Abstract
BackgroundBiomarker assessments for nivolumab monotherapy efficacy in previously treated patients with non‐small cell lung cancer (NSCLC) remain unclear. We evaluated whether body mass index (BMI) and Glasgow prognostic score (GPS) are useful for assessing the efficacy of nivolumab alone as a second‐line treatment in patients with pretreated NSCLC.MethodsData of 99 patients treated with second‐line nivolumab monotherapy for NSCLC between January 2016 and December 2019 were evaluated for prognostic values of BMI and GPS to assess their usefulness in predicting progression‐free survival (PFS) and overall survival (OS).ResultsThe Eastern Cooperative Oncology Group‐performance status (PS) independently predicted the second‐line nivolumab monotherapeutic effect; good PS (0–1) correlated with significantly longer PFS (4.3 vs. 1.9 months, log‐rank; p = 0.0004) and OS (17.7 vs. 4.6 months, log‐rank; p < 0.0001) than poor PS. BMI independently predicted survival, with high BMI (≥22.1 kg/m2) associated with significantly longer OS (19.1 vs. 8.5 months, log‐rank; p = 0.0023) than low BMI (<22.1 kg/m2). However, GPS showed no significant difference for PFS or OS.ConclusionAmong patients with NSCLC treated with nivolumab monotherapy as second‐line treatment, PS was significantly correlated with both PFS and OS and BMI with OS. Thus, BMI could be a useful predictor of survival in these patients.
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