Predictive Factors for Poor Progression-free Survival in Patients with Non-small Cell Lung Cancer Treated with Nivolumab

Background: Nivolumab has shown promising effects in patients with non-small-cell lung cancer (NSCLC) as a second-or later-line treatment. This study aimed to identify patients who would not experience any benefit from nivolumab treatment. Materials and Methods: In this study, data for 201 patients treated with nivolumab during 17 December 2015 to 31 July 2016 at three respiratory medical centers in Japan were retrospectively reviewed. We collected clinical data at the time of nivolumab treatment commencement. We investigated the relationship between progression-free survival (PFS) and patient characteristics. Results: In both univariate and multivariate analysis, performance status (PS) score >= 2, steroid use at baseline and lactate dehydrogenase (LDH) level >240 IU/l were significantly associated with poor PFS (all p<0.05). Conclusion: PS score >= 2, steroid use at baseline and a high LDH level were predictive of poor PFS in patients with NSCLC treated with nivolumab. Careful monitoring is recommended for treating such patients with nivolumab (UMIN-ID: UMIN000025908).