Exploratory Analysis of Nivolumab Effectiveness with Lab Data in NSCLC pts in Japan: A Multicenter-Retrospective Study

Abstract

Background: In December 2015, nivolumab was approved for previously treated advanced NSCLC irrespective of PD-L1 expression or histology in Japan. Real-world data can provide insights beyond the clinical trial, and in this analysis we study a large Japanese patient cohort. Methods: Data for 901 patients who initiated nivolumab treatment for advanced NSCLC from April 1, 2016 to December 31, 2016 were collected at 23 regional medical institutions across Japan, including clinical laboratory data before and all the available data during nivolumab treatment. Here we report an exploratory analysis on the association of nivolumab effectiveness with the clinical laboratory data of the Japanese advanced NSCLC patients from a multicenter, observational study; CA209-9CR (NCT03273790). Results: Analysis on association of objective response rate (ORR) with each clinical laboratory data at baseline among responders and non-responders suggested that neutrophils, lymphocytes, neutrophil/lymphocyte ratio (NLR), albumin, sodium, CYFRA, and uric acid at baseline were associated with significantly improved ORR. Further analyses on those multiple factors are planned to identify associations with improved outcome of with nivolumab treatment beyond ORR.