Researchers from Incyte Corp. and collaborators presented the preclinical profile of INCB-160058, an ATP-competitive small-molecule inhibitor of the JAK2 V617F mutant sparing its wild-type (WT) form, designed for the treatment of JAC2 V617F mutation-positive myeloproliferative neoplasms with potential as a first-in-class JAK2 V617-inhibiting drug.