title: Carrier analysis and prenatal diagnosis of congenital adrenal hyperplasia caused by 21-hydroxylase deficiency in Chinese.
abstract: Congenital adrenal hyperplasia (CAH) is a common autosomal recessive disorder mainly caused by defects in the steroid 21-hydroxylase (CYP21) gene. We screened 1,000 healthy people, using a previously developed differential PCR method combined with single-strand conformation polymorphism and amplification-created restriction site methods for the carrier detection of the CYP21 gene deficiency. Our results indicated that the rate of occurrence of the heterozygous CAH carrier was about 12 in 1,000, with a gene frequency of 0.0060 and an incidence frequency of 1 in 28,000 in the Chinese population. In addition, 9 cases of CAH families were performed with prenatal diagnosis. Among them, 3 cases were diagnosed as the severe form, 4 cases carried the heterozygous mutation, and 2 were normal. This is the first report of carrier frequency analysis and prenatal diagnosis of 21-hydroxylase deficiency in Chinese.
authors.affiliation: Department of Medical Research, China Medical College Hospital, Taichung, Taiwan. hhlee@hpd.cmch.org.tw
authors.forename: H H
authors.initials: HH
authors.lastname: Lee
authors.forename: J M
authors.initials: JM
authors.lastname: Kuo
authors.forename: H T
authors.initials: HT
authors.lastname: Chao
authors.forename: Y J
authors.initials: YJ
authors.lastname: Lee
authors.forename: J G
authors.initials: JG
authors.lastname: Chang
authors.forename: C H
authors.initials: CH
authors.lastname: Tsai
authors.forename: B C
authors.initials: BC
authors.lastname: Chung
mesh_terms: D000312:Adrenal Hyperplasia, Congenital / Q000175:diagnosis* / Q000208:ethnology / Q000209:etiology* / Q000235:genetics; D044466:Asian People / Q000235:genetics*; D002681:China; D005260:Female; D005787:Gene Frequency; D006580:Genetic Carrier Screening; D005820:Genetic Testing / Q000379:methods; D006801:Humans; D008297:Male; D009154:Mutation; D016133:Polymerase Chain Reaction; D018807:Polymorphism, Single-Stranded Conformational; D011296:Prenatal Diagnosis; D013255:Steroid 21-Hydroxylase / Q000235:genetics
chemical_list: D013255:Steroid 21-Hydroxylase