منابع مشابه
JAK2 exon 12 mutations in polycythemia vera or idiopathic erythrocytosis.
JAK2 exon 12 mutations were detected in 4 out of 20 polycythemia vera and idiopathic erythrocytosis V617F-negative patients and were only present in the myeloid lineage. Initial hematologic data of these patients differ from those of V617F-positive patients, but there is no difference in thrombotic development and myelofibrotic transformation.
متن کاملJAK2 exon 12 mutations in polycythemia vera and idiopathic erythrocytosis.
BACKGROUND The V617F mutation, which causes the substitution of phenylalanine for valine at position 617 of the Janus kinase (JAK) 2 gene (JAK2), is often present in patients with polycythemia vera, essential thrombocythemia, and idiopathic myelofibrosis. However, the molecular basis of these myeloproliferative disorders in patients without the V617F mutation is unclear. METHODS We searched f...
متن کاملIdiopathic erythrocytosis: a disappearing entity.
Erythrocytosis results when there is an increased red cell mass and thus an increased hemoglobin. The causes can be divided into primary intrinsic defects of the erythroid progenitor cell and secondary defects, where factors external to the erythroid compartment are responsible. Both can then be further divided into congenital and acquired categories. Congenital causes include mutations of the ...
متن کاملThe frequency of JAK2 exon 12 mutations in idiopathic erythrocytosis patients with low serum erythropoietin levels.
BACKGROUND AND OBJECTIVES Idiopathic erythrocytosis (IE) is characterized by erythrocytosis in the absence of megakaryocytic or granulocytic hyperplasia, and is associated with variable serum erythropoietin (Epo) levels. Most patients with IE lack the JAK2 V617F mutation that occurs in the majority of polycythemia vera patients. Four novel JAK2 mutant alleles have recently been described in pat...
متن کاملIdiopathic erythrocytosis and other non-clonal polycythemias.
Idiopathic erythrocytosis (IE) is characterized by an increase of red blood cell mass without an identified cause. Its diagnosis is based on the exclusion of polycythemia vera (PV), secondary acquired polycythemias and various congenital primary and secondary polycythemias. The frequency of IE has been estimated to be 1.1 per 1000 subjects, which is higher than that observed in PV. Heterogeneou...
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ژورنال
عنوان ژورنال: British Journal of Haematology
سال: 2017
ISSN: 0007-1048
DOI: 10.1111/bjh.14555