Breast Cancer

Key clinical point: Both hypofractionated (HF) and conventional fractionated (CF) radiotherapy were comparably effective in patients who had undergone surgery for breast cancer (BC); however, the HF vs CF regimen was more effective in reducing skin toxicity and relieving fatigue.

Major finding: CF vs HF radiotherapy demonstrated no significant improvement in terms of local recurrence (odds ratio [OR] 0.91; P  =  .30) or overall survival (OR 1.08; P  =  .28) outcomes. Although safety outcomes like breast pain, breast atrophy, lymphedema, pneumonia, pulmonary fibrosis, telangiectasia, and cardiotoxicity were comparable in both groups, HF vs CF regimen led to lower skin toxicity (OR 0.43; P < .01) and improved patient fatigue outcomes (OR 0.73; P < .01).

Study details: This meta-analysis of 35 studies included 18,246 patients diagnosed with BC who underwent surgery and were treated with HF or CF radiotherapy.

Disclosures: This study was supported by the Key Research and Development Projects of Shaanxi Province, China, and other sources. The authors declared no conflicts of interest.

Source: Lu Y, Hui B, Yang D, et al. Efficacy and safety analysis of hypofractionated and conventional fractionated radiotherapy in postoperative breast cancer patients. BMC Cancer. 2024;24:181. doi: 10.1186/s12885-024-11918-2  Source

Key clinical point: Both hypofractionated (HF) and conventional fractionated (CF) radiotherapy were comparably effective in patients who had undergone surgery for breast cancer (BC); however, the HF vs CF regimen was more effective in reducing skin toxicity and relieving fatigue.

Major finding: CF vs HF radiotherapy demonstrated no significant improvement in terms of local recurrence (odds ratio [OR] 0.91; P  =  .30) or overall survival (OR 1.08; P  =  .28) outcomes. Although safety outcomes like breast pain, breast atrophy, lymphedema, pneumonia, pulmonary fibrosis, telangiectasia, and cardiotoxicity were comparable in both groups, HF vs CF regimen led to lower skin toxicity (OR 0.43; P < .01) and improved patient fatigue outcomes (OR 0.73; P < .01).

Study details: This meta-analysis of 35 studies included 18,246 patients diagnosed with BC who underwent surgery and were treated with HF or CF radiotherapy.

Disclosures: This study was supported by the Key Research and Development Projects of Shaanxi Province, China, and other sources. The authors declared no conflicts of interest.

Source: Lu Y, Hui B, Yang D, et al. Efficacy and safety analysis of hypofractionated and conventional fractionated radiotherapy in postoperative breast cancer patients. BMC Cancer. 2024;24:181. doi: 10.1186/s12885-024-11918-2  Source

Key clinical point: Both hypofractionated (HF) and conventional fractionated (CF) radiotherapy were comparably effective in patients who had undergone surgery for breast cancer (BC); however, the HF vs CF regimen was more effective in reducing skin toxicity and relieving fatigue.

Major finding: CF vs HF radiotherapy demonstrated no significant improvement in terms of local recurrence (odds ratio [OR] 0.91; P  =  .30) or overall survival (OR 1.08; P  =  .28) outcomes. Although safety outcomes like breast pain, breast atrophy, lymphedema, pneumonia, pulmonary fibrosis, telangiectasia, and cardiotoxicity were comparable in both groups, HF vs CF regimen led to lower skin toxicity (OR 0.43; P < .01) and improved patient fatigue outcomes (OR 0.73; P < .01).

Study details: This meta-analysis of 35 studies included 18,246 patients diagnosed with BC who underwent surgery and were treated with HF or CF radiotherapy.

Disclosures: This study was supported by the Key Research and Development Projects of Shaanxi Province, China, and other sources. The authors declared no conflicts of interest.

Source: Lu Y, Hui B, Yang D, et al. Efficacy and safety analysis of hypofractionated and conventional fractionated radiotherapy in postoperative breast cancer patients. BMC Cancer. 2024;24:181. doi: 10.1186/s12885-024-11918-2  Source

Key clinical point: Compared with patients having metaplastic breast cancer (MpBC) who did not receive any chemotherapy, prognostic outcomes were significantly improved in those who received neoadjuvant chemotherapy (NAC) or adjuvant chemotherapy.

Major finding: Compared with patients who did not receive any chemotherapy, the overall survival (OS) improved significantly in those who received adjuvant chemotherapy (hazard ratio [HR] 0.451; P < .001) or responded to NAC (HR 0.479; P < .001). Breast cancer-specific survival also improved in patients who received and responded to NAC or received adjuvant chemotherapy.

Study details: This study analyzed data from the Surveillance, Epidemiology, and End Results (SEER) database and included 1186 patients with MpBC who received NAC (n = 181), adjuvant chemotherapy (n = 647), or did not receive any chemotherapy (n = 358).

Disclosures: This study was supported by the Science and Technology Innovation Plan of Shanghai Science and Technology Commission and the Obstetrics and Gynecology Hospital of Fudan University. The authors declared no conflicts of interest.

Source: Zhang M, Yuan J, Wang M, Zhang M, Chen H. Chemotherapy is of prognostic significance to metaplastic breast cancer. Sci Rep. 2024;14:1210. doi: 10.1038/s41598-024-51627-1 Source

Key clinical point: Compared with patients having metaplastic breast cancer (MpBC) who did not receive any chemotherapy, prognostic outcomes were significantly improved in those who received neoadjuvant chemotherapy (NAC) or adjuvant chemotherapy.

Major finding: Compared with patients who did not receive any chemotherapy, the overall survival (OS) improved significantly in those who received adjuvant chemotherapy (hazard ratio [HR] 0.451; P < .001) or responded to NAC (HR 0.479; P < .001). Breast cancer-specific survival also improved in patients who received and responded to NAC or received adjuvant chemotherapy.

Study details: This study analyzed data from the Surveillance, Epidemiology, and End Results (SEER) database and included 1186 patients with MpBC who received NAC (n = 181), adjuvant chemotherapy (n = 647), or did not receive any chemotherapy (n = 358).

Disclosures: This study was supported by the Science and Technology Innovation Plan of Shanghai Science and Technology Commission and the Obstetrics and Gynecology Hospital of Fudan University. The authors declared no conflicts of interest.

Source: Zhang M, Yuan J, Wang M, Zhang M, Chen H. Chemotherapy is of prognostic significance to metaplastic breast cancer. Sci Rep. 2024;14:1210. doi: 10.1038/s41598-024-51627-1 Source

Key clinical point: Compared with patients having metaplastic breast cancer (MpBC) who did not receive any chemotherapy, prognostic outcomes were significantly improved in those who received neoadjuvant chemotherapy (NAC) or adjuvant chemotherapy.

Major finding: Compared with patients who did not receive any chemotherapy, the overall survival (OS) improved significantly in those who received adjuvant chemotherapy (hazard ratio [HR] 0.451; P < .001) or responded to NAC (HR 0.479; P < .001). Breast cancer-specific survival also improved in patients who received and responded to NAC or received adjuvant chemotherapy.

