title: Ten novel mutations in the NR5A1 gene cause disordered sex development in 46,XY and ovarian insufficiency in 46,XX individuals.
abstract: BACKGROUND
  Steroidogenic factor-1 (SF-1/NR5A1) is a nuclear receptor that regulates adrenal and reproductive development and function. NR5A1 mutations have been detected in 46,XY individuals with disorders of sexual development (DSD) but apparently normal adrenal function and in 46,XX women with normal sexual development yet primary ovarian insufficiency (POI).
  
  
  OBJECTIVE
  A group of 100 46,XY DSD and two POI was studied for NR5A1 mutations and their impact.
  
  
  METHODS
  Clinical, biochemical, histological, genetic, and functional characteristics of the patients with NR5A1 mutations are reported.
  
  
  METHODS
  Patients were referred from different centers in Spain, Switzerland, and Turkey. Histological and genetic studies were performed in Barcelona, Spain. In vitro studies were performed in Bern, Switzerland.
  
  
  METHODS
  A total of 65 Spanish and 35 Turkish patients with 46,XY DSD and two Swiss 46,XX patients with POI were investigated.
  
  
  RESULTS
  Ten novel heterozygote NR5A1 mutations were detected and characterized (five missense, one nonsense, three frameshift mutations, and one duplication).
  
  
  RESULTS
  The novel NR5A1 mutations were tested in vitro by promoter transactivation assays showing grossly reduced activity for mutations in the DNA binding domain and variably reduced activity for other mutations. Dominant negative effect of the mutations was excluded. We found high variability and thus no apparent genotype-structure-function-phenotype correlation. Histological studies of testes revealed vacuolization of Leydig cells due to fat accumulation.
  
  
  CONCLUSIONS
  SF-1/NR5A1 mutations are frequently found in 46,XY DSD individuals (9%) and manifest with a broad phenotype. Testes histology is characteristic for fat accumulation and degeneration over time, similar to findings observed in patients with lipoid congenital adrenal hyperplasia (due to StAR mutations). Genotype-structure-function-phenotype correlation remains elusive.
authors.affiliation: Pediatric Endocrinology Research Unit, Hospital Vall d’Hebron, Passeig Vall d’Hebron 119, Barcelona 08035, Spain.
authors.forename: N
authors.initials: N
authors.lastname: Camats
authors.forename: A V
authors.initials: AV
authors.lastname: Pandey
authors.forename: M
authors.initials: M
authors.lastname: Fernández-Cancio
authors.forename: P
authors.initials: P
authors.lastname: Andaluz
authors.forename: M
authors.initials: M
authors.lastname: Janner
authors.forename: N
authors.initials: N
authors.lastname: Torán
authors.forename: F
authors.initials: F
authors.lastname: Moreno
authors.forename: A
authors.initials: A
authors.lastname: Bereket
authors.forename: T
authors.initials: T
authors.lastname: Akcay
authors.forename: E
authors.initials: E
authors.lastname: García-García
authors.forename: M T
authors.initials: MT
authors.lastname: Muñoz
authors.forename: R
authors.initials: R
authors.lastname: Gracia
authors.forename: M
authors.initials: M
authors.lastname: Nistal
authors.forename: L
authors.initials: L
authors.lastname: Castaño
authors.forename: P E
authors.initials: PE
authors.lastname: Mullis
authors.forename: A
authors.initials: A
authors.lastname: Carrascosa
authors.forename: L
authors.initials: L
authors.lastname: Audí
authors.forename: C E
authors.initials: CE
authors.lastname: Flück
mesh_terms: D058489:46, XX Disorders of Sex Development / Q000150:complications / Q000235:genetics*; D000293:Adolescent; D001483:Base Sequence; D002648:Child; D002675:Child, Preschool; D004252:DNA Mutational Analysis; D058490:Disorder of Sex Development, 46,XY / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D008969:Molecular Sequence Data; D010641:Phenotype; D017354:Point Mutation / Q000502:physiology; D016649:Primary Ovarian Insufficiency / Q000150:complications / Q000235:genetics*; D054339:Steroidogenic Factor 1 / Q000235:genetics*; D055815:Young Adult
chemical_list: C515057:NR5A1 protein, human; D054339:Steroidogenic Factor 1