In contrast to patients with JAK2V617F-positive polycythemia vera, those patients with a JAK2 exon 12 mutation present with platelet counts within the normal range. Furthermore, the bone marrow samples from most JAK2 exon 12 mutation-positive patients lack the prominent clusters of large, bizarre-looking megakaryocytes that characterize classic JAK2V617F-positive polycythemia vera. This study examines the effects on megakaryopoiesis associated with the presence of a JAK2 exon 12 mutation.
Citation: Scott LM (2013) Abnormal Megakaryopoiesis in Patients With A JAK2 Exon 12 Mutation May Be A Non-Cell-Autonomous Phenomenon. J Bone Marrow Res 1:116. doi: 10.4172/2329-8820.1000116