Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Cell Rep Med. 2024 Jun 18;5(6):101595. doi: 10.1016/j.xcrm.2024.101595. Epub 2024 Jun 4.
Luminal androgen receptor (LAR)-enriched triple-negative breast cancer (TNBC) is a distinct subtype. The efficacy of AR inhibitors and the relevant biomarkers in neoadjuvant therapy (NAT) are yet to be determined. We tested the combination of the AR inhibitor enzalutamide (120 mg daily by mouth) and paclitaxel (80 mg/m weekly intravenously) (ZT) for 12 weeks as NAT for LAR-enriched TNBC. Eligibility criteria included a percentage of cells expressing nuclear AR by immunohistochemistry (iAR) of at least 10% and a reduction in sonographic volume of less than 70% after four cycles of doxorubicin and cyclophosphamide. Twenty-four patients were enrolled. Ten achieved a pathologic complete response or residual cancer burden-I. ZT was safe, with no unexpected side effects. An iAR of at least 70% had a positive predictive value of 0.92 and a negative predictive value of 0.97 in predicting LAR-enriched TNBC according to RNA-based assays. Our data support future trials of AR blockade in early-stage LAR-enriched TNBC.
腔面雄激素受体(LAR)富集型三阴性乳腺癌(TNBC)是一种独特的亚型。AR 抑制剂在新辅助治疗(NAT)中的疗效和相关生物标志物尚待确定。我们测试了 AR 抑制剂恩扎鲁胺(每日口服 120mg)和紫杉醇(每周静脉内 80mg/m)(ZT)联合应用 12 周作为 LAR 富集型 TNBC 的 NAT。入选标准包括免疫组织化学(iAR)检测细胞核 AR 表达至少为 10%,以及多柔比星和环磷酰胺四个周期后超声体积减少小于 70%。共纳入 24 例患者。10 例达到病理完全缓解或残留癌负荷 I。ZT 是安全的,没有意外的副作用。根据基于 RNA 的检测,iAR 至少为 70%预测 LAR 富集型 TNBC 的阳性预测值为 0.92,阴性预测值为 0.97。我们的数据支持未来在早期 LAR 富集型 TNBC 中进行 AR 阻断的试验。