans undergoing this treatment modality, but it is unclear why such a small number (8%) underwent HSCT as this is a standard of care in the management of MM. Obesity was also found to be a protective factor in a prior study, which was also seen in our study cohort.⁸

Limitations

This study was limited by its retrospective review of survivors among the Vietnam-era cohort several decades after the exposure of concern. Clinician notes and full historical data, such as date of onset for any disorder, were unavailable. These data also relied on the practitioners caring for the veterans to make the correct diagnosis with the associated code so that the data could be captured. Neither AO exposure nor diagnoses codes were verified against other sources of data; however, validation studies over the years have supported the accuracy of the diagnosis codes recorded in the VA EHR.

Conclusions

Because AO exposure is a nonmodifiable risk factor, focus should be placed on modifiable risk factors (eg, nicotine dependence, alcohol and substance use disorders, underlying comorbid conditions) as these were associated with worse outcomes. Future studies will look at the correlation of AO exposure, cytogenetics, and clinical outcomes in these veterans to learn how best to identify their disease course and optimize their care in the latter part of their life.

Acknowledgments

This research was supported by the Central Texas Veterans Health Care System and Baylor Scott and White Health, both in Temple and Veterans Affairs Central Western Massachusetts Healthcare System, Leeds.

Multiple myeloma (MM) accounts for 1% to 2% of all cancers and slightly more than 17% of hematologic malignancies in the United States.¹ MM is characterized by the neoplastic proliferation of immunoglobulin (Ig)-producing plasma cells with ≥ 10% clonal plasma cells in the bone marrow or biopsy-proven bony or soft tissue plasmacytoma, plus presence of related organ or tissue impairment or presence of a biomarker associated with near-inevitable progression to end-organ damage.²

Background

Up to 97% of patients with MM will have a monoclonal (M) protein produced and secreted by the malignant plasma cells, which can be detected by protein electrophoresis of the serum and an aliquot of urine from a 24-hour collection combined with immunofixation of the serum and urine. The M protein in MM usually consists of IgG 50% of the time and light chains 16% of the time. Patients who lack detectable M protein are considered to have nonsecretory myeloma. MM presents with end-organ damage, which includes hypercalcemia, renal dysfunction, anemia, or lytic bone lesions. Patients with MM frequently present with renal insufficiency due to cast nephropathy or light chain deposition disease.³

MM is thought to evolve from monoclonal gammopathy of uncertain significance (MGUS), an asymptomatic premalignant stage of clonal plasma cell proliferation with a risk of progression to active myeloma at 1% per year.^4,5 Epidemiologic data suggest that people who develop MM have a genetic predisposition, but risk factors may develop or be acquired, such as age, immunosuppression, and environmental exposures. To better assess what causes transformation from MGUS to MM, it is important to identify agents that may cause this second hit.⁶

In November 1961, President John F. Kennedy authorized the start of Operation Ranch Hand, the US Air Force’s herbicide program during the Vietnam War. Twenty million gallons of various chemicals were sprayed in Vietnam, eastern Laos, and parts of Cambodia to defoliate rural land, depriving guerillas of their support base. Agent Orange (AO) was one of these chemicals; it is a mixed herbicide with traces of dioxin, a compound that has been associated with major health problems among exposed individuals.⁷ Several studies have evaluated exposure to AO and its potential harmful repercussions. Studies have assessed the link between AO and MGUS as well as AO to various leukemias, such as chronic lymphocytic leukemia.^8,9 Other studies have shown the relationship between AO exposure and worse outcomes in persons with MM.¹⁰ To date, only a single abstract from a US Department of Veterans Affairs (VA) medical center has investigated the relationships between AO exposure and MGUS, MM, and the rate of transformation. The VA study of patients seen from 2005 to 2015 in Detroit, Michigan, found that AO exposure led to an increase in cumulative incidence rate of MGUS/MM, suggesting possible changes in disease biology and genetics.¹¹

In this study, we aimed to determine the incidence of transformation of MGUS to MM in patients with and without exposure to AO. We then analyzed survival as a function of AO exposure, transformation, and clinical and sociodemographic variables. We also explored the impact of psychosocial variables and hematopoietic stem cell transplantation (HSCT), a standard of treatment for MM.

