There is some early literature that it might be effective in gastric cancer with certain mutations,but no randomized studies and no guidelines recommendations. There is an ongoing clinical trial: A Pilot Study of Crizotinib in Patients With c-MET Positive Gastric Adenocarcinoma as a Third-line Chemotherapy, NCT02435108.
Aparicio T, Cozic N, de la Fouchardière C, Meriaux E, Plaza J, Mineur L, Guimbaud R, Samalin E, Mary F, Lecomte T, Gomez-Roca C, Haineaux PA, Gratet A, Selves J, Menu Y, Colignon N, Johnson L, Legrand F, Vassal G. The Activity of Crizotinib in Chemo-Refractory MET-Amplified Esophageal and Gastric Adenocarcinomas: Results from the AcSé-Crizotinib Program. Target Oncol. 2021 May;16(3):381-388.
Hou GX, Song BB. Gastric cancer patient with c-MET amplification treated with crizotinib after failed multi-line treatment: A case report and literature review. Math Biosci Eng. 2019 Jun 25;16(5):5923-5930.
.