Mast cell activation syndrome
MONDO:0100004A clinically defined disease states with a largely unknown morphological background. Acute mast cell activation (MCA) is commonly seen in allergic reactions and often leads to the clinical signs and symptoms of anaphylaxis. Severe or even life‐threatening MCA may occur when the burden of mast cells is high and/or these cells are in an hyperactivated state. Mastocytosis may be associated with mast cell activation syndrome (MCAS).
Also known as: MACS, disorder of mast cell activation, mast cell activation disease
51 clinical trials for this condition and its sub-types.
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Broader categories
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New CAR-T therapy targets antibodies blocking Life-Saving transplants
Disease control Not yet recruitingThis early-stage study tests a new treatment using special immune cells (CAR-T cells) designed to reduce harmful antibodies that can prevent or damage bone marrow transplants. About 18 people with blood diseases who have these antibodies will receive the cells in increasing doses…
Phase: PHASE1, PHASE2 • Sponsor: Chang Yingjun • Aim: Disease control
Last updated Jun 27, 2026 09:10 UTC
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Could a feeding tube after transplant save the gut?
Disease control Not yet recruitingThis study tests whether starting tube feeding right after a stem cell transplant can reduce severe gut graft-versus-host disease (GVHD) in people with blood cancers or disorders. About 112 participants will be randomly assigned to either standard care or early tube feeding. The …
Phase: PHASE2 • Sponsor: University of Nebraska • Aim: Disease control
Last updated Jun 27, 2026 08:09 UTC
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New hope for Tick-Bite survivors: mast cell drugs aim to ease lingering symptoms
Symptom relief Not yet recruitingThis study tests whether medications that calm mast cells (ketotifen and cromolyn) can safely reduce persistent symptoms like fatigue, pain, and brain fog in people who had a tick-borne illness. Fifty adults aged 21-65 will receive either one of these drugs or a standard antihist…
Phase: PHASE2 • Sponsor: University of North Carolina, Chapel Hill • Aim: Symptom relief
Last updated Jun 27, 2026 12:07 UTC
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Long-Term study aims to unlock mystery of joint hypermobility and chronic illness
Knowledge-focused Not yet recruitingThis study will follow 100 health science students for at least 10 years to understand why some people with very flexible joints (hypermobility) develop chronic pain, fatigue, and other health issues while others do not. Researchers will measure balance, heart rate, and quality o…
Sponsor: Clarkson University • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:01 UTC