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| Smith-Lemli-Opitz Syndrome ： ウィキペディア英語版 |
Smith–Lemli–Opitz syndrome
Smith–Lemli–Opitz syndrome (also SLOS, or 7-dehydrocholesterol reductase deficiency) is an inborn error of cholesterol synthesis. It is an autosomal recessive, multiple malformation syndrome caused by a mutation in the enzyme 7-Dehydrocholesterol reductase, or DHCR7. It causes a broad spectrum of effects, ranging from mild intellectual disability and behavioural problems to lethal malformations.
==SLOS phenotype and symptoms==
SLOS can present itself differently in different cases, depending on the severity of the mutation and other factors. Originally, SLOS patients were classified into two categories (classic and severe) based on external behaviours, physical characteristics, and other clinical features. Since the discovery of the specific biochemical defect responsible for SLOS, patients are given a severity score based on their levels of cerebral, ocular, oral, and genital defects. It is then used to classify patients as having mild, classical, or severe SLOS.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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