Study details: This study analyzed data from the Surveillance, Epidemiology, and End Results (SEER) database and included 1186 patients with MpBC who received NAC (n = 181), adjuvant chemotherapy (n = 647), or did not receive any chemotherapy (n = 358).

Disclosures: This study was supported by the Science and Technology Innovation Plan of Shanghai Science and Technology Commission and the Obstetrics and Gynecology Hospital of Fudan University. The authors declared no conflicts of interest.

Source: Zhang M, Yuan J, Wang M, Zhang M, Chen H. Chemotherapy is of prognostic significance to metaplastic breast cancer. Sci Rep. 2024;14:1210. doi: 10.1038/s41598-024-51627-1 Source

Key clinical point: Patients with early-stage triple-negative breast cancer (TNBC) should receive adjuvant chemotherapy without unnecessary delays after primary surgery because prognosis may worsen if treatment is postponed beyond 6 weeks.

Major finding: Patients who received adjuvant systemic therapy within 22-28 days after surgery reported the most favorable overall survival (OS) outcomes (median OS 10.2 years), with the OS decreasing in the groups that received adjuvant systemic therapy during 29-35 days, 36-42 days, and >6 weeks after surgery (8.3 years, 7.8 years, and 6.9 years, respectively).

Study details: Findings are from a retrospective cohort study that included 245 patients with early TNBC who received adjuvant chemotherapy after primary surgery.

Disclosures: The open access funding for this study was enabled and organized by Projekt DEAL. Some authors declared receiving honoraria or travel reimbursements from or serving as consultants or board members for various sources.

Source: Hatzipanagiotou ME, Pigerl M, Gerken M, et al. Clinical impact of delaying initiation of adjuvant chemotherapy in patients with early triple negative breast cancer. Breast Cancer Res Treat. 2024 (Jan 19). doi: 10.1007/s10549-023-07207-4 Source

Key clinical point: Patients with early-stage triple-negative breast cancer (TNBC) should receive adjuvant chemotherapy without unnecessary delays after primary surgery because prognosis may worsen if treatment is postponed beyond 6 weeks.

Major finding: Patients who received adjuvant systemic therapy within 22-28 days after surgery reported the most favorable overall survival (OS) outcomes (median OS 10.2 years), with the OS decreasing in the groups that received adjuvant systemic therapy during 29-35 days, 36-42 days, and >6 weeks after surgery (8.3 years, 7.8 years, and 6.9 years, respectively).

Study details: Findings are from a retrospective cohort study that included 245 patients with early TNBC who received adjuvant chemotherapy after primary surgery.

Disclosures: The open access funding for this study was enabled and organized by Projekt DEAL. Some authors declared receiving honoraria or travel reimbursements from or serving as consultants or board members for various sources.

Source: Hatzipanagiotou ME, Pigerl M, Gerken M, et al. Clinical impact of delaying initiation of adjuvant chemotherapy in patients with early triple negative breast cancer. Breast Cancer Res Treat. 2024 (Jan 19). doi: 10.1007/s10549-023-07207-4 Source

Key clinical point: Patients with early-stage triple-negative breast cancer (TNBC) should receive adjuvant chemotherapy without unnecessary delays after primary surgery because prognosis may worsen if treatment is postponed beyond 6 weeks.

Major finding: Patients who received adjuvant systemic therapy within 22-28 days after surgery reported the most favorable overall survival (OS) outcomes (median OS 10.2 years), with the OS decreasing in the groups that received adjuvant systemic therapy during 29-35 days, 36-42 days, and >6 weeks after surgery (8.3 years, 7.8 years, and 6.9 years, respectively).

Study details: Findings are from a retrospective cohort study that included 245 patients with early TNBC who received adjuvant chemotherapy after primary surgery.

Disclosures: The open access funding for this study was enabled and organized by Projekt DEAL. Some authors declared receiving honoraria or travel reimbursements from or serving as consultants or board members for various sources.

Source: Hatzipanagiotou ME, Pigerl M, Gerken M, et al. Clinical impact of delaying initiation of adjuvant chemotherapy in patients with early triple negative breast cancer. Breast Cancer Res Treat. 2024 (Jan 19). doi: 10.1007/s10549-023-07207-4 Source

Key clinical point: Addition of veliparib vs placebo to carboplatin + paclitaxel did not significantly improve the overall survival (OS) outcomes in patients with BRCA1/2-mutated human epidermal growth factor receptor 2-negative (HER2−) advanced breast cancer (BC).

Major finding: A combination of veliparib and carboplatin + paclitaxel vs placebo + carboplatin + paclitaxel led to numerical but nonsignificant improvements in median OS (32.4 vs 28.2 months; hazard ratio 0.916; P = .434). The addition of veliparib was generally well-tolerated, consistent with previous findings.

Study details: Findings are from the phase 3 BROCADE3 trial which included 509 patients with BRCA1/2-mutated HER2− advanced BC who had received at least two prior lines of chemotherapy and were randomly assigned to receive carboplatin + paclitaxel with either veliparib or placebo.

Disclosures: This study was funded by AbbVie. No other disclosures were reported in this study.

Source: Diéras V, Han HS, Wildiers H, et al. Veliparib with carboplatin and paclitaxel in BRCA-mutated advanced breast cancer (BROCADE3): Final overall survival results from a randomized phase 3 trial. Eur J Cancer. 2024;200:113580. doi: 10.1016/j.ejca.2024.113580 Source

Key clinical point: Addition of veliparib vs placebo to carboplatin + paclitaxel did not significantly improve the overall survival (OS) outcomes in patients with BRCA1/2-mutated human epidermal growth factor receptor 2-negative (HER2−) advanced breast cancer (BC).

Major finding: A combination of veliparib and carboplatin + paclitaxel vs placebo + carboplatin + paclitaxel led to numerical but nonsignificant improvements in median OS (32.4 vs 28.2 months; hazard ratio 0.916; P = .434). The addition of veliparib was generally well-tolerated, consistent with previous findings.

Study details: Findings are from the phase 3 BROCADE3 trial which included 509 patients with BRCA1/2-mutated HER2− advanced BC who had received at least two prior lines of chemotherapy and were randomly assigned to receive carboplatin + paclitaxel with either veliparib or placebo.

Disclosures: This study was funded by AbbVie. No other disclosures were reported in this study.

Source: Diéras V, Han HS, Wildiers H, et al. Veliparib with carboplatin and paclitaxel in BRCA-mutated advanced breast cancer (BROCADE3): Final overall survival results from a randomized phase 3 trial. Eur J Cancer. 2024;200:113580. doi: 10.1016/j.ejca.2024.113580 Source

Key clinical point: Addition of veliparib vs placebo to carboplatin + paclitaxel did not significantly improve the overall survival (OS) outcomes in patients with BRCA1/2-mutated human epidermal growth factor receptor 2-negative (HER2−) advanced breast cancer (BC).

