To evaluate the activity of ponatinib in a gastric tumor model in vivo, mice bearing SNU16 xenografts were dosed orally with ponatinib once daily for 21 days (Fig. 4C)….Ponatinib exhibited a dose-dependent effect on tumor growth, with a dose of 3 mg/kg having no effect, 10 mg/kg inhibiting growth by 56% (P < 0.05), and 30 mg/kg inducing tumor regression by 49%.