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- Title
Factors Affecting Pathologic Complete Remission in Patients with Hormone Receptor-Positive and Human Epidermal Growth Factor Receptor 2-Negative Breast Cancer Receiving Neoadjuvant Chemotherapy.
- Authors
Choi, Hee Jun; Lee, Jun Ho; Jung, Chang Shin; Lee, Jeong Eon; Jung, Youn Joo; Lee, Seungju; Kang, Seok-Kyung; Kim, Hyun Yul
- Abstract
Introduction: Pathological complete response (pCR) after neoadjuvant chemotherapy (NAC) is associated with improvement in survival outcomes. This study evaluated the pCR in patients with hormone receptor (HR)-positive and human epidermal growth factor receptor 2 (HER2)-negative breast cancer after NAC. Methods: We evaluated 417 patients who were diagnosed with invasive breast cancer and treated with NAC followed by curative surgery between January 2007 and December 2020 and analyzed the pCR for HR-positive and HER2-negative breast cancer. Results: The median age at the time of surgery was 45.4 years, and 9.1% of patients (38 of 417) with HR-positive/HER2-negative status had pCR. Among patients with HR-positive/HER2-negative breast cancer, patients with single HR-positivity had a 20.2% pCR rate, and patients with double HR-positivity had a 4.4% pCR rate. Patients with a high Ki-67 index exhibited a higher pCR rate than those with a lower Ki-67 index (14.5% vs. 3.2%). Patients with single HR-positive and high Ki-67 values exhibited a significantly higher pCR rate than those with double HR-positive and low Ki-67 values (27.8% vs. 2.1%; p < 0.001). Conclusion: NAC could improve prognosis in patients with HR-positive/HER2-negative breast cancer with a single HR-positive and high Ki-67 values.
- Subjects
BREAST cancer prognosis; CANCER chemotherapy; DESCRIPTIVE statistics; COMBINED modality therapy; DISEASE remission; HORMONE receptor positive breast cancer
- Publication
Oncology, 2022, Vol 100, Issue 10, p529
- ISSN
0030-2414
- Publication type
Article
- DOI
10.1159/000526155