The Effect of Post-Mastectomy Radiotherapy in Patients With Metaplastic Breast Cancer: A Propensity Score-Matched Analysis of the SEER Database

被引:6
|
作者
Hu, Jin [1 ]
Tan, Jie [1 ]
Dong, Fang [1 ]
Zhang, Ximeng [1 ]
Ming, Jie [1 ]
Huang, Tao [1 ]
机构
[1] Huazhong Univ Sci & Technol, Union Hosp, Tongji Med Coll, Dept Breast & Thyroid Surg, Wuhan, Peoples R China
来源
FRONTIERS IN ONCOLOGY | 2022年 / 11卷
关键词
radiotherapy; survival; SEER; metaplastic breast cancer; propensity score-matching; LIPOSOMAL DOXORUBICIN; CARCINOMA; PROGNOSIS; OUTCOMES;
D O I
10.3389/fonc.2021.593121
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
BackgroundMetaplastic breast cancer (MBC) is a rare tumor with aggressive biological behavior. This study aimed to evaluate the efficacy of post-mastectomy radiotherapy (PMRT) on patients with low-risk (T1N0M0), intermediate-risk (T1-2N1M0 and T3N0M0), and high-risk (T1-4N2-3M0 and T4N0-1M0) MBC via propensity-score matching (PSM). MethodsWe analyzed information from the Surveillance, Epidemiology, and End Results (SEER) public-use database from 1975 to 2016 for MBC incidence trends and compared overall survival (OS) and breast cancer-specific survival (BCSS) between groups of MBC women diagnosed from 2001 to 2016 using Kaplan-Meier analysis and the multivariate Cox proportional model. PSM was used to make 1:1 case-control matching. ResultsJoinpoint analyses identified 1984 and 2003 as the inflection points among 4,672 patients. 1,588 (42.4%) of the 3,748 patients diagnosed with MBC between 2001 and 2016 received PMRT. According to multivariate analyses, PMRT provided better OS (p < 0.001) and BCSS (p < 0.001) before PSM, and better prognosis after PSM (n = 2528) for patients receiving PMRT (n = 1264) compared to those without PMRT (OS, p < 0.001 and BCSS, p < 0.001). When stratifying the case-control matching patients into low-risk, intermediate-risk, and high-risk groups, PMRT could improve BCSS compared with that in non-PMRT patients in the high-risk groups; it also improved OS in both the intermediate- and high-risk groups. ConclusionsPer findings of the PSM analysis, PMRT could provide better BCSS in high-risk groups, and better OS in intermediate- and high-risk groups.
引用
收藏
页数:9
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