GSTP1 and neoplasm: Ezatiostat is a tripeptide glutathione analog with isoform‐specific inhibitory action on GSTP1 catalytic activity, and has been used in pre‐clinical models and clinical studies of patients with myelodysplasia to stimulate normal myeloblasts proliferation.[40] Our study showed in organoid‐derived xenografts, ezatiostat alone led to significant tumor reduction at comparable extent and tempo as crizotinib treatment, while co‐treatment resulted in significantly augmented tumor shrinkage.