...results from its PLX9486 + sunitinib Phase 1/2 study in patients with advanced gastrointestinal stromal tumors (GIST...These data suggest that treatment with a combination of PLX9486, a type 1 KIT inhibitor with activity against exon 17 mutations, and sunitinib, a type 2 KIT inhibitor with activity against exon 13 mutations, may provide substantial clinical benefit over treatment with type I or type II inhibitors alone.