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Polycythemia
MONDO:0005571Abnormally high mass or concentration of red blood cells in the blood, either due to an increase in erythropoiesis or a decrease in plasma volume.
Also known as: polycythemia, polycythemia (disease)
99 clinical trials for this condition and its sub-types, 9 tagged with Polycythemia itself.
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Sub-types of Polycythemia
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Familial polycythemia 1 trial · 92 incl. sub-types
8 sub-types
- Acquired polycythemia vera 90 trials
- Erythrocytosis, familial, 4 2 trials
- Chuvash polycythemia 0 trials
- Erythrocytosis, familial, 3 0 trials
- Erythrocytosis, familial, 5 0 trials
- Erythrocytosis, familial, 6 0 trials
- Erythrocytosis, familial, 7 0 trials
- Primary familial polycythemia due to EPO receptor mutation 0 trials
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Secondary polycythemia 2 trials
2 sub-types
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Acquired polycythemia 0 trials
1 sub-type
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Physiological polycythemia 0 trials
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Polycythemia neonatorum 0 trials
Most studied deeper sub-types
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Blood pressure pill may tame thick blood disorder
Disease control Recruiting nowThis study tests if lisinopril, a common blood pressure drug, can lower red blood cell levels in people with polycythemia (too many red blood cells). Researchers will measure changes in hemoglobin, hematocrit, and a hormone called erythropoietin. The trial enrolls 30 adults with …
Phase 4 • Sponsor: Mayo Clinic • Aim: Disease control
Last updated Aug 23, 2026 00:00 UTC
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Sleep apnea machine may also treat blood disorder
Disease control Recruiting nowThis study tests whether using a CPAP machine at night can reduce high red blood cell counts (polycythemia) in people with moderate to severe sleep apnea. Researchers will compare 182 adults who use CPAP plus standard care to those who receive only standard care over 12 months. T…
Phase 4 • Sponsor: Hospital Universitario Ramon y Cajal • Aim: Disease control
Last updated Jun 26, 2026 17:40 UTC
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New drug ZE74-0282 tested in healthy people for first time
Knowledge-focused Recruiting nowThis early-stage study tests a new drug called ZE74-0282 in 40 healthy adults aged 18-55. The main goal is to check its safety and how the body handles it, not to treat any disease. Participants receive either the drug or a placebo, and researchers monitor side effects and drug l…
Phase 1 • Sponsor: Eilean Therapeutics AU Pty Ltd • Aim: Knowledge-focused
Last updated Jul 30, 2026 00:00 UTC
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Hunting the gene behind blood disorders
Knowledge-focused Recruiting nowThis study is looking for the genetic mutation that causes polycythemia (too many red blood cells) and thrombocytosis (too many platelets). Researchers will analyze blood samples from 200 participants to identify the faulty gene. Finding this gene could help design new treatments…
Sponsor: University of Utah • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:00 UTC
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New MRI technique reveals hidden Lung-Heart problems
Knowledge-focused Recruiting nowThis study uses a special type of MRI (called 129Xe gas exchange MRI) to take detailed pictures of how the lungs and heart work together. Researchers want to understand how these images change after treatments like blood transfusions or oxygen therapy. The study involves 125 adul…
Phase 2 • Sponsor: Bastiaan Driehuys • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:01 UTC
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Blood thickness mystery: new study aims to uncover hidden risks in polycythemia patients
Knowledge-focused Recruiting nowThis study looks at how thick the blood is in 160 people with polycythemia (a condition with too many red blood cells). Researchers want to see if thicker blood causes more symptoms like headaches or dizziness, and how it differs between types of polycythemia. No new treatments a…
Sponsor: Hospices Civils de Lyon • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:59 UTC