Major finding: A combination of veliparib and carboplatin + paclitaxel vs placebo + carboplatin + paclitaxel led to numerical but nonsignificant improvements in median OS (32.4 vs 28.2 months; hazard ratio 0.916; P = .434). The addition of veliparib was generally well-tolerated, consistent with previous findings.

Study details: Findings are from the phase 3 BROCADE3 trial which included 509 patients with BRCA1/2-mutated HER2− advanced BC who had received at least two prior lines of chemotherapy and were randomly assigned to receive carboplatin + paclitaxel with either veliparib or placebo.

Disclosures: This study was funded by AbbVie. No other disclosures were reported in this study.

Source: Diéras V, Han HS, Wildiers H, et al. Veliparib with carboplatin and paclitaxel in BRCA-mutated advanced breast cancer (BROCADE3): Final overall survival results from a randomized phase 3 trial. Eur J Cancer. 2024;200:113580. doi: 10.1016/j.ejca.2024.113580 Source

Key clinical point: Treatment with toripalimab + nab-paclitaxel vs placebo + nab-paclitaxel significantly improved progression-free survival (PFS) and showed an acceptable safety profile in patients with programmed death ligand-1 (PD-L1)-positive metastatic or recurrent triple-negative breast cancer (TNBC).

Major finding: Toripalimab + nab-paclitaxel vs placebo + nab-paclitaxel led to a significantly longer PFS (median 8.4 vs 5.6 months) in patients with PD-L1-positive TNBC (hazard ratio 0.65; P = .0102) and similar incidences of grade ≥3 treatment-emergent adverse events (56.4% vs 54.3%) and fatal adverse events (0.6% vs 3.4%).

Study details: Findings are from the phase 3 TORCHLIGHT trial which included 531 patients with metastatic or recurrent locally advanced TNBC who were previously untreated or treated with up to one systemic chemotherapy and were randomly assigned to receive toripalimab + nab-paclitaxel or placebo + nab-paclitaxel. Of these, 300 patients had PD-L1-positive TNBC.

Disclosures: This study was sponsored by Shanghai Junshi Biosciences and supported by other sources. Five authors declared being employees of Shanghai Junshi Biosciences or TopAlliance Biosciences. The other authors declared no competing interests.

Source: Jiang Z, Ouyang Q, Sun T, et al. Toripalimab plus nab-paclitaxel in metastatic or recurrent triple-negative breast cancer: A randomized phase 3 trial. Nat Med. 2024;30:249-256. doi: 10.1038/s41591-023-02677-x Source

Key clinical point: Treatment with toripalimab + nab-paclitaxel vs placebo + nab-paclitaxel significantly improved progression-free survival (PFS) and showed an acceptable safety profile in patients with programmed death ligand-1 (PD-L1)-positive metastatic or recurrent triple-negative breast cancer (TNBC).

Major finding: Toripalimab + nab-paclitaxel vs placebo + nab-paclitaxel led to a significantly longer PFS (median 8.4 vs 5.6 months) in patients with PD-L1-positive TNBC (hazard ratio 0.65; P = .0102) and similar incidences of grade ≥3 treatment-emergent adverse events (56.4% vs 54.3%) and fatal adverse events (0.6% vs 3.4%).

Study details: Findings are from the phase 3 TORCHLIGHT trial which included 531 patients with metastatic or recurrent locally advanced TNBC who were previously untreated or treated with up to one systemic chemotherapy and were randomly assigned to receive toripalimab + nab-paclitaxel or placebo + nab-paclitaxel. Of these, 300 patients had PD-L1-positive TNBC.

Disclosures: This study was sponsored by Shanghai Junshi Biosciences and supported by other sources. Five authors declared being employees of Shanghai Junshi Biosciences or TopAlliance Biosciences. The other authors declared no competing interests.

Source: Jiang Z, Ouyang Q, Sun T, et al. Toripalimab plus nab-paclitaxel in metastatic or recurrent triple-negative breast cancer: A randomized phase 3 trial. Nat Med. 2024;30:249-256. doi: 10.1038/s41591-023-02677-x Source

Key clinical point: Treatment with toripalimab + nab-paclitaxel vs placebo + nab-paclitaxel significantly improved progression-free survival (PFS) and showed an acceptable safety profile in patients with programmed death ligand-1 (PD-L1)-positive metastatic or recurrent triple-negative breast cancer (TNBC).

Major finding: Toripalimab + nab-paclitaxel vs placebo + nab-paclitaxel led to a significantly longer PFS (median 8.4 vs 5.6 months) in patients with PD-L1-positive TNBC (hazard ratio 0.65; P = .0102) and similar incidences of grade ≥3 treatment-emergent adverse events (56.4% vs 54.3%) and fatal adverse events (0.6% vs 3.4%).

Study details: Findings are from the phase 3 TORCHLIGHT trial which included 531 patients with metastatic or recurrent locally advanced TNBC who were previously untreated or treated with up to one systemic chemotherapy and were randomly assigned to receive toripalimab + nab-paclitaxel or placebo + nab-paclitaxel. Of these, 300 patients had PD-L1-positive TNBC.

Disclosures: This study was sponsored by Shanghai Junshi Biosciences and supported by other sources. Five authors declared being employees of Shanghai Junshi Biosciences or TopAlliance Biosciences. The other authors declared no competing interests.

Source: Jiang Z, Ouyang Q, Sun T, et al. Toripalimab plus nab-paclitaxel in metastatic or recurrent triple-negative breast cancer: A randomized phase 3 trial. Nat Med. 2024;30:249-256. doi: 10.1038/s41591-023-02677-x Source

Key clinical point: In patients with platinum-pretreated advanced triple-negative breast cancer (TNBC), a chemotherapy-free maintenance regimen containing olaparib with or without durvalumab vs continued platinum-based chemotherapy led to a greater improvement in progression-free survival (PFS) with no new safety signals.

Major finding: The median PFS was 4.0 months with olaparib and 6.1 months with olaparib + durvalumab, with both treatments providing greater PFS benefit than the historical control of continued platinum-based therapy (P = .0023 and P < .0001, respectively). No treatment-related deaths or new safety signals were reported.

Study details: Findings are from the phase 2 DORA trial which included 45 patients with advanced TNBC who had stable disease or complete or partial response after receiving platinum-based chemotherapy and were randomly assigned to receive olaparib or olaparib + durvalumab.

Disclosures: This study was supported by AstraZeneca Pharmaceuticals LP. Some authors declared receiving honoraria, research funding, or fees; owning stocks; or having other ties with AstraZeneca and various other sources.

