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Sarcosinemia (SAR), also called hypersarcosinemia and SARDH deficiency, is a rare autosomalrecessivemetabolic disorder characterized by an increased concentration of sarcosine in blood plasma and urine ("sarcosinuria"). It can result from an inborn error of sarcosine metabolism, or from severe folate deficiency related to the folate requirement for the conversion of sarcosine to glycine. It is thought to be a relatively benign condition.
Cause
Sarcosinemia has an autosomal recessive pattern of inheritance.
The disease is inherited in an autosomal recessive manner, which means the defective gene responsible for the disorder is located on an autosome (chromosome 9 is an autosome), and two copies of the defective gene (one inherited from each parent) are required in order to be born with the disorder. The parents of an individual with an autosomal recessive disorder both carry one copy of the defective gene, but usually do not experience any signs or symptoms of the disorder.
Diagnosis
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Treatment
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^ Brunialti AL, Harding CO, Wolff J, Guénet JL (1996). "The mouse mutation sarcosinemia (sar) maps to chromosome 2 in a region homologous to human 9q33-q34". Genomics. 36 (1): 182–4. doi:10.1006/geno.1996.0442. PMID8812433.
