Enhanced Molecular Response in Myeloproliferative Neoplasms with Complete JAK2^V617F Inhibition

Summary: Dunbar, Bowman, and colleagues present here a novel genetic mouse model with inducible and reversible expression of the JAK2^V617F mutation in the endogenous locus. Results from this study clearly demonstrate an absolute requirement for myeloproliferative neoplasm–initiating cells for this mutation in their survival and imply that more efficacious inhibitors could be curative for these patients even in the setting of additional cooperating mutations.