We reported novel candidate genes (BMPR1B, GNAS, GHR) and regions of copy number variants outside the expected DSD genotype-phenotype correlation, and determined a founder mutation (SRD5A2p.R227Q) in patients with 5α-reductase deficiency.
We present detailed phenotypic and genotypic features of a cohort of 24 subjects from a highly consanguineous population of Saudi Arabia SUBJECTS AND METHODS: We studied the clinical presentation and hormonal profiles of 24 subjects diagnosed with 5-α reductase deficiency and performed genetic testing on DNA isolated from their peripheral blood using polymerase chain reaction and direct sequencing of the SRD5A2.
Mutations in the SRD5A2 gene cause 5-α-Reductase deficiency; although it is an infrequent disorder, it has been reported worldwide, with mutational heterogeneity.
The IVS1-2A>G mutation of the SRD5A2 gene predominates in Greek-Cypriot patients with 5α-reductase deficiency and very likely reflects a founder effect.
DNAs of two 46,XY DSD Indonesian siblings, aged 13 and 18 years old, with clinically suspected of 5-alpha-reductase deficiency and their mother were analysed for molecular defects of SRD5A2 gene.
To analyze the steroid 5-alpha reductase type 2 gene (SRD5A2) in 2 siblings with severe male pseudohermaphroditism suspected to have 5-alpha reductase deficiency in a Turkish family.
In the 20 yr since it was established that impairment of dihydrotestosterone formation is the cause of a rare form of human intersex, a wealth of information has accumulated about the genetics, endocrinology, and variable phenotypic manifestations, culminating in the cloning of cDNAs encoding two 5 alpha-reductase genes and documentation that mutations in the steroid 5 alpha-reductase 2 gene are the cause of 5 alpha-reductase deficiency.
Molecular analysis of the SRD5A2 gene resulted in the identification of 18 mutations in 11 homozygotes, 6 compound heterozygotes, and 4 inferred compound heterozygotes from 23 families with 5 alpha-reductase deficiency.