Efficacy and safety of nivolumab for advanced gastric cancer patients with poor performance statuses
Abstract Background: Nivolumab has changed the treatment of advanced gastric cancer (AGC). Nivolumab shows better outcomes compared to best supportive care among AGC patients who received at least two prior regimens. However, there are no reliable data regarding AGC patients with poor performance status (PS) who received nivolumab. We investigated the efficacy and safety of nivolumab among AGC patients with poor PS. Methods: We retrospectively collected clinicopathologic data from patients with AGC who underwent nivolumab monotherapy at our institution from October 2017 to June 2019. Results: Forty-nine AGC patients who received nivolumab were assessed. Twenty-seven patients had PS 0 or 1 (Good group) and 22 had PS 2 or 3 (Poor group). The median progression-free survival and overall survival durations were 61 and 180 days in the Good group, respectively, and 36 and 85 days in the Poor group, respectively. The overall survival was significantly shorter in the Poor group (180 vs 85 days, p =0.0255). The disease control rates were 23% and 9% in the Good and Poor groups, respectively. Thirty-three percent of patients experienced immune-related adverse events in the Good group, and 18% in the Poor group. Conclusion: Nivolumab has a modest effect and is feasible as third- or later-line treatment for AGC patients.