JAMA Oncol:肿瘤浸润淋巴细胞(TILs)可能是HER2阳性早期乳腺癌预后指标(NeoALTTO试验)

2015-07-19 MedSci译 MedSci原创

    肿瘤浸润淋巴细胞(TILs)的存在与通过佐剂赫塞汀和化疗改善人表皮生长因子受体2(HER2)阳性早期乳腺癌结果有关。在其他抗HER2药物新辅助化疗及预后的关联组合是未知的。该研究的目的是确定存在曲妥珠单抗,拉帕替尼,或二者组合治疗早期乳腺癌的患者中TILs的存在,病理完全缓解(pCR),和无事件生存率(EFS)终点的联系。    这项NeoALTTO

肿瘤浸润淋巴细胞(TILs)的存在与通过佐剂赫塞汀和化疗改善人表皮生长因子受体2(HER2)阳性早期乳腺癌结果有关。在其他抗HER2药物新辅助化疗及预后的关联组合是未知的。该研究的目的是确定存在曲妥珠单抗,拉帕替尼,或二者组合治疗早期乳腺癌的患者中TILs的存在,病理完全缓解(pCR),和无事件生存率(EFS)终点的联系。

这项NeoALTTO试验(新辅助拉帕替尼和/或曲妥珠单抗治疗优化)在2008年1月5日和2010年5月27日之间随机分配455女性HER2阳性早期乳腺癌患者接受新辅助治疗:曲妥珠单抗,拉帕替尼,或二者组合,6周之后通过每周加入紫杉醇为期12周,手术后进行3个周期的氟尿嘧啶,表阿霉素,环磷酰胺治疗。这项研究的主要终点是乳腺和淋巴结的pCR,EFS为次要终点。在一项前瞻性定义的回顾性分析中研究人员使用在诊断时(治疗前)HE染色核心活检切片评估TILs的概率水平。调整包括PIK3CA基因在内的预后临床病理因素后,通过检测TILs水平来确定它们与疗效终点的联系。

455例患者中,387例(85.1%)肿瘤样本用于目前的分析。TILs水平中位数(四分位数间距[IQR])是12.5%(5.0 % - 30.0 %),在激素受体–阳性样品水平较低(10.0%(5.0 % - 22.5%)VS 激素受体–阴性样品(12.5%(3.0 % - 35.0% ])(P = 0.02)。对于pCR终点,TILs水平大于5 %与较高独立于治疗组的pCR率相关(调整后的比值比,2.60 [ 95 % Cl,1.26-5.39 ];P = 0.01)。中位数(IQR)随访时间为3.77(3.50-4.22)年,TILs每增加1%,就与各治疗组事件率下降3%相关(调整危险比,0.97(95 % Cl,0.95-0.99);P =0.002)。

使用新辅助抗HER2药物或化疗治疗HER2阳性早期乳腺癌,以期达到pCR和EFS终点时,在诊断时TILs的存在是一个独立的,阳性的,预后指标。

原始出处:

Salgado R, Denkert C, Campbell C, Savas P, Nucifero P, Aura C, de Azambuja E, Eidtmann H, Ellis CE, Baselga J, Piccart-Gebhart MJ, Michiels S, Bradbury I, Sotiriou C, Loi S.Tumor-Infiltrating Lymphocytes and Associations With Pathological Complete Responseand Event-Free Survival in HER2-Positive Early-Stage Breast Cancer Treated With Lapatinib and Trastuzumab: A Secondary Analysis of the NeoALTTO Trial. JAMA Oncol. 2015 Jul 1;1(4):448-54.

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    2015-11-12 minlingfeng
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    2016-01-29 shizhenshan
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    2015-07-27 shuizhongyuer

    很有意义

    0

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