Methylmalonic aciduria and homocystinuria
MONDO:0016826An inborn error of vitamin B12 (cobalamin) metabolism characterized by megaloblastic anemia, lethargy, failure to thrive, developmental delay, intellectual deficit and seizures. There are four complementation classes of cobalamin defects (cblC, cblD, cblF and cblJ) that are responsible for methylmalonic acidemia - homocystinuria (methylmalonic acidemia - homocystinuria cblC, cblD cblF and cblJ).
Also known as: combined defect in adenosylcobalamin and methylcobalamin synthesis, methylmalonic aciduria with homocystinuria, methylmalonic acidemia and homocystinemia
74 clinical trials for this condition and its sub-types.
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Broader categories
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New hope for kids: drug may prevent transplant complications
Disease control Not yet recruitingThis study tests whether adding the drug vorinostat to standard care can prevent graft-versus-host disease (GVHD) in children and young adults (ages 1-26) with non-cancerous blood disorders who are getting a bone marrow transplant. GVHD is a serious complication where donor cells…
Phase: PHASE2 • Sponsor: Sung Won Choi • Aim: Disease control
Last updated Jul 02, 2026 00:00 UTC
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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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Could a vitamin B12 shot help kids with MMA? new trial underway
Disease control Not yet recruitingThis phase III trial tests a vitamin B12 injection (hydroxocobalamin chloride) in 20 children aged 6 months to 18 years with a specific type of methylmalonic acidemia (cobalamin C deficiency). The goal is to see if the injection can normalize levels of certain acids in the blood …
Phase: PHASE3 • Sponsor: CSPC ZhongQi Pharmaceutical Technology Co., Ltd. • Aim: Disease control
Last updated Jun 26, 2026 14:49 UTC
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AI could help spot rare metabolic diseases in newborns
Diagnosis Not yet recruitingThis trial will test an artificial intelligence system designed to interpret routine newborn screening tests for inherited metabolic disorders. Researchers will compare the AI's accuracy to standard manual review by trained staff. The study plans to include 200,000 newborns in Ch…
Phase: NA • Sponsor: The Children's Hospital of Zhejiang University School of Medicine • Aim: Diagnosis
Last updated Jun 27, 2026 09:00 UTC
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Hidden gut parasites could be making malnourished kids sicker
Knowledge-focused Not yet recruitingThis study in Assiut, Egypt, will check 116 children aged 2-15 for intestinal parasites to see if these infections are more common in malnourished kids compared to healthy ones. The goal is to understand how parasites like Giardia and hookworms might cause or worsen malnutrition …
Sponsor: Assiut University • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:01 UTC
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Massive diabetes registry aims to unlock secrets of metabolic disease
Knowledge-focused Not yet recruitingThis 10-year observational study will follow 10,000 adults with diabetes, metabolic disorders, and related conditions like high blood pressure and fatty liver disease. Researchers will collect routine medical data to identify markers of disease severity and activity. The goal is …
Sponsor: IRCCS San Raffaele • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:53 UTC