Source: Tan TJ, Sammons S, Im YH, et al. Phase II DORA study of olaparib with or without durvalumab as a chemotherapy-free maintenance strategy in platinum-pretreated advanced triple-negative breast cancer. Clin Cancer Res. 2024 (Jan 18). doi: 10.1158/1078-0432.CCR-23-2513 Source

Key clinical point: In patients with platinum-pretreated advanced triple-negative breast cancer (TNBC), a chemotherapy-free maintenance regimen containing olaparib with or without durvalumab vs continued platinum-based chemotherapy led to a greater improvement in progression-free survival (PFS) with no new safety signals.

Major finding: The median PFS was 4.0 months with olaparib and 6.1 months with olaparib + durvalumab, with both treatments providing greater PFS benefit than the historical control of continued platinum-based therapy (P = .0023 and P < .0001, respectively). No treatment-related deaths or new safety signals were reported.

Study details: Findings are from the phase 2 DORA trial which included 45 patients with advanced TNBC who had stable disease or complete or partial response after receiving platinum-based chemotherapy and were randomly assigned to receive olaparib or olaparib + durvalumab.

Disclosures: This study was supported by AstraZeneca Pharmaceuticals LP. Some authors declared receiving honoraria, research funding, or fees; owning stocks; or having other ties with AstraZeneca and various other sources.

Source: Tan TJ, Sammons S, Im YH, et al. Phase II DORA study of olaparib with or without durvalumab as a chemotherapy-free maintenance strategy in platinum-pretreated advanced triple-negative breast cancer. Clin Cancer Res. 2024 (Jan 18). doi: 10.1158/1078-0432.CCR-23-2513 Source

Key clinical point: In patients with platinum-pretreated advanced triple-negative breast cancer (TNBC), a chemotherapy-free maintenance regimen containing olaparib with or without durvalumab vs continued platinum-based chemotherapy led to a greater improvement in progression-free survival (PFS) with no new safety signals.

Major finding: The median PFS was 4.0 months with olaparib and 6.1 months with olaparib + durvalumab, with both treatments providing greater PFS benefit than the historical control of continued platinum-based therapy (P = .0023 and P < .0001, respectively). No treatment-related deaths or new safety signals were reported.

Study details: Findings are from the phase 2 DORA trial which included 45 patients with advanced TNBC who had stable disease or complete or partial response after receiving platinum-based chemotherapy and were randomly assigned to receive olaparib or olaparib + durvalumab.

Disclosures: This study was supported by AstraZeneca Pharmaceuticals LP. Some authors declared receiving honoraria, research funding, or fees; owning stocks; or having other ties with AstraZeneca and various other sources.

Source: Tan TJ, Sammons S, Im YH, et al. Phase II DORA study of olaparib with or without durvalumab as a chemotherapy-free maintenance strategy in platinum-pretreated advanced triple-negative breast cancer. Clin Cancer Res. 2024 (Jan 18). doi: 10.1158/1078-0432.CCR-23-2513 Source

Key clinical point: Neoadjuvant endocrine therapy with fulvestrant or anastrozole + fulvestrant led to an endocrine-sensitive disease rate (ESDR) comparable to anastrozole alone in postmenopausal women with estrogen receptor (ER)-rich, human epidermal growth factor receptor 2-negative (ERBB2−) breast cancer (BC).

Major finding: Both fulvestrant and anastrozole + fulvestrant vs anastrozole alone demonstrated no significant improvement in the ESDR at 6 months (22.8% and 20.5% vs 18.7%, respectively; Wald test, P ≥ .98) and median percentage change in Ki67 at 4 weeks (−79.1% and −83.5% vs −80.6%, respectively; P ≥ .15).

Study details: Findings are from the phase 3 ALTERNATE trial, which included 1298 treatment-naive postmenopausal women with ER-rich/ERBB2− BC who were randomly assigned to receive anastrozole, fulvestrant, or anastrozole + fulvestrant for 6 months in a neoadjuvant setting.

Disclosures: This study was supported by the US National Institutes of Health (NIH)/National Cancer Institute (NCI) and other sources. Several authors declared receiving grants, personal fees, or research support or having other ties with various sources, including NIH/NCI.

Source: Ma CX, Suman VJ, Sanati S, et al. Endocrine-sensitive disease rate in postmenopausal patients with estrogen receptor-rich/ERBB2-negative breast cancer receiving neoadjuvant anastrozole, fulvestrant, or their combination: A phase 3 randomized clinical trial. JAMA Oncol. 2024 (Jan 18). doi: 10.1001/jamaoncol.2023.6038  Source

Key clinical point: Neoadjuvant endocrine therapy with fulvestrant or anastrozole + fulvestrant led to an endocrine-sensitive disease rate (ESDR) comparable to anastrozole alone in postmenopausal women with estrogen receptor (ER)-rich, human epidermal growth factor receptor 2-negative (ERBB2−) breast cancer (BC).

Major finding: Both fulvestrant and anastrozole + fulvestrant vs anastrozole alone demonstrated no significant improvement in the ESDR at 6 months (22.8% and 20.5% vs 18.7%, respectively; Wald test, P ≥ .98) and median percentage change in Ki67 at 4 weeks (−79.1% and −83.5% vs −80.6%, respectively; P ≥ .15).

Study details: Findings are from the phase 3 ALTERNATE trial, which included 1298 treatment-naive postmenopausal women with ER-rich/ERBB2− BC who were randomly assigned to receive anastrozole, fulvestrant, or anastrozole + fulvestrant for 6 months in a neoadjuvant setting.

Disclosures: This study was supported by the US National Institutes of Health (NIH)/National Cancer Institute (NCI) and other sources. Several authors declared receiving grants, personal fees, or research support or having other ties with various sources, including NIH/NCI.

Source: Ma CX, Suman VJ, Sanati S, et al. Endocrine-sensitive disease rate in postmenopausal patients with estrogen receptor-rich/ERBB2-negative breast cancer receiving neoadjuvant anastrozole, fulvestrant, or their combination: A phase 3 randomized clinical trial. JAMA Oncol. 2024 (Jan 18). doi: 10.1001/jamaoncol.2023.6038  Source

Key clinical point: Neoadjuvant endocrine therapy with fulvestrant or anastrozole + fulvestrant led to an endocrine-sensitive disease rate (ESDR) comparable to anastrozole alone in postmenopausal women with estrogen receptor (ER)-rich, human epidermal growth factor receptor 2-negative (ERBB2−) breast cancer (BC).

Major finding: Both fulvestrant and anastrozole + fulvestrant vs anastrozole alone demonstrated no significant improvement in the ESDR at 6 months (22.8% and 20.5% vs 18.7%, respectively; Wald test, P ≥ .98) and median percentage change in Ki67 at 4 weeks (−79.1% and −83.5% vs −80.6%, respectively; P ≥ .15).

Study details: Findings are from the phase 3 ALTERNATE trial, which included 1298 treatment-naive postmenopausal women with ER-rich/ERBB2− BC who were randomly assigned to receive anastrozole, fulvestrant, or anastrozole + fulvestrant for 6 months in a neoadjuvant setting.

