RT Journal Article SR Electronic T1 Real-world Outcomes in Recurrent/Metastatic Squamous Cell Carcinoma of Head and Neck With Nivolumab: Galician Study JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 1181 OP 1191 DO 10.21873/anticanres.17505 VO 45 IS 3 A1 IGLESIAS, LETICIA A1 VÍLCHEZ, ROCÍO A1 AGUÍN, SANTIAGO A1 GARCÍA, RAMÓN A1 PENA, CAROLINA A1 CARRAL, ALBERTO A1 HUIDOBRO, GERARDO A1 MOLINA, AUREA A1 GÓMEZ, JESÚS GARCÍA A1 COVELA, MARTA A1 COSTA, MARINHA A1 MEDINA, ANA YR 2025 UL http://ar.iiarjournals.org/content/45/3/1181.abstract AB Background/Aim: Real-world evidence regarding the use of nivolumab in metastatic squamous cell carcinoma of head and neck (R/M SCCHN) is limited. This study aimed to describe the clinical characteristics, outcomes, and safety of nivolumab in R/M SCCHN patients treated in routine clinical practice.Patients and Methods: This retrospective, observational study evaluated the efficacy/safety of nivolumab in 116 patients with R/M SCCHN treated at nine centers within the Galician Group of Head and Neck Cancer health network between 2017 and 2019.Results: Basal characteristics of patients included a median age of 60 years, ECOG performance status −2 (14%) and −3 (1%) and a first diagnosis of stage IV a/b/c (74%). Nivolumab was used as first line, second line, and third line therapy in 17%, 66%, and 17% of patients, respectively. After a median follow-up of 14 months (range=1-69 months), the median progression-free survival was 2.30 months (95%CI=1.45-3.14) and the median overall survival was 8.1 months (95%CI=5.93-10.23). Outcomes were better when nivolumab was administered earlier in treatment course. Grade 3/4 adverse events were observed in 21.27% of patients.Conclusion: These findings support the efficacy and safety of nivolumab in the real-world treatment of R/M SCCHN.