To investigate the effect of progesterone receptor (PR) on the efficacy of first-line aromatase inhibitor (AI) endocrine therapy and progression-free survival (PFS) in patients with estrogen receptor (ER) positive HER-2 negative advanced breast cancer. The clinical data of 198 patients with advanced breast cancer treated in Henan Cancer Hospital from January 2014 to October 2019 were collected. The Chi-square test was used to compare the difference between the two groups, and the Cox regression model was used to analyze the related prognostic factors. The median progression-free survival time ((PFS)) of PR+and PR- patients were 12.5 months and 9.0 months, respectively, and the difference was statistically significant (P=0.004). The clinical benefit rate (CBR) was 81.1% and 63.1%, respectively, and the difference was not statistically significant (P<0.001). PR is an independent prognostic factor of first-line AI endocrine therapy in ER-positive HER-2-negative patients. PR+type breast cancer has a better response to first-line AI endocrine therapy and longer PFS time than PR- type advanced breast cancer.
本研究主要探讨孕激素受体（PR）对雌激素受体阳性（ER+）和人表皮生长因子受体2（HER-2）阴性晚期乳腺癌患者接受芳香化酶抑制剂（AI）治疗的疗效及无疾病进展时间（PFS）的影响。收集2014年1月至2019年10月河南省肿瘤医院收治的198例晚期乳腺癌患者［均为女性，年龄50（27，80）岁］的临床资料，采用χ2检验对比生存的差异；应用Cox回归模型分析相关预后因素。结果显示，PR+、PR-患者的中位PFS分别为12.5个月和9.0个月，两组生存差异有统计学意义（P=0.004）；临床获益（CBR）分别为81.1%和63.1%，差异有统计学意义（P<0.001）。PR+乳腺癌患者的PFS较PR-型乳腺癌患者长，差异有统计学意义（P<0.001）。提示PR是ER+及HER-2阴性患者一线芳AI内分泌治疗的独立预后因素，PR+型较PR-型晚期乳腺癌对一线AI内分泌治疗反应好，PFS时间更长。.