No increase of JAK2 46/1 haplotype frequency in essential thrombocythemia with CALR mutations: Functional effect of the haplotype limited to allele with JAK2V617F mutation but not CALR mutation

Abstract The true frequency of the JAK2 46/1 haplotype in patients of myeloproliferative neoplasms (MPN) with CALR mutations was unknown. Totally 187 MPN cases with diagnosis of polycythemia vera (PV) and essential thrombocythemia (ET) were recruited. The frequency of 46/1 haplotype was significantly higher in JAK2V617F-positive PV (51%, p