Abstract
We assessed the efficacy of immune checkpoint inhibitors (ICIs) in older patients because of the limited information regarding these patients. We retrospectively analyzed 66 consecutive patients ≥70 years old with advanced non-small cell lung cancer (NSCLC). A total of 31 patients received ICIs (ICIs group) and 35 patients received only cytotoxic regimens (No ICIs group). Patients with squamous cell carcinoma who received ICIs had better overall survival (OS) than those who did not (9.7 versus 4.7 months, p=0.027). In multivariate analysis, treatment with ICIs [hazard ratio (HR)=0.54, 95% confidence interval (CI)=0.30-0.98, p=0.044], good performance status (HR=0.30, 95%CI=0.16-0.57, p=0.0003), and histology other than squamous cell carcinoma (HR=0.41, 95%CI=0.19-0.83, p=0.014) were significantly favorable factors for OS. ICIs may be effective for older patients with NSCLC, especially squamous cell carcinoma patients.
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