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Polycythemia Vera (PV): Diagnosis and Modern Treatment

JAK2-driven myeloproliferative neoplasm with thrombosis and progression risk

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Hematoloji department. Book Appointment →

What is Polycythemia Vera (PV): Diagnosis and Modern Treatment?

Polycythemia vera is a clonal stem cell disorder with JAK2 V617F mutation in over 95 percent of patients and JAK2 exon 12 mutations in most remaining cases.

Diagnosis requires elevated hemoglobin or hematocrit, JAK2 mutation and bone marrow showing trilineage hypercellularity with prominent megakaryocytes.

Subnormal serum erythropoietin level supports the diagnosis.

Major causes of morbidity and mortality include thrombotic events (deep vein thrombosis, pulmonary embolism, stroke, myocardial infarction) and disease progression.

Late complications include myelofibrotic transformation and acute myeloid leukemia, more frequent with age and prior therapies.

Symptoms

Pruritus particularly after warm bath or shower (aquagenic pruritus).
Erythromelalgia with burning pain in hands and feet relieved by cooling.
Headache, dizziness, blurred vision, tinnitus and concentration difficulties.
Abdominal discomfort or fullness from splenomegaly.
Constitutional symptoms include night sweats, fatigue, weight loss and bone pain in advanced disease.

Risk Factors

Older age with median diagnosis around 60 years.
Family history of myeloproliferative neoplasm or related conditions.
JAK2 V617F or exon 12 mutations are central genetic events.
Cardiovascular comorbidities and smoking increase thrombotic risk.
Higher hematocrit, leukocytosis and elevated allele burden correlate with thrombotic and progression risk.

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • New severe headache, vision changes, slurred speech or limb weakness suggests stroke or TIA and requires emergency evaluation.
  • Chest pain, severe shortness of breath or unilateral leg swelling may indicate myocardial infarction or venous thromboembolism.
  • Persistent itch, burning extremities, severe abdominal pain or rapid spleen enlargement warrants prompt assessment.
  • Unexplained fevers, night sweats, weight loss or bone pain need hematology review for transformation.
  • Routine follow-up is essential for monitoring blood counts, symptoms, transfusion needs and treatment toxicities.

Treatment Methods

01
Phlebotomy targets a hematocrit below 45 percent in men and women to reduce thrombotic risk.
02
Low-dose aspirin (75 to 100 mg daily) is recommended unless contraindicated.
03
High-risk patients (age over 60 or prior thrombosis) receive cytoreductive therapy with hydroxyurea as first-line.
04
Pegylated interferon alfa-2a is preferred in younger patients, pregnancy or hydroxyurea intolerance.
05
Ruxolitinib is approved for hydroxyurea-resistant or intolerant disease and effectively controls splenomegaly and constitutional symptoms; ropeginterferon alfa-2b offers durable molecular responses; vaccination, cardiovascular risk reduction and surveillance for transformation are essential.

Which Department to Visit?

You can visit our Hematoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.