Disclosures: This study was supported by the US National Institutes of Health (NIH)/National Cancer Institute (NCI) and other sources. Several authors declared receiving grants, personal fees, or research support or having other ties with various sources, including NIH/NCI.

Source: Ma CX, Suman VJ, Sanati S, et al. Endocrine-sensitive disease rate in postmenopausal patients with estrogen receptor-rich/ERBB2-negative breast cancer receiving neoadjuvant anastrozole, fulvestrant, or their combination: A phase 3 randomized clinical trial. JAMA Oncol. 2024 (Jan 18). doi: 10.1001/jamaoncol.2023.6038  Source

Key clinical point: High initial fat body mass was associated with a risk for vertebral fracture (VF) progression in postmenopausal women with hormone receptor-positive (HR+) early breast cancer (BC) who received aromatase inhibitors (AI) plus denosumab.

Major finding: After 18 months of adjuvant therapy with AI and denosumab, 4.4% of patients had VF progression, with percentage of fat body mass (odds ratio [OR] 5.41; P = .01) and Fracture Risk Assessment Tool score (OR 3.95; P = .04) being independently associated with VF progression risk.

Study details: Findings are from a prospective cohort study including 237 postmenopausal women with HR+ early BC who received adjuvant therapy with AI and denosumab.

Disclosures: This study did not declare any specific funding. Three authors declared receiving personal fees or grants or having other ties with various sources.

Source: Cosentini D, Pedersini R, Mauro PD, et al. Fat body mass and vertebral fracture progression in women with breast cancer. JAMA Netw Open. 2024;7:e2350950. doi:10.1001/jamanetworkopen.2023.50950 Source

Key clinical point: High initial fat body mass was associated with a risk for vertebral fracture (VF) progression in postmenopausal women with hormone receptor-positive (HR+) early breast cancer (BC) who received aromatase inhibitors (AI) plus denosumab.

Major finding: After 18 months of adjuvant therapy with AI and denosumab, 4.4% of patients had VF progression, with percentage of fat body mass (odds ratio [OR] 5.41; P = .01) and Fracture Risk Assessment Tool score (OR 3.95; P = .04) being independently associated with VF progression risk.

Study details: Findings are from a prospective cohort study including 237 postmenopausal women with HR+ early BC who received adjuvant therapy with AI and denosumab.

Disclosures: This study did not declare any specific funding. Three authors declared receiving personal fees or grants or having other ties with various sources.

Source: Cosentini D, Pedersini R, Mauro PD, et al. Fat body mass and vertebral fracture progression in women with breast cancer. JAMA Netw Open. 2024;7:e2350950. doi:10.1001/jamanetworkopen.2023.50950 Source

Key clinical point: High initial fat body mass was associated with a risk for vertebral fracture (VF) progression in postmenopausal women with hormone receptor-positive (HR+) early breast cancer (BC) who received aromatase inhibitors (AI) plus denosumab.

Major finding: After 18 months of adjuvant therapy with AI and denosumab, 4.4% of patients had VF progression, with percentage of fat body mass (odds ratio [OR] 5.41; P = .01) and Fracture Risk Assessment Tool score (OR 3.95; P = .04) being independently associated with VF progression risk.

Study details: Findings are from a prospective cohort study including 237 postmenopausal women with HR+ early BC who received adjuvant therapy with AI and denosumab.

Disclosures: This study did not declare any specific funding. Three authors declared receiving personal fees or grants or having other ties with various sources.

Source: Cosentini D, Pedersini R, Mauro PD, et al. Fat body mass and vertebral fracture progression in women with breast cancer. JAMA Netw Open. 2024;7:e2350950. doi:10.1001/jamanetworkopen.2023.50950 Source

Although a new study of hyperbaric oxygen therapy in JAMA Oncology has been “ anxiously awaited” by breast radiation oncologists, the trial does not provide the smoking gun evidence that would justify its routine use, according to experts.

Here’s a snapshot of the current state of affairs regarding hyperbaric oxygen therapy in breast radiation oncology.

What Is Hyperbaric Oxygen Therapy?

Hyperbaric oxygen therapy is a medical procedure aimed at reducing the late toxic effects of breast irradiation, including pain, fibrosis, and edema. Patients breathe pure oxygen at greater than atmospheric pressure in a specialized chamber or room. The process leads to increased partial pressures of oxygen in blood and tissues, which can help form new blood vessels and repair damaged irradiated tissue.
 

What Is the Current State of Play?

In 2021, the US Food and Drug Administration (FDA) cleared the therapy for a variety of disorders, including radiation injuries. Some health insurers may cover the procedure as well.

Still, the FDA has cautioned clinicians “to be wary of unproven claims of effect,” University of Toronto radiation oncologist Ezra Hahn, MD, and colleagues Aron Popovtzer, MD, and Benjamin W. Corn, MD, said in a JAMA Oncology editorial.

Despite the FDA clearance, there is limited evidence to suggest hyperbaric oxygen therapy reduces the late toxic effects of breast irradiation, and the research to date has largely come from small and non-randomized studies.

While the procedure is “seldom used by many in practice,” there is growing industry for the procedure. More than 1000 facilities in the United States offer hyperbaric oxygen therapy, but only about 15% are accredited by the Undersea and Hyperbaric Medical Society, which may signal misuse of the procedure.
 

Does the Latest Study Clarify Whether This Therapy Works?

The most recent evidence on hyperbaric oxygen therapy comes from a single-institution, randomized trial from the Netherlands, dubbed HONEY. In the trial, 189 women who experienced late toxic effects following adjuvant breast radiation were randomized 2:1 to hyperbaric oxygen therapy or a control arm. Of the 125 women offered hyperbaric oxygen therapy, only 25% (31 patients) accepted and completed treatment; those who declined received usual follow-up care.

Among women who completed hyperbaric oxygen therapy, 32% (10 of 31) reported moderate or severe pain at follow-up vs 75% of controls — a 66% reduction. Similarly, 17% of women who completed hyperbaric oxygen therapy reported moderate or severe fibrosis at follow-up vs 86% among the hypothetical treatment-completing controls — an 86% reduction. However, the authors did not observe a significant effect of hyperbaric oxygen therapy on breast edema, movement restriction, or overall quality of life.

The authors also included an intention-to-treat analysis, which included patients who declined hyperbaric oxygen therapy as part of the intervention group. This analysis estimated clinical outcomes among patients who had the intervention available to them, with some taking advantage and others not.

Overall, hyperbaric oxygen therapy “seems effective for reducing pain and fibrosis in women with late local toxic effects after breast irradiation,” concluded investigators led by Dieuwke R. Mink van der Molen, PhD, a researcher at the University Medical Centre Utrecht, the Netherlands. However, most patients offered the therapy declined the invitation, largely because of the “high treatment intensity” burden.
 

What Are the Limitations of the Current Study?

The investigators and editorialists highlighted a handful of limitations.

For one, the trial had no sham hyperbaric oxygen therapy procedure in the control group. In fact, control patients were selected from a larger cohort of ongoing studies in the Netherlands who were not aware the trial was being conducted.

