RT Journal Article T1 CheckMate 171: A phase 2 trial of nivolumab in patients with previously treated advanced squamous non-small cell lung cancer, including ECOG PS 2 and elderly populations. A1 Felip, Enriqueta A1 Ardizzoni, Andrea A1 Ciuleanu, Tudor A1 Cobo, Manuel A1 Laktionov, Konstantin A1 Szilasi, Maria A1 Califano, Raffaele A1 Carcereny, Enric A1 Griffiths, Richard A1 Paz-Ares, Luis A1 Duchnowska, Renata A1 Alonso-Garcia, Miriam A1 Isla, Dolores A1 Jassem, Jacek A1 Appel, Wiebke A1 Milanowski, Janusz A1 Van-Meerbeeck, Jan P A1 Wolf, Juergen A1 Li, Ang A1 Acevedo, Angelic A1 Popat, Sanjay K1 Comorbidity K1 Elderly K1 Health status indicators K1 Nivolumab K1 Non-small cell lung cancer AB CheckMate 171 (NCT02409368) is an open-label, multicentre, phase 2 trial of nivolumab in previously treated advanced squamous non-small cell lung cancer (NSCLC), conducted as part of a post-approval commitment to the European Medicines Agency (EMA). We report outcomes from this trial. Patients with Eastern Cooperative Oncology Group performance status (ECOG PS) 0-2 and disease progression during/after ≥1 systemic treatment (≥1 being platinum-based chemotherapy) for advanced or metastatic disease were treated with nivolumab 3 mg/kg every 2 weeks until progression or unacceptable toxicity. The primary end-point was incidence of grade 3-4 treatment-related select adverse events (AEs). Other end-points included overall survival (OS) and safety. Of 811 patients treated, 103 had ECOG PS 2; 278 were aged ≥70 years and 125 were ≥75 years of age. Minimum follow-up was ~18 months. Safety was similar across populations; the most frequent grade 3-4 treatment-related select AEs in all treated patients were diarrhoea (1%), increased alanine aminotransferase (ALT, 1%), pneumonitis (0.7%), colitis (0.6%) and increased aspartate aminotransferase (AST, 0.5%). Median OS was similar in all treated patients and those aged ≥70 and ≥75: 10.0 months, 10.0 months and 11.2 months, respectively. Median OS was 5.2 months in patients with ECOG PS 2. These results suggest that nivolumab is well tolerated and active in patients with advanced, relapsed squamous NSCLC, including the elderly, with OS outcomes consistent with phase 3 data. In patients with ECOG PS 2, nivolumab had similar tolerability, but outcomes were worse, as expected in this difficult-to-treat, poor prognosis population. NCT02409368. PB Elsevier YR 2020 FD 2020-02-03 LK http://hdl.handle.net/10668/15061 UL http://hdl.handle.net/10668/15061 LA en NO Felip E, Ardizzoni A, Ciuleanu T, Cobo M, Laktionov K, Szilasi M, et al. CheckMate 171: A phase 2 trial of nivolumab in patients with previously treated advanced squamous non-small cell lung cancer, including ECOG PS 2 and elderly populations. Eur J Cancer. 2020 Mar;127:160-172 DS RISalud RD Apr 18, 2025