探究氟维司群在绝经后HR+转移性乳腺癌真实患者群体中应用氟维司群的疗效和安全性。
乳腺癌是女性最常见和死亡率最高的恶性肿瘤[1]。其中HR+/HER2-乳腺癌约占全部患者的70%[2],内分泌治疗是HR+/HER2-晚期乳腺癌患者的主要治疗选择,其治疗目标包括延长生存率、维持生活质量和尽可能延长至首次化疗时间。尽管内分泌治疗的疗效已得到证实,但仍有三分之一的患者将产生耐药性,进而出现疾病进展。近年来,CDK4/6抑制剂联合内分泌治疗已经成为HR+/HER2-晚期乳腺癌患者的一线或二线标准治疗选择[3]。然而,仍有许多患者由于合并症、老龄因素或额外毒性等原因,仅能接受内分泌治疗。
氟维司群是一种选择性雌激素受体下调剂(SERD),既往几项Ⅲ期临床试验已证实了氟维司群单药或联合其他药物治疗HR+/HER2-晚期乳腺癌的疗效和安全性。并且也有研究报道了氟维司群一线治疗HR+/HER2-晚期乳腺癌的真实世界研究数据,进一步丰富了氟维司群应用于临床实践的循证医学证据。现将一项来自西班牙乳腺癌患者的真实世界主要研究结果梳理如下[4],以飨读者。
患者和方法
研究结果
139例患者可用于安全性评估,其中93例患者(66.9%)共报告了553例AE。12例患者(8.6%)报告了14例与治疗无关的严重AE。最常见的AE包括:肌肉骨骼及结缔组织疾病(53例患者,38.1%)、乏力(48例,34.5%)、注射部位反应(30例,21.6%)、恶心(18例,12.9%)、食欲下降(18例,12.9%)和腹泻(15例,10.8%)。32例AE(5.8%)与研究药物相关:注射部位反应或超敏反应(7);乏力(7);胃肠系统疾病(6);各种肌肉骨骼及结缔组织疾病(3);血液及淋巴系统疾病(2);呼吸系统、胸及纵隔疾病(2);头痛(1);疲乏(1);心动过速(1);甲沟炎(1);食欲下降(1)。1例患者死于与氟维司群无关的严重AE(5级咯血)。
图4. 安全性数据
讨论与思考
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Wang JY, Cai L, Song YQ, et al.Clinical efficacy of fulvestrant versus exemestane as first-line therapies for Chinese postmenopausal ER+/HER2-advanced breast cancer (FRIEND study),European Journal of Cancer,2023.
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