The Smith-Lemli-Opitz syndrome with a G303R/R352W mutation: In an extremely irritable child responsive to cholesterol supplementation

Smith-Lemli-Opitz syndrome(SLOS) is a hereditary disorder of cholesterol biosynthesis. It is characterized by growth deficiency, mental retardation and multiple congenital anomalies, including a typical facial appearance, cleft palate, syndactyly, and a variety of central nervous system and/or major congenital malformations. There are very few reports of the Smith-Lemli-Opitz syndrome in Korean children. Here, we report on a girl with a G303R/R352W mutation. The patient was extremely irritable; assessment of the severity of the irritability included severity scoring and the amount of sleep. Cholesterol supplementation was started with egg yolks, and the irritability improved.