{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,18]],"date-time":"2025-10-18T10:23:18Z","timestamp":1760782998287},"reference-count":34,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2013,1,2]],"date-time":"2013-01-02T00:00:00Z","timestamp":1357084800000},"content-version":"vor","delay-in-days":1827,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Andrology"],"published-print":{"date-parts":[[2008,1,2]]},"abstract":"<jats:p><jats:bold>ABSTRACT: <\/jats:bold> Steroid 5\u03b1\u2010reductase (5\u03b1R) deficiency (OMIM number #264600) is a rare 46,XY disorder of sex differentiation caused by mutations in the 5\u03b1R type 2 gene (<jats:italic>SRD5A2<\/jats:italic>) resulting in dihydrotestosterone deficiency during fetal development. We report on the analysis of the <jats:italic>SRD5A2<\/jats:italic> gene in 6 unrelated 46,XY Italian patients with external genitalia morphology ranging from predominantly female to nearly completely male. Three subjects were seen and assessed at birth, 1 patient was referred to us before puberty, and 2 at postpubertal age. Six different causative mutations (5 missense and 1 nonsense) and a rare polymorphism were identified. Four patients presented homozygous single\u2010base substitutions. These <jats:italic>SRD5A2<\/jats:italic> mutations were located in exon 2 (variant Cys133Gly), exon 4 (Gly196Ser and Ala207Asp) and exon 5 (Tyr235Phe). A fifth subject was a compound heterozygote who carried a nonsense mutation in exon 1 (Trp53X) and a second <jats:italic>SRD5A2<\/jats:italic> alteration in exon 5 (Tyr235Phe). The final patient presented a mutation in only 1 allele (Gly34Trp) together with the Ala49Thr variant. The molecular characterization of these patients made it possible to identify novel mutations and to confirm, before gender assignment or any surgical approach, the suspected 5\u03b1R deficiency in 2 newborns, 1 of whom had inconclusive hormonal data. 5\u03b1R deficiency in subjects without parental consanguinity and the presence of compound heterozygotic patients suggest that <jats:italic>SRD5A2<\/jats:italic> mutations carrier frequency may be higher than previously thought.<\/jats:p>","DOI":"10.2164\/jandrol.107.002592","type":"journal-article","created":{"date-parts":[[2007,12,21]],"date-time":"2007-12-21T23:52:44Z","timestamp":1198281164000},"page":"20-28","source":"Crossref","is-referenced-by-count":38,"title":["Molecular Characterization of 6 Unrelated Italian Patients With 5\u03b1\u2010Reductase Type 2 Deficiency"],"prefix":"10.1002","volume":"29","author":[{"given":"F.","family":"Baldinotti","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Majore","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Fogli","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G.","family":"Marrocco","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.","family":"Ghirri","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Vuerich","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Tumini","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B.","family":"Boscherini","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Vetri","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Scommegna","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R.","family":"Rinaldi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.","family":"Simi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.","family":"Grammatico","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2013,1,2]]},"reference":[{"key":"e_1_2_5_2_1","first-page":"578","article-title":"Association between two polymorphisms in the SRD5A2 gene and serum androgen concentrations in British men","volume":"12","author":"Allen NE","year":"2003","journal-title":"Cancer Epidemiol Biomarkers Prev"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/354159a0"},{"key":"e_1_2_5_4_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-2265.1997.800904.x"},{"key":"e_1_2_5_5_1","doi-asserted-by":"publisher","DOI":"10.1210\/jcem-71-2-318"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10508-005-4339-4"},{"issue":"5","key":"e_1_2_5_7_1","first-page":"11","article-title":"Multidisciplinary diagnostic protocol: ambiguous genitalia in neonatal age. 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