Prognostic value of residual cancer burden after neoadjuvant chemotherapy in breast cancer: a comprehensive subtype-specific analysis.

ABSTRACT: This study evaluated the prognostic impact of residual cancer burden (RCB) on breast cancer subtypes following neoadjuvant chemotherapy (NAC). We retrospectively examined 2,416 breast cancer patients treated with NAC and surgery at Asan Medical Center (2015-2020). Baseline characteristics, clinicopathological parameters, recurrence, and survival outcomes were analyzed using Kaplan-Meier and Cox regression methods to assess RCB's prognostic significance across subtypes. Pathologic complete response (pCR) was achieved in 25.6% (619) of patients. RCB2 was the most common (44.0%, 1,063), followed by RCB3 (19.6%, 474) and RCB1 (10.8%, 260). Among HR-/HER2 + patients, 67% had RCB0/1, while 87% of HR+/HER2- patients had RCB2/3. Higher RCB was significantly associated with worse overall survival (

SUBMITTER: Lee SY 

PROVIDER: S-EPMC12015579 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature