Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:4.2.1.22 (cystathionine beta-synthase)
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Hereditary homocystinuria due to cystathionine beta-synthase (CBS) deficiency is a rare disease (about 1:20000 in Germany) often complicated by thromboembolism. Single mutations, which affect the C-terminal region of the CBS enzyme, lead to isolated thrombosis without further symptoms typical for homocystinuria such as atherosclerosis, psychomotor retardation, and dislocation of the ocular lenses. In this study, DNA samples of patients with stroke (n = 225) and sinus thrombosis (n = 46) were screened for the most common homocystinuria mutation, CBS 1278T. In each group one homozygous patient was identified. Thus, not only C-terminal mutations but also the most common mutation in classical homocystinuria, CBS 1278T, can lead to isolated thrombophilic events. These data support the hypothesis that homocystinuria is an underdiagnosed disease.
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PMID:Isolated thrombosis due to the cystathionine beta-synthase mutation c.833T>C (1278T). 1451 32