Hereditary thrombocythemia (HT) has been described as a rare benign disorder caused by mutations in the thrombopoietin (THPO) or the c-Mpl receptor genes.
In a group of 36 Mexican mestizo patients with MPN, we studied five molecular markers: The BCR/ABL1 fusion gene, the JAK2 V617F mutation, the JAK2 exon 12 mutations, the MPLW515L mutation and the MPLW515K mutation; 17 patients with essential thrombocythemia (ET), eight with polycythemia vera (PV), four with primary mielofibrosis (MF), five with undifferentiated MPN, one with primary erythrocytosis and one with familial thrombocytosis.
Interestingly, decreased c-MPL and elevated PRV-1 also were observed in patients with hereditary thrombocythemia (HT) who carry a mutation in the thrombopoietin (TPO) gene.