RT Journal Article SR Electronic T1 Efficacy of PD-1 Inhibitors in Older Non-small Cell Lung Cancer Patients JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 923 OP 928 DO 10.21873/anticanres.14025 VO 40 IS 2 A1 YUKIKO NAKAMURA A1 KAZUHITO MIYAZAKI A1 NAOTO AIKO A1 YUKI MISUMI A1 YOKO AGEMI A1 YURI TANIGUCHI A1 MARI ISHI A1 TSUNEO SHIMOKAWA A1 HIROAKI OKAMOTO A1 TAKEHARU YAMANAKA YR 2020 UL http://ar.iiarjournals.org/content/40/2/923.abstract AB Background/Aim: We assessed the efficacy of immune checkpoint inhibitors (ICIs) in older patients because of the limited information regarding these patients. Patients and Methods: 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). Results: 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. Conclusion: ICIs may be effective for older patients with NSCLC, especially squamous cell carcinoma patients.