RT Journal Article SR Electronic T1 Comparison of Dosage of Nivolumab in Efficacy and Safety for Recurrent Metastatic Squamous Cell Carcinoma JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 1607 OP 1613 DO 10.21873/anticanres.15635 VO 42 IS 3 A1 OKADA, TAKURO A1 FUSHIMI, CHIHIRO A1 MATSUKI, TAKASHI A1 OKAMOTO, ISAKU A1 SATO, HIROKI A1 KONDO, TAKAHITO A1 TOKASHIKI, KUNIHIKO A1 KISHIDA, TAKUMA A1 ITO, TATSUYA A1 YAMASHITA, GAI A1 AIHARA, YUSUKE A1 HANYU, KENJI A1 KUSHIHASHI, YUKIOMI A1 MASUBUCHI, TATSUO A1 TADA, YUICHIRO A1 MIURA, KOUKI A1 HARADA, YUKI A1 MOMIYAMA, KAHO A1 YAMASHITA, TAKU A1 OMURA, GO A1 TAKAHASHI, HIDEAKI A1 ORIDATE, NOBUHIKO A1 TSUKAHARA, KIYOAKI YR 2022 UL http://ar.iiarjournals.org/content/42/3/1607.abstract AB Background/Aim: There are no real-world comparative data of nivolumab doses of 3 mg/kg and 240 mg/body for recurrent/metastatic squamous cell carcinoma of the head and neck (R/M SCCHN). We investigated the efficacy and safety of nivolumab in treating recurrent/metastatic squamous cell carcinoma of the head and neck (R/M SCCHN) at different doses using real-world data. Patients and Methods: R/M SCCHN patients who received nivolumab were divided into the 3 mg/kg and 240 mg/body groups and retrospectively examined for efficacy and safety. Results: A total of 199 patients (3 mg/kg and 240 mg/body, 88 and 111 patients, respectively) were included. The 3 mg/kg vs. 240 mg/body groups had similar overall response rates (15% vs. 25, p=0.15), disease control rates (46% vs. 57%, p=0.15), overall survival (9.5 months vs. 10.9 months), and progression-free survival (3.7 months vs. 3.8 months, p=0.95). The incidence of immune-related adverse events was also similar in both groups. Conclusion: In R/M SCCHN patients, nivolumab showed similar efficacy and safety at doses of 3 mg/kg and 240 mg/body.