Methods

This retrospective cohort study assembled electronic health record (EHR) data from the Veterans Health Administration Corporate Data Warehouse (CDW). The VA Central Texas Veterans Healthcare System Institutional Review Board granted a waiver of consent for this record review. Eligible patients were Vietnam-era veterans who were in the military during the time that AO was used (1961-1971). Veterans were included if they were being cared for and received a diagnosis for MGUS or MM between October 1, 2009, and September 30, 2015 (all prevalent cases fiscal years 2010-2015). Cases were excluded if there was illogical death data or if age, race, ethnicity, body mass index (BMI), or prior-year diagnostic data were missing.

Measures

Patients were followed through April 2020. Presence of MGUS was defined by the International Classification of Diseases, Ninth Revision (ICD-9) diagnosis code 273.1. MM was identified by ICD-9 diagnosis codes 203.00, 203.01, and 203.02. The study index date was the earliest date of diagnosis of MGUS or MM in fiscal years 2010-2015. It was suspected that some patients with MM may have had a history of MGUS prior to this period. Therefore, for patients with MM, historical diagnosis of MGUS was extracted going back through the earliest data in the CDW (October 1999). Patients diagnosed with both MGUS and MM were considered transformation patients.

Other measures included age at index date, sex, race, ethnicity, VA priority status (a value 1 to 8 summarizing why the veteran qualified for VA care, such as military service-connected disability or very low income), and AO exposure authenticated per VA enrollment files and disability records. Service years were separated into 1961 to 1968 and 1969 to 1971 to match a change in the formulation of AO associated with decreased carcinogenic effect. Comorbidity data from the year prior to first MGUS/MM diagnosis in the observation period were extracted. Lifestyle factors associated with development of MGUS/MM were determined using the following codes: obesity per BMI calculation or diagnosis (ICD-9, 278.0), tobacco use per diagnosis (ICD-9, 305.1, V15.82), and survival from MGUS/MM diagnosis index date to date of death from any cause. Comorbidity was assessed using ICD-9 diagnosis codes to calculate the Charlson Comorbidity Index (CCI), which includes cardiovascular diseases, diabetes mellitus, liver and kidney diseases, cancers, and metastatic solid tumors. Cancers were omitted from our adapted CCI to avoid collinearity in the multivariable models. The theoretical maximum CCI score in this study was 25.^12,13 Additional conditions known to be associated with variation in outcomes among veterans using the VA were indicated, including major depressive disorder, posttraumatic stress disorder (PTSD), alcohol use disorder (AUD), substance use disorder (SUD), and common chronic disease (hypertension, lipid disorders).¹⁴

Statistical Analysis

Sample characteristics were represented by frequencies and percentages for categorical variables and means and SDs (or medians and ranges where appropriate) for continuous variables. A χ² test (or Fisher exact test when cell counts were low) assessed associations in bivariate comparisons. A 2-sample t test (or Wilcoxon rank sum test as appropriate) assessed differences in continuous variables between 2 groups. Kaplan-Meier curves depicted the unadjusted relationship of AO exposure to survival. Cox proportional hazards survival models examined an unadjusted model containing only the AO exposure indicator as a predictor and adjusted models were used for demographic and clinical factors for MGUS and patients with MM separately.

Predictors were age in decades, sex, Hispanic ethnicity, race, nicotine dependence, obesity, overweight, AUD, SUD, major depressive disorder, PTSD, and the adapted CCI. When modeling patients with MM, MGUS was added to the model to identify the transformation group. The interaction of AO with transformation was also analyzed for patients with MM. Results were reported as hazard ratios (HR) with their 95% CI.

Results

We identified 18,215 veterans diagnosed with either MGUS or MM during fiscal years 2010-2015 with 16,366 meeting inclusion criteria. Patients were excluded for missing data on exposure (n = 334), age (n = 12), race (n = 1058), ethnicity (n = 164), diagnosis (n = 47), treatment (n = 56), and BMI (n = 178). All were Vietnam War era veterans; 14 also served in other eras.

The cohort was 98.5% male (Table 1). Twenty-nine percent were Black veterans, 65% were White veterans, and 4% of individuals reported Hispanic ethnicity. Patients had a mean (SD) age of 66.7 (5.9) years (range, 52-96). Most patients were married (58%) or divorced/separated (27%). All were VA priority 1 to 5 (no 6, 7, or 8); 50% were priority 1 with 50% to 100% service-connected disability. Another 29% were eligible for VA care by reason of low income, 17% had 10% to 40% service-connected disability, and 4% were otherwise disabled.

