LAUSR

e20541Background: Approximately 3-4% of lung adenocarcinomas express a truncated form of c-Met (c-Metex14) due to mutation-induced exon 14 skipping. c-Metex14 accumulates on the cell surface and is constitutively active with the ability to drive NSCLC. Data suggest that lung adenocarcinomas harboring c-METex14 are sensitive to c-Met kinase inhibitors. The highly selective c-Met inhibitor tepotinib is well tolerated and active at an oral dose of 500 mg QD. This single-arm phase II trial (NCT02864992) is investigating the efficacy and safety of tepotinib in patients (pts) with advanced lung adenocarcinoma harboring METex14. Methods: Adults with stage IIIB/IV lung adenocarcinoma who have failed 1 or 2 lines of systemic therapy, including a platinum doublet-containing regimen, are eligible. Tumors must harbor mutations that are known to cause exon 14 skipping, confirmed by a central laboratory, but not activating EGFR mutations or ALK rearrangements. Pts receive tepotinib 500 mg QD until disease progression, ...