Because radiation toxicity fluctuates over time and can improve on its own, “a high-quality control arm” would be needed in such a trial, especially to account for subjective and patient-reported outcomes, the editorialists said.

Another key issue: Only a quarter of women offered hyperbaric oxygen therapy agreed to and completed treatment. The treatment burden was the most common reason for declining the procedure. Study participants underwent 30-40 2-hour sessions over 6-8 weeks.
 

Will the Latest Evidence Usher This Therapy Into More Standard Use?

Probably not, the editorialists concluded.

The HONEY trial “reminds us that convenience has become a factor weighted heavily by patients during the process of decision-making,” Dr. Hahn and colleagues wrote. “Despite experiencing relatively severe symptoms, many declined hyperbaric therapy after being counseled by HONEY investigators about the time commitment.”

Despite its limitations, the trial does offer “modest evidence to justify the use of [hyperbaric oxygen therapy] in treating the chronic morbidities associated with breast irradiation,” the editorialists said. But an “adequately powered randomized, sham-controlled, double-blind trials will be necessary to truly determine the benefit.”

HONEY was partially funded by The Da Vinci Clinic, the Netherlands. The investigators didn’t have any disclosures. One of Dr. Hahn’s coauthors reported personal fees from Lutris Pharma as Chief Medical Officer.
 

A version of this article appeared on Medscape.com.

Although a new study of hyperbaric oxygen therapy in JAMA Oncology has been “ anxiously awaited” by breast radiation oncologists, the trial does not provide the smoking gun evidence that would justify its routine use, according to experts.

Here’s a snapshot of the current state of affairs regarding hyperbaric oxygen therapy in breast radiation oncology.

What Is Hyperbaric Oxygen Therapy?

Hyperbaric oxygen therapy is a medical procedure aimed at reducing the late toxic effects of breast irradiation, including pain, fibrosis, and edema. Patients breathe pure oxygen at greater than atmospheric pressure in a specialized chamber or room. The process leads to increased partial pressures of oxygen in blood and tissues, which can help form new blood vessels and repair damaged irradiated tissue.
 

What Is the Current State of Play?

In 2021, the US Food and Drug Administration (FDA) cleared the therapy for a variety of disorders, including radiation injuries. Some health insurers may cover the procedure as well.

Still, the FDA has cautioned clinicians “to be wary of unproven claims of effect,” University of Toronto radiation oncologist Ezra Hahn, MD, and colleagues Aron Popovtzer, MD, and Benjamin W. Corn, MD, said in a JAMA Oncology editorial.

Despite the FDA clearance, there is limited evidence to suggest hyperbaric oxygen therapy reduces the late toxic effects of breast irradiation, and the research to date has largely come from small and non-randomized studies.

While the procedure is “seldom used by many in practice,” there is growing industry for the procedure. More than 1000 facilities in the United States offer hyperbaric oxygen therapy, but only about 15% are accredited by the Undersea and Hyperbaric Medical Society, which may signal misuse of the procedure.
 

Does the Latest Study Clarify Whether This Therapy Works?

The most recent evidence on hyperbaric oxygen therapy comes from a single-institution, randomized trial from the Netherlands, dubbed HONEY. In the trial, 189 women who experienced late toxic effects following adjuvant breast radiation were randomized 2:1 to hyperbaric oxygen therapy or a control arm. Of the 125 women offered hyperbaric oxygen therapy, only 25% (31 patients) accepted and completed treatment; those who declined received usual follow-up care.

Among women who completed hyperbaric oxygen therapy, 32% (10 of 31) reported moderate or severe pain at follow-up vs 75% of controls — a 66% reduction. Similarly, 17% of women who completed hyperbaric oxygen therapy reported moderate or severe fibrosis at follow-up vs 86% among the hypothetical treatment-completing controls — an 86% reduction. However, the authors did not observe a significant effect of hyperbaric oxygen therapy on breast edema, movement restriction, or overall quality of life.

The authors also included an intention-to-treat analysis, which included patients who declined hyperbaric oxygen therapy as part of the intervention group. This analysis estimated clinical outcomes among patients who had the intervention available to them, with some taking advantage and others not.

Overall, hyperbaric oxygen therapy “seems effective for reducing pain and fibrosis in women with late local toxic effects after breast irradiation,” concluded investigators led by Dieuwke R. Mink van der Molen, PhD, a researcher at the University Medical Centre Utrecht, the Netherlands. However, most patients offered the therapy declined the invitation, largely because of the “high treatment intensity” burden.
 

What Are the Limitations of the Current Study?

The investigators and editorialists highlighted a handful of limitations.

For one, the trial had no sham hyperbaric oxygen therapy procedure in the control group. In fact, control patients were selected from a larger cohort of ongoing studies in the Netherlands who were not aware the trial was being conducted.

Because radiation toxicity fluctuates over time and can improve on its own, “a high-quality control arm” would be needed in such a trial, especially to account for subjective and patient-reported outcomes, the editorialists said.

Another key issue: Only a quarter of women offered hyperbaric oxygen therapy agreed to and completed treatment. The treatment burden was the most common reason for declining the procedure. Study participants underwent 30-40 2-hour sessions over 6-8 weeks.
 

Will the Latest Evidence Usher This Therapy Into More Standard Use?

Probably not, the editorialists concluded.

The HONEY trial “reminds us that convenience has become a factor weighted heavily by patients during the process of decision-making,” Dr. Hahn and colleagues wrote. “Despite experiencing relatively severe symptoms, many declined hyperbaric therapy after being counseled by HONEY investigators about the time commitment.”

Despite its limitations, the trial does offer “modest evidence to justify the use of [hyperbaric oxygen therapy] in treating the chronic morbidities associated with breast irradiation,” the editorialists said. But an “adequately powered randomized, sham-controlled, double-blind trials will be necessary to truly determine the benefit.”

HONEY was partially funded by The Da Vinci Clinic, the Netherlands. The investigators didn’t have any disclosures. One of Dr. Hahn’s coauthors reported personal fees from Lutris Pharma as Chief Medical Officer.
 

A version of this article appeared on Medscape.com.

Although a new study of hyperbaric oxygen therapy in JAMA Oncology has been “ anxiously awaited” by breast radiation oncologists, the trial does not provide the smoking gun evidence that would justify its routine use, according to experts.

Here’s a snapshot of the current state of affairs regarding hyperbaric oxygen therapy in breast radiation oncology.

What Is Hyperbaric Oxygen Therapy?

Hyperbaric oxygen therapy is a medical procedure aimed at reducing the late toxic effects of breast irradiation, including pain, fibrosis, and edema. Patients breathe pure oxygen at greater than atmospheric pressure in a specialized chamber or room. The process leads to increased partial pressures of oxygen in blood and tissues, which can help form new blood vessels and repair damaged irradiated tissue.
 

What Is the Current State of Play?

