UZLX-GIST3KIT 11 harbored KIT mutation in exon 11 (p.W557_V559delinsF),...Plocabulin treatment resulted in statistically significant tumor regression in UZLX-GIST3KIT 11 and UZLX-GIST9FKIT 11+17. Tumors of UZLX-GIST3KIT 11 treated with plocabulin shrank to 64% of baseline volume (p = 0.02, Wilcoxon matched-pairs signed rank test, WMP),...