The phenotypes of different subtypes of MPN can be quite similar, and the phenotypes of MPN can also mimic that of other myeloid neoplasms and even benign hematologic disorders, especially JAK/STAT-unmutated idiopathic erythrocytosis or thrombocytosis (IE/IT) (5). This evidence concerns the gene SOAT1 and myeloproliferative neoplasm.