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A mutation c.C2812T in the androgen receptor gene resulting in Pro817Leu substitution may affect dimerization of the androgen receptor and result in androgen insensitivity syndrome.

Abstract：

OBJECTIVE:To conduct clinical, genetic, and molecular diagnostics of two sisters with typical symptoms of complete androgen insensitivity syndrome. DESIGN:Case report. SETTING:Research laboratory at a university of medical science. PATIENT(S):Two patients with 46,XY karyotype and a female phenotype were diagnosed because of primary amenorrhea. Their sister with 46,XX karyotype, her daughter, and five other family members including their mother also were examined. INTERVENTION(S):Orchiectomy, estrogen substitution therapy. MAIN OUTCOME MEASURE(S):Cancer prophylaxis. RESULT(S):Multiple-temperature single-stranded conformation polymorphism and sequence analyses of the androgen receptor gene (AR) revealed a c.C2812T transition in exon 7 in the two sisters. Their mother and the third sister (46,XX) were carriers of the same mutation. This mutation, which previously had never been reported, resulted in Pro817Leu substitution in the ligand-binding domain of the androgen. Computer simulation of structural changes generated by Pro817Leu substitution revealed appreciable conformational changes in the region responsible for dimerization of the receptor. CONCLUSION(S):The novel c.C2812T transition that might impair dimerization of the receptor is responsible for the clinical symptoms of complete androgen insensitivity syndrome in the affected individuals. Molecular analysis of AR proved to be very useful for genetic counseling of the unaffected sister, who was a carrier of the same mutation.

journal_name

Fertil Steril

journal_title

Fertility and sterility

authors

Turek-Plewa J,Eckersdorf-Mastalerz A,Kaluzewski B,Helszer Z,Trzeciak WH

doi

10.1016/j.fertnstert.2005.11.063

subject

Has Abstract

pub_date

2006-06-01 00:00:00

pages

1822.e1-4

issue

6

eissn

0015-0282

issn

1556-5653

pii

S0015-0282(06)00495-X

journal_volume

85

pub_type

杂志文章

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