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Neoadjuvant Chemotherapy for Male Breast Cancer: A Retrospective Cohort Study
Zejian Yang1,2, Peng Ni1,2, Yu Wang1,2
1Department of Breast Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
Neoadjuvant chemotherapy (Neo-CT) shows survival benefits for select male breast cancer (MaBC) patients, particularly those achieving pathological complete response (pCR). pCR is linked to early-stage and hormone receptor-negative MaBC, improving overall and breast cancer-specific survival.
Area of Science:
- Oncology
- Medical Research
Background:
- The survival advantage of neoadjuvant chemotherapy (Neo-CT) in male breast carcinoma (MaBC) is not well-established.
- Identifying specific patient subgroups who benefit from Neo-CT is crucial for treatment optimization.
Purpose of the Study:
- To evaluate the impact of Neo-CT on therapeutic response and prognosis in male breast carcinoma patients.
- To define the patient population that may benefit from Neo-CT and identify predictors of pathological complete response (pCR).
Main Methods:
- Utilized data from the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) database.
- Employed Kaplan-Meier analysis, Cox proportional hazards model, and binary logistic regression.
- Analyzed outcomes for 4171 MaBC patients, categorizing them by Neo-CT and adjuvant chemotherapy regimens.
Main Results:
- Achieving pathological complete response (pCR) was associated with significantly improved 5-year and 10-year overall survival (OS) and breast cancer-specific survival (BCSS).
- pCR was more likely in patients with stage I-II disease and hormone receptor (HR)-negative MaBC, with a pCR rate of 66.67% in this subgroup.
- Out of 4171 patients, 12.12% achieved pCR.
Conclusions:
- Neoadjuvant chemotherapy can offer a survival benefit in male breast carcinoma, especially when pCR is achieved.
- Early-stage (I-II) and hormone receptor-negative MaBC patients are potential candidates for Neo-CT, as they show higher pCR rates.
- Further research is warranted to refine Neo-CT selection criteria for male breast cancer patients.
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