全脑照射和TKIs对不同EGFR基因突变NSCLC脑转移患者的生存影响

摘要

Objective: To compare overall survival (OS) and intracranial progression-free survival (iPFS) effects of whole-brain radiotherapy (WBRT) and tyrosine kinase inhibitors (TKIs) in NSCLC patients with brain metastases (BM) stratified by EGFR mutation status (mutant, wild-type). Methods: We performed a retrospective analysis of 215 NSCLC BM patients diagnosed in January 2013 to January 2015 with known EGFR status and followed up to December 1, 2016. Stratified Kaplan-Meier curves and multivariate Cox models were used to evaluate the effects of WBRT (defined as≥30 Gy, "W") and TKIs (after BM, "T") on OS and iPFS independently and jointly. Two-sided P>0.20 was considered non-significant (ns). Results: In patients with BM, the mean age was 58 years, 52% were female, and 93% had adenocarcinoma. Those with EGFR mutations (114 patients) had "W" (35 patients) and "T" (87 patients) with adjusted hazard ratios (HRs) (P) of 1.135 (ns) and 0.202 (P0.200)和0.202(P0.200)和0.275(P0.200),iPFS:0.272(P=0.012),0.200(P0.200);与"单纯TKIs"组比,"WBRT联合TKIs"组无生存差异,"单纯WBRT"组HR为OS:3.804(P=0.025)和iPFS :3.114(P=0.032).EGFR野生型101例中应用WBRT 43例的OS的MST为11.3(7.1)个月,iPFS的MST为11.2(4.8)个月;"WBRT"调节HR为OS:0.539(P=0.105)和iPFS:0.485(P=0.048).结论:TKIs能提高EGFR基因突变型NSCLC BM生存,但单独或增加WBRT无生存增益;WBRT能提高EGFR基因野生型NSCLC BM的iPFS.