Disscussion

Elucidating the pathophysiology and risk of transformation from MGUS to MM is an ongoing endeavor, even 35 years after the end of US involvement in the Vietnam War. Our study sought to understand a relationship between AO exposure, risk of MGUS transforming to MM, and associated mortality in US Vietnam War veterans. The rate of transformation (MGUS progressing to active MM) is well cited at 1% per year.¹⁵ Here, we found 12% of our cohort had undergone this transformation over 10 years.

Vietnam War era veterans who were exposed to AO during the Operation Ranch Hand period had 2.4 times greater risk of developing MGUS compared with veterans not exposed to AO.⁸ Our study was not designed to look at this association of AO exposure and MGUS/MM as this was a retrospective review to assess the difference in outcomes based on AO exposure. We found that AO exposure is associated with a decrease in mortality in contrast to a prior study showing worse survival with individuals with AO exposure.¹⁰ Another single center study found no association between AO exposure and overall survival, but it did identify an increased risk of progression from MGUS to MM.¹¹ Our study did not show increased risk of transformation but did show positive effect on survival.

Black individuals have twice the risk of developing MM compared with White individuals and are diagnosed at a younger age (66 vs 70 years, respectively).¹⁶ Interestingly, Black race was a protective factor in our study. Given the length of time (35 years) elapsed since the Vietnam War ended, it is likely that most vulnerable Black veterans did not survive until our observation period.

HSCT, as expected, was a protective factor for veterans undergoing this treatment modality, but it is unclear why such a small number (8%) underwent HSCT as this is a standard of care in the management of MM. Obesity was also found to be a protective factor in a prior study, which was also seen in our study cohort.⁸

Limitations

This study was limited by its retrospective review of survivors among the Vietnam-era cohort several decades after the exposure of concern. Clinician notes and full historical data, such as date of onset for any disorder, were unavailable. These data also relied on the practitioners caring for the veterans to make the correct diagnosis with the associated code so that the data could be captured. Neither AO exposure nor diagnoses codes were verified against other sources of data; however, validation studies over the years have supported the accuracy of the diagnosis codes recorded in the VA EHR.

Conclusions

Because AO exposure is a nonmodifiable risk factor, focus should be placed on modifiable risk factors (eg, nicotine dependence, alcohol and substance use disorders, underlying comorbid conditions) as these were associated with worse outcomes. Future studies will look at the correlation of AO exposure, cytogenetics, and clinical outcomes in these veterans to learn how best to identify their disease course and optimize their care in the latter part of their life.

Acknowledgments

This research was supported by the Central Texas Veterans Health Care System and Baylor Scott and White Health, both in Temple and Veterans Affairs Central Western Massachusetts Healthcare System, Leeds.

Multiple myeloma (MM) accounts for 1% to 2% of all cancers and slightly more than 17% of hematologic malignancies in the United States.¹ MM is characterized by the neoplastic proliferation of immunoglobulin (Ig)-producing plasma cells with ≥ 10% clonal plasma cells in the bone marrow or biopsy-proven bony or soft tissue plasmacytoma, plus presence of related organ or tissue impairment or presence of a biomarker associated with near-inevitable progression to end-organ damage.²

Background

Up to 97% of patients with MM will have a monoclonal (M) protein produced and secreted by the malignant plasma cells, which can be detected by protein electrophoresis of the serum and an aliquot of urine from a 24-hour collection combined with immunofixation of the serum and urine. The M protein in MM usually consists of IgG 50% of the time and light chains 16% of the time. Patients who lack detectable M protein are considered to have nonsecretory myeloma. MM presents with end-organ damage, which includes hypercalcemia, renal dysfunction, anemia, or lytic bone lesions. Patients with MM frequently present with renal insufficiency due to cast nephropathy or light chain deposition disease.³

MM is thought to evolve from monoclonal gammopathy of uncertain significance (MGUS), an asymptomatic premalignant stage of clonal plasma cell proliferation with a risk of progression to active myeloma at 1% per year.^4,5 Epidemiologic data suggest that people who develop MM have a genetic predisposition, but risk factors may develop or be acquired, such as age, immunosuppression, and environmental exposures. To better assess what causes transformation from MGUS to MM, it is important to identify agents that may cause this second hit.⁶

