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.

Inclusion Criteria:

Adults, 18 years of age or older, at the time of diagnosis with any solid tumor.
Confirmed NRG1 gene fusion in any solid tumor.
Initiated afatinib or other systemic therapy (in any line of therapy) for treatment of a solid tumor with NRG1 gene fusion on or after 01/01/2017 through 03/31/2020.
Followed up for ≥3 months after initiation of afatinib or other systemic therapy (unless deceased prior to 3 months of follow-up).

Exclusion Criteria:

- Treatment with any Tyrosine kinase inhibitor (TKI)/ErbB-directed therapy other than afatinib