Abstract

BackgroundLimited information on anticancer therapy for super-elderly patients with non-small-cell lung cancer is available. Immune checkpoint inhibitors offer long-term survival to elderly patients aged ≥65 years with non-small-cell lung cancer. However, the efficacy and safety of immune checkpoint inhibitors in more elderly patients are not well understood. MethodsWe retrospectively evaluated the efficacy and safety of immune checkpoint inhibitors in patients aged ≥85 years with advanced non-small-cell lung cancer at nine centers using the Okayama Lung Cancer Study Group-Immunotherapy Database. ResultsAmong 531 patients who received immune checkpoint inhibitors, 16 were aged ≥85 years (median, 86.5 years; range, 85–93 years). Many had high programmed death-ligand 1 expression and received pembrolizumab as first-line therapy. The objective response rate, median progression-free survival, and median survival time were 25% (95% confidence interval: 1–49), 2.8 months (95% confidence interval: 1.7–4.5), and not reached (95% confidence interval: 4.7–not reached), respectively. Moreover, the 4-year overall survival rate was 60.8% (95% confidence interval: 29.3–81.7), and a long-lasting effect of immune checkpoint inhibitors was observed even in patients aged ≥85 years. The incidence of immune-related and grade ≥3 immune-related adverse events was 32% and 6%, respectively. ConclusionsThe effect and toxicity of immune checkpoint inhibitors for patients aged ≥85 years were acceptable. Immune checkpoint inhibitors may be a treatment option for patients aged ≥85 years.

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