In November 1961, President John F. Kennedy authorized the start of Operation Ranch Hand, the US Air Force’s herbicide program during the Vietnam War. Twenty million gallons of various chemicals were sprayed in Vietnam, eastern Laos, and parts of Cambodia to defoliate rural land, depriving guerillas of their support base. Agent Orange (AO) was one of these chemicals; it is a mixed herbicide with traces of dioxin, a compound that has been associated with major health problems among exposed individuals.⁷ Several studies have evaluated exposure to AO and its potential harmful repercussions. Studies have assessed the link between AO and MGUS as well as AO to various leukemias, such as chronic lymphocytic leukemia.^8,9 Other studies have shown the relationship between AO exposure and worse outcomes in persons with MM.¹⁰ To date, only a single abstract from a US Department of Veterans Affairs (VA) medical center has investigated the relationships between AO exposure and MGUS, MM, and the rate of transformation. The VA study of patients seen from 2005 to 2015 in Detroit, Michigan, found that AO exposure led to an increase in cumulative incidence rate of MGUS/MM, suggesting possible changes in disease biology and genetics.¹¹

In this study, we aimed to determine the incidence of transformation of MGUS to MM in patients with and without exposure to AO. We then analyzed survival as a function of AO exposure, transformation, and clinical and sociodemographic variables. We also explored the impact of psychosocial variables and hematopoietic stem cell transplantation (HSCT), a standard of treatment for MM.

Methods

This retrospective cohort study assembled electronic health record (EHR) data from the Veterans Health Administration Corporate Data Warehouse (CDW). The VA Central Texas Veterans Healthcare System Institutional Review Board granted a waiver of consent for this record review. Eligible patients were Vietnam-era veterans who were in the military during the time that AO was used (1961-1971). Veterans were included if they were being cared for and received a diagnosis for MGUS or MM between October 1, 2009, and September 30, 2015 (all prevalent cases fiscal years 2010-2015). Cases were excluded if there was illogical death data or if age, race, ethnicity, body mass index (BMI), or prior-year diagnostic data were missing.

Measures

Patients were followed through April 2020. Presence of MGUS was defined by the International Classification of Diseases, Ninth Revision (ICD-9) diagnosis code 273.1. MM was identified by ICD-9 diagnosis codes 203.00, 203.01, and 203.02. The study index date was the earliest date of diagnosis of MGUS or MM in fiscal years 2010-2015. It was suspected that some patients with MM may have had a history of MGUS prior to this period. Therefore, for patients with MM, historical diagnosis of MGUS was extracted going back through the earliest data in the CDW (October 1999). Patients diagnosed with both MGUS and MM were considered transformation patients.

Other measures included age at index date, sex, race, ethnicity, VA priority status (a value 1 to 8 summarizing why the veteran qualified for VA care, such as military service-connected disability or very low income), and AO exposure authenticated per VA enrollment files and disability records. Service years were separated into 1961 to 1968 and 1969 to 1971 to match a change in the formulation of AO associated with decreased carcinogenic effect. Comorbidity data from the year prior to first MGUS/MM diagnosis in the observation period were extracted. Lifestyle factors associated with development of MGUS/MM were determined using the following codes: obesity per BMI calculation or diagnosis (ICD-9, 278.0), tobacco use per diagnosis (ICD-9, 305.1, V15.82), and survival from MGUS/MM diagnosis index date to date of death from any cause. Comorbidity was assessed using ICD-9 diagnosis codes to calculate the Charlson Comorbidity Index (CCI), which includes cardiovascular diseases, diabetes mellitus, liver and kidney diseases, cancers, and metastatic solid tumors. Cancers were omitted from our adapted CCI to avoid collinearity in the multivariable models. The theoretical maximum CCI score in this study was 25.^12,13 Additional conditions known to be associated with variation in outcomes among veterans using the VA were indicated, including major depressive disorder, posttraumatic stress disorder (PTSD), alcohol use disorder (AUD), substance use disorder (SUD), and common chronic disease (hypertension, lipid disorders).¹⁴

Statistical Analysis

Sample characteristics were represented by frequencies and percentages for categorical variables and means and SDs (or medians and ranges where appropriate) for continuous variables. A χ² test (or Fisher exact test when cell counts were low) assessed associations in bivariate comparisons. A 2-sample t test (or Wilcoxon rank sum test as appropriate) assessed differences in continuous variables between 2 groups. Kaplan-Meier curves depicted the unadjusted relationship of AO exposure to survival. Cox proportional hazards survival models examined an unadjusted model containing only the AO exposure indicator as a predictor and adjusted models were used for demographic and clinical factors for MGUS and patients with MM separately.

