Polycythemia vera: gender-related phenotypic differences.
Summary of "Polycythemia vera: gender-related phenotypic differences."
In polycythemia vera, gender has recently been shown to influence the JAK2(V617F) allele burden, but its effect on the disease phenotype is unknown. This issue was investigated using the database of the European Collaboration on Low-dose Aspirin in Polycythemia Vera (ECLAP) Study. The ECLAP Study recruited 1,638 polycythemic subjects and followed for 2.7 ± 1.3 years. At study entry, men, compared to women, had a higher prevalence of myocardial infarction (11.3 vs. 5.8%; P < 0.0001) and peripheral arterial disease (6.1 vs. 2.9%; P < 0.05) while a history of venous thrombosis was more common in women (11.4 vs. 7.9%, P = 0.016). Among 234 venous thrombosis, there were 39 splanchnic vein thromboses (33 extra-hepatic portal vein thromboses and 6 Budd-Chiari syndromes). Most of these events occurred as an early disease presentation in young female subjects. Women, compared to men, had higher platelet counts (average value 430 ± 213 vs. 375 ± 201 × 10(9)/L; P < 0.0001) and lower hematocrits (0.46 ± 0.06 vs. 0.48 ± 0.06 l/l; P < 0.0001). Cholesterol plasma level, available in 995 subjects (61%), was lower in male patients (180.8 ± 43.1vs. 196 ± 46.6 mg/dl; P < 0.0001). During follow-up there were 205 major thromboses confirming an high incidence of myocardial infarction in men although not statistically significant (1.2 vs. 0.6 cases per 100 person-years; P > 0.05). These data show several gender-related differences both in the thrombotic diathesis and in the prevalence of vascular risk factors of PV patients.
Institute of Internal Medicine and Geriatrics, Haemostasis Research Center, Catholic University School of Medicine, Largo AgostinoGemelli 8, 00168, Rome, Italy, firstname.lastname@example.org.
This article was published in the following journal.
Name: Internal and emergency medicine
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21660494
- DOI: http://dx.doi.org/10.1007/s11739-011-0634-3
Chorea is a rare complication of polycythemia. We report the case of a 70 year-old woman whose polycythemia vera (PV), with Janus Kinase-2 (JAK2) mutation, presented as chorea. Chorea resolved quickly...
Patients with essential thrombocythemia may carry JAK2 (V617F), an MPL substitution, or a CALR mutation. We studied biologic and clinical features of essential thrombocythemia according to JAK2 or CAL...
Allogenic hematopoietic stem cell transplantation in patients with polycythemia or essential thrombocythemia transformed to myelofibrosis or acute myeloid leukemia: report from the MPN subcommittee of the Chronic Malignancies Working Party of the European Group for Blood and Marrow Transplantation.
The clinical course of polycythemia vera and essential thrombocythemia is potentially associated with long-term severe complications, such as evolution to myelofibrosis or acute myeloid leukemia. Allo...
Extramedullary hematopoiesis is characterized by the presence of hematopoietic tissue outside the bone marrow. Extrathoracic extramedullary hematopoiesis is a rare and usually asymptomatic condition....
The purpose of this research study is to evaluate the safety and effectiveness of patients with Polycythemia Vera treated with Gleevec.
The purpose of this study is to evaluate the safety and tolerability of the JAK2 inhibitor XL019 administered orally in adults with Polycythemia Vera.
The purpose of this study is to determine the activity of Glivec 400 mg po daily, as single agent, in inducing a haematological response in Polycythemia Vera. The patients will be asked t...
The primary objective of this study is to determine the overall response rate to erlotinib in patients with polycythemia vera (PV). Response rate will be assessed by improvement in the com...
The purpose of this project is to find genes whose mutations cause Polycythemia Vera, Essential Thrombocythemia and Primary Myelofibrosis.
Medical and Biotech [MESH] Definitions
The techniques used to draw blood from a vein for diagnostic purposes or for treatment of certain blood disorders such as erythrocytosis, hemochromatosis, polycythemia vera, and porphyria cutanea tarda.
The phenotypic and genotypic differences among individuals in a population.
Mental disorders related to sexual dysfunction, paraphilias, and gender identity disorders.
A myeloproliferative disorder of unknown etiology, characterized by abnormal proliferation of all hematopoietic bone marrow elements and an absolute increase in red cell mass and total blood volume, associated frequently with splenomegaly, leukocytosis, and thrombocythemia. Hematopoiesis is also reactive in extramedullary sites (liver and spleen). In time myelofibrosis occurs.
A person's concept of self as being male and masculine or female and feminine, or ambivalent, based in part on physical characteristics, parental responses, and psychological and social pressures. It is the internal experience of gender role.