In 2021, the US Food and Drug Administration (FDA) cleared the therapy for a variety of disorders, including radiation injuries. Some health insurers may cover the procedure as well.

Still, the FDA has cautioned clinicians “to be wary of unproven claims of effect,” University of Toronto radiation oncologist Ezra Hahn, MD, and colleagues Aron Popovtzer, MD, and Benjamin W. Corn, MD, said in a JAMA Oncology editorial.

Despite the FDA clearance, there is limited evidence to suggest hyperbaric oxygen therapy reduces the late toxic effects of breast irradiation, and the research to date has largely come from small and non-randomized studies.

While the procedure is “seldom used by many in practice,” there is growing industry for the procedure. More than 1000 facilities in the United States offer hyperbaric oxygen therapy, but only about 15% are accredited by the Undersea and Hyperbaric Medical Society, which may signal misuse of the procedure.
 

Does the Latest Study Clarify Whether This Therapy Works?

The most recent evidence on hyperbaric oxygen therapy comes from a single-institution, randomized trial from the Netherlands, dubbed HONEY. In the trial, 189 women who experienced late toxic effects following adjuvant breast radiation were randomized 2:1 to hyperbaric oxygen therapy or a control arm. Of the 125 women offered hyperbaric oxygen therapy, only 25% (31 patients) accepted and completed treatment; those who declined received usual follow-up care.

Among women who completed hyperbaric oxygen therapy, 32% (10 of 31) reported moderate or severe pain at follow-up vs 75% of controls — a 66% reduction. Similarly, 17% of women who completed hyperbaric oxygen therapy reported moderate or severe fibrosis at follow-up vs 86% among the hypothetical treatment-completing controls — an 86% reduction. However, the authors did not observe a significant effect of hyperbaric oxygen therapy on breast edema, movement restriction, or overall quality of life.

The authors also included an intention-to-treat analysis, which included patients who declined hyperbaric oxygen therapy as part of the intervention group. This analysis estimated clinical outcomes among patients who had the intervention available to them, with some taking advantage and others not.

Overall, hyperbaric oxygen therapy “seems effective for reducing pain and fibrosis in women with late local toxic effects after breast irradiation,” concluded investigators led by Dieuwke R. Mink van der Molen, PhD, a researcher at the University Medical Centre Utrecht, the Netherlands. However, most patients offered the therapy declined the invitation, largely because of the “high treatment intensity” burden.
 

What Are the Limitations of the Current Study?

The investigators and editorialists highlighted a handful of limitations.

For one, the trial had no sham hyperbaric oxygen therapy procedure in the control group. In fact, control patients were selected from a larger cohort of ongoing studies in the Netherlands who were not aware the trial was being conducted.

Because radiation toxicity fluctuates over time and can improve on its own, “a high-quality control arm” would be needed in such a trial, especially to account for subjective and patient-reported outcomes, the editorialists said.

Another key issue: Only a quarter of women offered hyperbaric oxygen therapy agreed to and completed treatment. The treatment burden was the most common reason for declining the procedure. Study participants underwent 30-40 2-hour sessions over 6-8 weeks.
 

Will the Latest Evidence Usher This Therapy Into More Standard Use?

Probably not, the editorialists concluded.

The HONEY trial “reminds us that convenience has become a factor weighted heavily by patients during the process of decision-making,” Dr. Hahn and colleagues wrote. “Despite experiencing relatively severe symptoms, many declined hyperbaric therapy after being counseled by HONEY investigators about the time commitment.”

Despite its limitations, the trial does offer “modest evidence to justify the use of [hyperbaric oxygen therapy] in treating the chronic morbidities associated with breast irradiation,” the editorialists said. But an “adequately powered randomized, sham-controlled, double-blind trials will be necessary to truly determine the benefit.”

HONEY was partially funded by The Da Vinci Clinic, the Netherlands. The investigators didn’t have any disclosures. One of Dr. Hahn’s coauthors reported personal fees from Lutris Pharma as Chief Medical Officer.
 

A version of this article appeared on Medscape.com.

A study from the University of Texas demonstrates the feasibility of using robotic single-port laparoscopy in nipple-sparing mastectomy (NSM), a type of conservative mastectomy preserving the skin and nipple-areola complex. The new findings potentially expand the application of robotic surgery to a larger patient population but doubts about the safety of this approach linger.

Robotic Mastectomy

The first surgeries involving the Da Vinci robotic surgeon for breast removal date to 2015. Multiport robotic surgery faces significant obstacles in this field, however. Feasibility studies have primarily focused on women with small breasts, corresponding to cup size C or smaller.

In the study that was published in JAMA Surgery, surgeons used the more cost-effective single-port platform for bilateral NSM procedures. Among the 20 patients included in the analysis (age, 29-63 years), 11 underwent prophylactic mastectomy (for a high risk for cancer) and 9 had mastectomy for breast tumors. Breast sizes ranged from A cup to D cup.

The duration of the procedure, from skin incision to suture for both breasts, ranged from 205 to 351 minutes (median, 277 minutes). No immediate operative complications (eg, hematoma) occurred, and there was no need for conversion to open surgery in any case. Over the 36-month follow-up, there were no recurrences. About 95% of patients retained skin sensitivity and 55% retained nipple sensitivity.
 

Unanswered Questions

In an accompanying article, Monica Morrow, MD, director of surgical breast oncology at the Memorial Sloan-Kettering Cancer Center in New York, acknowledged that the new evidence confirms the surgical approach’s feasibility but deems it insufficient to adopt it lightly. “At this point, the issue is not whether robotic mastectomy can be done but whether there is sufficient information about its oncologic safety that it should be done,” she wrote.

In a 2019 statement that was updated in 2021, the US Food and Drug Administration stated, “The safety and effectiveness of using robotically assisted surgical devices in mastectomy procedures or in the prevention or treatment of breast cancer have not been established.” The significance of this caution is underscored by the experience with laparoscopic and robotic radical hysterectomies. These procedures were widely adopted until a randomized prospective study demonstrated lower disease-free and overall survival for the minimally invasive approach compared with open surgery.

The University of Texas surgeons stated that acceptable safety and oncological outcomes for robotic NSM compared with conventional NSM had been demonstrated. They cited two trials with 238 cases and a median follow-up of less than 3 years. Dr. Morrow wrote, “While these reports provide reassurance that gross residual tumor is not being left behind, they do not address the issue of failure to remove all of the breast tissue due to thick skin flaps, with the potential for development of late recurrence or new cancers.” It is worth noting that even with the traditional surgical approach, the 5-year local recurrence rate after NSM is approximately double when observed with shorter follow-ups.

According to Dr. Morrow, the high rate of sensory preservation observed with robotic surgery, a desirable outcome for patients, is also a cause for concern. “While this may be due to incision placement or minimal skin flap retraction, as suggested by the authors, it is equally plausible that this could be due to thick skin flaps with preservation of the terminal branches of the fourth intercostal nerve.”

