We show that the Yes-associated protein (Yap) inhibitor verteporfin blocks tumor growth of Gq/11-mutated UM cells….In a subcutaneous xenograft mouse model, UM cells (92.1, GqQ209L) were able to form solid tumors in immunocompromised mice….YAP inhibition suppresses the growth of uveal melanoma cells bearing GNAQ or GNA11 mutations.