與PD-L1表達陰性的患者相比,PD-L1陽性的患者療效更好,如PD-L1≥1%的患者的總緩解率就較PD-L<1%的患者更高(64% vs 31%),但兩者的可信區(qū)間有重疊。
圖 6 未接受過ALK抑制治療的患者療效似乎更好 22名接受450mg塞瑞替尼的患者中有4名患者出現(xiàn)了劑量限制性毒性,300mg組中有2名。最常見的3-4級別不良反應為丙氨酸轉氨酶升高(25 %)、γ-谷氨酰轉移酶升高(22%)、淀粉酶升高(14%)等。兩組患者中皮疹的發(fā)生率均為64%,但450mg組中3級皮疹的發(fā)生率更高(29% vs 14%)。研究認為,塞瑞替尼聯(lián)合納武利尤單抗對ALK重排的NSCLC患者有效,但聯(lián)合治療的毒性也更大。聯(lián)合治療的療效似乎與PD-L1的表達有關,高表達PD-L1的患者療效更好。接下去研究會探索減低毒性的給藥方案并擴大研究的規(guī)模。
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