Real-World Effectiveness of Afatinib (Gilotrif) Following Immunotherapy in the Treatment of Metastatic, Squamous Cell Carcinoma of the Lung: A Multi-Site Retrospective Chart Review Study in the U.S. (Afatinib post IO) First published 18/08/2020 Last updated 16/10/2026 EU PAS number:EUPAS36813 Study Finalised