Therefore, more information on long-term oncological outcomes in a large number of patients will be necessary to confirm the safety of the procedure. In addition, measuring patient-reported outcomes will be useful in demonstrating that the benefits of the procedure outweigh increased operating times and costs. 

This article was translated from Univadis Italy, which is part of the Medscape Professional Network. A version of this article appeared on Medscape.com.

A study from the University of Texas demonstrates the feasibility of using robotic single-port laparoscopy in nipple-sparing mastectomy (NSM), a type of conservative mastectomy preserving the skin and nipple-areola complex. The new findings potentially expand the application of robotic surgery to a larger patient population but doubts about the safety of this approach linger.

Robotic Mastectomy

The first surgeries involving the Da Vinci robotic surgeon for breast removal date to 2015. Multiport robotic surgery faces significant obstacles in this field, however. Feasibility studies have primarily focused on women with small breasts, corresponding to cup size C or smaller.

In the study that was published in JAMA Surgery, surgeons used the more cost-effective single-port platform for bilateral NSM procedures. Among the 20 patients included in the analysis (age, 29-63 years), 11 underwent prophylactic mastectomy (for a high risk for cancer) and 9 had mastectomy for breast tumors. Breast sizes ranged from A cup to D cup.

The duration of the procedure, from skin incision to suture for both breasts, ranged from 205 to 351 minutes (median, 277 minutes). No immediate operative complications (eg, hematoma) occurred, and there was no need for conversion to open surgery in any case. Over the 36-month follow-up, there were no recurrences. About 95% of patients retained skin sensitivity and 55% retained nipple sensitivity.
 

Unanswered Questions

In an accompanying article, Monica Morrow, MD, director of surgical breast oncology at the Memorial Sloan-Kettering Cancer Center in New York, acknowledged that the new evidence confirms the surgical approach’s feasibility but deems it insufficient to adopt it lightly. “At this point, the issue is not whether robotic mastectomy can be done but whether there is sufficient information about its oncologic safety that it should be done,” she wrote.

In a 2019 statement that was updated in 2021, the US Food and Drug Administration stated, “The safety and effectiveness of using robotically assisted surgical devices in mastectomy procedures or in the prevention or treatment of breast cancer have not been established.” The significance of this caution is underscored by the experience with laparoscopic and robotic radical hysterectomies. These procedures were widely adopted until a randomized prospective study demonstrated lower disease-free and overall survival for the minimally invasive approach compared with open surgery.

The University of Texas surgeons stated that acceptable safety and oncological outcomes for robotic NSM compared with conventional NSM had been demonstrated. They cited two trials with 238 cases and a median follow-up of less than 3 years. Dr. Morrow wrote, “While these reports provide reassurance that gross residual tumor is not being left behind, they do not address the issue of failure to remove all of the breast tissue due to thick skin flaps, with the potential for development of late recurrence or new cancers.” It is worth noting that even with the traditional surgical approach, the 5-year local recurrence rate after NSM is approximately double when observed with shorter follow-ups.

According to Dr. Morrow, the high rate of sensory preservation observed with robotic surgery, a desirable outcome for patients, is also a cause for concern. “While this may be due to incision placement or minimal skin flap retraction, as suggested by the authors, it is equally plausible that this could be due to thick skin flaps with preservation of the terminal branches of the fourth intercostal nerve.”

Therefore, more information on long-term oncological outcomes in a large number of patients will be necessary to confirm the safety of the procedure. In addition, measuring patient-reported outcomes will be useful in demonstrating that the benefits of the procedure outweigh increased operating times and costs. 

This article was translated from Univadis Italy, which is part of the Medscape Professional Network. A version of this article appeared on Medscape.com.

A study from the University of Texas demonstrates the feasibility of using robotic single-port laparoscopy in nipple-sparing mastectomy (NSM), a type of conservative mastectomy preserving the skin and nipple-areola complex. The new findings potentially expand the application of robotic surgery to a larger patient population but doubts about the safety of this approach linger.

Robotic Mastectomy

The first surgeries involving the Da Vinci robotic surgeon for breast removal date to 2015. Multiport robotic surgery faces significant obstacles in this field, however. Feasibility studies have primarily focused on women with small breasts, corresponding to cup size C or smaller.

In the study that was published in JAMA Surgery, surgeons used the more cost-effective single-port platform for bilateral NSM procedures. Among the 20 patients included in the analysis (age, 29-63 years), 11 underwent prophylactic mastectomy (for a high risk for cancer) and 9 had mastectomy for breast tumors. Breast sizes ranged from A cup to D cup.

The duration of the procedure, from skin incision to suture for both breasts, ranged from 205 to 351 minutes (median, 277 minutes). No immediate operative complications (eg, hematoma) occurred, and there was no need for conversion to open surgery in any case. Over the 36-month follow-up, there were no recurrences. About 95% of patients retained skin sensitivity and 55% retained nipple sensitivity.
 

Unanswered Questions

In an accompanying article, Monica Morrow, MD, director of surgical breast oncology at the Memorial Sloan-Kettering Cancer Center in New York, acknowledged that the new evidence confirms the surgical approach’s feasibility but deems it insufficient to adopt it lightly. “At this point, the issue is not whether robotic mastectomy can be done but whether there is sufficient information about its oncologic safety that it should be done,” she wrote.

In a 2019 statement that was updated in 2021, the US Food and Drug Administration stated, “The safety and effectiveness of using robotically assisted surgical devices in mastectomy procedures or in the prevention or treatment of breast cancer have not been established.” The significance of this caution is underscored by the experience with laparoscopic and robotic radical hysterectomies. These procedures were widely adopted until a randomized prospective study demonstrated lower disease-free and overall survival for the minimally invasive approach compared with open surgery.

The University of Texas surgeons stated that acceptable safety and oncological outcomes for robotic NSM compared with conventional NSM had been demonstrated. They cited two trials with 238 cases and a median follow-up of less than 3 years. Dr. Morrow wrote, “While these reports provide reassurance that gross residual tumor is not being left behind, they do not address the issue of failure to remove all of the breast tissue due to thick skin flaps, with the potential for development of late recurrence or new cancers.” It is worth noting that even with the traditional surgical approach, the 5-year local recurrence rate after NSM is approximately double when observed with shorter follow-ups.

According to Dr. Morrow, the high rate of sensory preservation observed with robotic surgery, a desirable outcome for patients, is also a cause for concern. “While this may be due to incision placement or minimal skin flap retraction, as suggested by the authors, it is equally plausible that this could be due to thick skin flaps with preservation of the terminal branches of the fourth intercostal nerve.”

Therefore, more information on long-term oncological outcomes in a large number of patients will be necessary to confirm the safety of the procedure. In addition, measuring patient-reported outcomes will be useful in demonstrating that the benefits of the procedure outweigh increased operating times and costs. 

This article was translated from Univadis Italy, which is part of the Medscape Professional Network. A version of this article appeared on Medscape.com.