Abstract
Abstract Background In December 2015, nivolumab was approved as treatment for previously treated NSCLC irrespective of PD-L1 expression or histology in Japan. There are few reports that include real-world data on large-scale cohorts of patients with special backgrounds from Japan. Method Data from patients who initiated nivolumab treatment from April 1, 2016 to December 31, 2016 were collected at 23 regional medical institutions across Japan. Here we report retrospective analysis of all 901 pts data and focus on effectiveness and safety in special subgroups of the Japanese NSCLC patients, from a multicenter, observational study; CA209-9CR (NCT03273790). Result Patients with EGFR mutations showed significantly shorter PFS as compared to EGFR wild-type patients. Among other special groups, 316 pts with high blood pressure, in which 272 pts was on antihypertensive, showed superior ORR as compared to 585 pts with normal pressure at baseline. Safety analysis showed higher pulmonary toxicity in patients with pulmonary infection at baseline and higher hepatotoxicity in a group of pts infected with hepatitis virus. In this presentation, further analysis on the other subgroups will be presented.
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