主要研究结果:
• 共纳入379例HR+/HER2-EBC,pCR为17%
• II期的pCR高于III期:21% vs. 9%, P=0.0013
• 导管型的pCR高于小叶型:19% vs. 11%, P=0.049
• 低%ER阳性的pCR高于高%ER阳性(≤66% vs. 66%):35% vs. 9%, P=3.4E-09
• MP-高2的pCR高于MP-高1:31% vs. 11%, P=1.1E-05
• BP-基底样的pCR高于BP-Luminal样:34% vs. 10%, P=1.62E-07
• ImPrint阳性的pCR高于阴性:38% vs. 10%, P=1.64E-09
• 更低%ER者更可能为MP-高2和BP-基底样疾病
• 中位随访4.8年,pCR患者的结局出色,无论临床/分子学特征如何
• 未获得pCR的患者中,MP-高2 & BP-基底样患者的DRFS事件多于MP-高1 & BP-Luminal样患者
缩写:BP=BluePrint;MP=MammaPrint,高1为0~-0.57,高2为
参考文献:
Huppert LA, Wolf D, Yau C, Brown-Swigart L, Hirst GL, Isaacs C, Pusztai L, Pohlmann PR, DeMichele A, Shatsky R, Yee D, Thomas A, Nanda R, Perlmutter J, Heditsian D, Hylton N, Symmans F, Veer LJV', Esserman L, Rugo HS. Pathologic complete response (pCR) rates for patients with HR+/HER2- high-risk, early-stage breast cancer (EBC) by clinical and molecular features in the phase II I-SPY2 clinical trial. Ann Oncol. 2024 Oct 28:S0923-7534(24)04070-5. doi: 10.1016/j.annonc.2024.10.018. Epub ahead of print. PMID: 39477071.