General Surgery, Cancer Center, Department of Breast Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China.
Center of Clinical Pharmacology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
Sci Rep. 2024 Nov 2;14(1):26377. doi: 10.1038/s41598-024-78341-2.
PURPOSE: Estrogen receptor-positive (ER+), progesterone receptor-negative (PR-) and human epidermal growth factor receptor 2-negative (HER2-) breast cancer (BC) often developed resistance to endocrine treatment (ET). We aimed to explore (1) the different clinicopathological features between ER+/PR+/HER2- and ER+/PR-/HER2- BC, and (2) whether ER+/PR-/HER2- early BC patients could benefit from adjuvant ET. METHODS: All patients treated for ER+/HER2- early BC who underwent surgery between 2010 and 2021 from a BC database in China were retrospectively examined. The cases followed up for less than six months were excluded. RESULTS: The records of ER+/PR+/HER2- (n = 10843) and ER+/PR-/HER2- BC (n = 1193) cases were reviewed, with median follow-up times of 35.8 and 47.0 months, respectively. Compared with ER+/PR+/HER2- cases, ER+/PR-/HER2- BC occurred more in postmenopausal women (73.1% vs. 52.9%, p = 0.000) and were more likely to be T > 2 cm (40.6% vs. 37.6%, p = 0.048) and Ki67 > 20%+ (48.1% vs. 36.9%, p = 0.000). However, ER+/PR-/HER2- cases had fewer nodal involvement (32.9% vs. 36.9%, p = 0.000). Approximately 82.2% (981/1193) of ER+/PR-/HER2- patients received ET, while approximately 17.8% (212/1193) did not. Compared to patients did not receive adjuvant ET, the ET group had similar disease-free survival (DFS) (HR = 1.33, 95% confidence interval (CI): 0.68-2.59, p = 0.444) and overall survival (OS) (HR = 1.17, 95%CI: 0.37-3.68, p = 0.799). 65.7% of recurrent ER+/PR-/HER2- patients experienced distant relapse (65.7% vs. 48.2% (for ER+/PR + cases), p = 0.011). By comparison, recurrent ER+/PR+/HER2- patients were more likely to experience only local relapse (31.6% vs. 14.9% (for ER+/PR- cases), p = 0.007). CONCLUSIONS: ER+/PR-/HER2- BC was a special subtype with aggressive clinicopathological features and more tend to have distant metastasis rather than nodal involvement or local relapse. ER+/PR-/HER2- early BC did not seem to benefit from adjuvant ET.
目的:雌激素受体阳性(ER+)、孕激素受体阴性(PR-)和人表皮生长因子受体 2 阴性(HER2-)的乳腺癌(BC)通常对内分泌治疗(ET)产生耐药性。我们旨在探讨:(1)ER+/PR+/HER2-和 ER+/PR-/HER2-BC 之间不同的临床病理特征;(2)ER+/PR-/HER2-早期 BC 患者是否能从辅助 ET 中获益。
方法:回顾性分析了 2010 年至 2021 年间在中国 BC 数据库中接受 ER+/HER2-早期 BC 手术治疗的所有患者的病历。排除随访时间不足 6 个月的病例。
结果:共回顾了 ER+/PR+/HER2-(n=10843)和 ER+/PR-/HER2-BC(n=1193)病例,中位随访时间分别为 35.8 个月和 47.0 个月。与 ER+/PR+/HER2-病例相比,ER+/PR-/HER2-BC 更常见于绝经后女性(73.1% vs. 52.9%,p=0.000),且更倾向于 T>2cm(40.6% vs. 37.6%,p=0.048)和 Ki67>20%+(48.1% vs. 36.9%,p=0.000)。然而,ER+/PR-/HER2-病例的淋巴结受累情况更少(32.9% vs. 36.9%,p=0.000)。大约 82.2%(981/1193)的 ER+/PR-/HER2-患者接受了 ET,而大约 17.8%(212/1193)的患者未接受。与未接受辅助 ET 的患者相比,ET 组的无病生存(DFS)(HR=1.33,95%置信区间(CI):0.68-2.59,p=0.444)和总生存(OS)(HR=1.17,95%CI:0.37-3.68,p=0.799)相似。65.7%的复发性 ER+/PR-/HER2-患者发生远处复发(65.7% vs. 48.2%(ER+/PR+病例),p=0.011)。相比之下,复发性 ER+/PR+/HER2-患者更可能仅发生局部复发(31.6% vs. 14.9%(ER+/PR-病例),p=0.007)。
结论:ER+/PR-/HER2-BC 是一种具有侵袭性临床病理特征的特殊亚型,更倾向于远处转移,而不是淋巴结受累或局部复发。ER+/PR-/HER2-早期 BC 似乎不能从辅助 ET 中获益。
BMC Cancer. 2023-12-4
Ann Surg Oncol. 2020-11