» Articles » PMID: 37113400

Real‑world Data Indicated That Neoadjuvant Chemotherapy Alone Was Associated with a Higher Risk of Tumor Recurrence in High‑risk Breast Cancer Subgroup Patients

Overview
Journal Oncol Lett
Specialty Oncology
Date 2023 Apr 28
PMID 37113400
Authors
Affiliations
Soon will be listed here.
Abstract

Numerous clinical trials have reported equal effects of tumor control between neoadjuvant chemotherapy (NAC) and adjuvant chemotherapy (AC) in patients with breast cancer (BC). However, this conclusion has not been verified in practice. The present retrospective study evaluated if there were different risk profiles for NAC, AC and their combinative modes on disease-free survival (DFS) in patients with BC using real-world data. All women with primary unilateral Stage I-III BC and first recurrence in 2008-2018 at The Fourth Hospital of Hebei Medical University were retrospectively identified for enrollment. The four modes of chemotherapy administered for primary BC were classified as 'None', 'NAC only', 'NAC+AC' and 'AC only'. One multivariate Cox model was used to estimate the adjusted Hazard Ratio (HR) and P-value. Covariates included age, Easter Cooperative Oncology Group grade, T stage, N stage, pathology, grade, lymphovascular invasion (LVI), BC subtype, number of chemotherapy cycles and other therapies. Amongst 637 patients, who had a mean age of 48.2 years at BC diagnosis and 50.9 years at recurrence, the median DFS by the 'None' (n=27), 'NAC only' (n=47), 'NAC+AC' (n=118) and 'AC only' (n=445) modes were 31.4, 16.6, 22.6 and 28.4 months (P<0.001), respectively. Compared with the 'AC only', adjusted HR (P-value) of the 'None', 'NAC only' and 'NAC+AC' modes on tumor recurrence were 1.182 (0.551), 1.481 (0.037) and 1.102 (0.523), respectively. The adjusted HR of 'NAC only' vs. 'AC only' modes were 1.448 (P=0.157) for locoregional recurrence and 2.675 (P=0.003) for distant recurrence. Stratified analyses further indicated that the 'NAC only' mode was associated with a higher recurrence risk in T3-4, N2-3, LVI-positive, or HER2-negative subgroup patients. In conclusion, NAC alone was associated with a higher risk of tumor recurrence in high-risk BC subgroup patients in real-world data. Patient selection of chemotherapy mode was involved in practice but could not fully explain this finding. The 'inadequate' NAC was highly likely to have accounted for this observation.

References
1.
Mougalian S, Soulos P, Killelea B, Lannin D, Abu-Khalaf M, DiGiovanna M . Use of neoadjuvant chemotherapy for patients with stage I to III breast cancer in the United States. Cancer. 2015; 121(15):2544-52. DOI: 10.1002/cncr.29348. View

2.
Harris L, Fritsche H, Mennel R, Norton L, Ravdin P, Taube S . American Society of Clinical Oncology 2007 update of recommendations for the use of tumor markers in breast cancer. J Clin Oncol. 2007; 25(33):5287-312. DOI: 10.1200/JCO.2007.14.2364. View

3.
Fisher B, Brown A, Mamounas E, Wieand S, Robidoux A, Margolese R . Effect of preoperative chemotherapy on local-regional disease in women with operable breast cancer: findings from National Surgical Adjuvant Breast and Bowel Project B-18. J Clin Oncol. 1997; 15(7):2483-93. DOI: 10.1200/JCO.1997.15.7.2483. View

4.
Caparica R, Brandao M, Piccart M . Systemic treatment of patients with early breast cancer: recent updates and state of the art. Breast. 2019; 48 Suppl 1:S7-S20. DOI: 10.1016/S0960-9776(19)31115-4. View

5.
Reyal F, Hamy A, Piccart M . Neoadjuvant treatment: the future of patients with breast cancer. ESMO Open. 2018; 3(4):e000371. PMC: 5976132. DOI: 10.1136/esmoopen-2018-000371. View