Homocystinuria
MONDO:0004737An autosomal recessive inherited metabolic disorder caused by mutations in the CBS, MTHFR, MTR, and MTRR genes. It is characterized by abnormalities in the methionine metabolism and is associated with deficiency of cystathionine synthase. It results in the accumulation of homocysteine in the serum. It may affect the cardiovascular, musculoskeletal and the central nervous systems.
Also known as: homocystinuria, homocystinuria (disease), CBS deficiency, cystathionine beta synthase deficiency, cystathionine synthase deficiency
11 clinical trials for this condition and its sub-types.
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Broader categories
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New medical food tolerability study for rare metabolic conditions
Disease control CompletedThis study looked at whether a special medical food called Express Plus is acceptable for children and adults with certain inherited metabolic disorders like PKU and maple syrup urine disease. Over 28 days, 28 participants tried the product and reported how well they liked it, ho…
Phase: NA • Sponsor: Vitaflo International, Ltd • Aim: Disease control
Last updated Jun 27, 2026 12:34 UTC
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Blood marker may flag surgery danger for seniors
Knowledge-focused CompletedThis study looked at nearly 30,000 older adults (65+) having non-cardiac surgery to see if levels of homocysteine, a natural amino acid, could predict serious complications like kidney injury or death. Researchers measured homocysteine before and after surgery. The goal was to se…
Sponsor: Chinese PLA General Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:31 UTC