O-020Activity of larotrectinib in patients with TRK fusion GI malignancies. (20th June 2018) - Nathenson, M; Demetri, G; Lassen, U; Hong, D; Boni, V; Deeken, J; Dowlati, A; Cox, M; Ku, N; Cruickshank, S; Qamoos, H; Drilon, A