Predictors were age in decades, sex, Hispanic ethnicity, race, nicotine dependence, obesity, overweight, AUD, SUD, major depressive disorder, PTSD, and the adapted CCI. When modeling patients with MM, MGUS was added to the model to identify the transformation group. The interaction of AO with transformation was also analyzed for patients with MM. Results were reported as hazard ratios (HR) with their 95% CI.

Results

We identified 18,215 veterans diagnosed with either MGUS or MM during fiscal years 2010-2015 with 16,366 meeting inclusion criteria. Patients were excluded for missing data on exposure (n = 334), age (n = 12), race (n = 1058), ethnicity (n = 164), diagnosis (n = 47), treatment (n = 56), and BMI (n = 178). All were Vietnam War era veterans; 14 also served in other eras.

The cohort was 98.5% male (Table 1). Twenty-nine percent were Black veterans, 65% were White veterans, and 4% of individuals reported Hispanic ethnicity. Patients had a mean (SD) age of 66.7 (5.9) years (range, 52-96). Most patients were married (58%) or divorced/separated (27%). All were VA priority 1 to 5 (no 6, 7, or 8); 50% were priority 1 with 50% to 100% service-connected disability. Another 29% were eligible for VA care by reason of low income, 17% had 10% to 40% service-connected disability, and 4% were otherwise disabled.

Disscussion

Elucidating the pathophysiology and risk of transformation from MGUS to MM is an ongoing endeavor, even 35 years after the end of US involvement in the Vietnam War. Our study sought to understand a relationship between AO exposure, risk of MGUS transforming to MM, and associated mortality in US Vietnam War veterans. The rate of transformation (MGUS progressing to active MM) is well cited at 1% per year.¹⁵ Here, we found 12% of our cohort had undergone this transformation over 10 years.

Vietnam War era veterans who were exposed to AO during the Operation Ranch Hand period had 2.4 times greater risk of developing MGUS compared with veterans not exposed to AO.⁸ Our study was not designed to look at this association of AO exposure and MGUS/MM as this was a retrospective review to assess the difference in outcomes based on AO exposure. We found that AO exposure is associated with a decrease in mortality in contrast to a prior study showing worse survival with individuals with AO exposure.¹⁰ Another single center study found no association between AO exposure and overall survival, but it did identify an increased risk of progression from MGUS to MM.¹¹ Our study did not show increased risk of transformation but did show positive effect on survival.

Black individuals have twice the risk of developing MM compared with White individuals and are diagnosed at a younger age (66 vs 70 years, respectively).¹⁶ Interestingly, Black race was a protective factor in our study. Given the length of time (35 years) elapsed since the Vietnam War ended, it is likely that most vulnerable Black veterans did not survive until our observation period.

HSCT, as expected, was a protective factor for veterans undergoing this treatment modality, but it is unclear why such a small number (8%) underwent HSCT as this is a standard of care in the management of MM. Obesity was also found to be a protective factor in a prior study, which was also seen in our study cohort.⁸

Limitations

This study was limited by its retrospective review of survivors among the Vietnam-era cohort several decades after the exposure of concern. Clinician notes and full historical data, such as date of onset for any disorder, were unavailable. These data also relied on the practitioners caring for the veterans to make the correct diagnosis with the associated code so that the data could be captured. Neither AO exposure nor diagnoses codes were verified against other sources of data; however, validation studies over the years have supported the accuracy of the diagnosis codes recorded in the VA EHR.

Conclusions

Because AO exposure is a nonmodifiable risk factor, focus should be placed on modifiable risk factors (eg, nicotine dependence, alcohol and substance use disorders, underlying comorbid conditions) as these were associated with worse outcomes. Future studies will look at the correlation of AO exposure, cytogenetics, and clinical outcomes in these veterans to learn how best to identify their disease course and optimize their care in the latter part of their life.

Acknowledgments

This research was supported by the Central Texas Veterans Health Care System and Baylor Scott and White Health, both in Temple and Veterans Affairs Central Western Massachusetts Healthcare System, Leeds.