83P Analysis of predictive factors in non-small cell lung cancer patients treated with nivolumab

Abstract Background Immune checkpoint inhibitors (ICI) have been established as a novel strategy for non-small cell lung cancer (NSCLC). However, definitive biomarkers that can predict response to ICI therapy remains established. Some prostate factors are suggested, Neutrophile-lymphocyte ratio (NLR), advanced lung cancer inflammation index (ALI), Lung Immune Prognostic Index (LIPI), then we investigate their efficiency. Methods The medical records of consecutive 296 patients with NSCLC who were treated with nivolumab at Kinki-chuo Chest Medical Center between December 17, 2015 and December 31, 2018 were collected. Nivolumab was the only ICI validated for advanced NSCLC in a second-line treatment setting. We investigated the relationship between median progression free survival (PFS) and already known prognostic factors (NLR, ALI, LIPI and so on). Results The median age was 70 (range, 40-90) years. 206 patients were male, and 224 patients were good PS group (PS 0-1). The median PFS was 3.0 months in all patients. The median PFS was 4.7 (NLR Conclusion NLR, ALI and LIPI score have the potential to be predictive factors of ICI response in NSCLC patients. Legal entity responsible for the study The authors. Funding Has not received any funding. Disclosure A. Tamiya: Research grant / Funding (self): Taiho; Research grant / Funding (self): pfizer; Research grant / Funding (self): AstraZeneca; Research grant / Funding (self): Ono pharmaceutical; Research grant / Funding (self): Bristol-Myers Squibb; Research grant / Funding (self): Chugai pharmaceutical; Research grant / Funding (self): Eli Lilly; Research grant / Funding (self): Boehringer Ingelheim; Research grant / Funding (self): MSD; Research grant / Funding (self): Kissei. S. Atagi: Research grant / Funding (self): Ono pharamaceutical; Research grant / Funding (self): Bristol-Myers Squibb; Research grant / Funding (self): Pfizer; Research grant / Funding (self): Taiho; Research grant / Funding (self): Chugai pharmaceutical; Research grant / Funding (self): AstraZeneca; Research grant / Funding (self): Eli Lilly; Research grant / Funding (self): Boehringer Ingelheim; Research grant / Funding (self): Yakult pharmaceutical; Research grant / Funding (self): MSD. All other authors have declared no conflicts of interest.