{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T01:37:20Z","timestamp":1790473040827,"version":"4.1.0"},"reference-count":79,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2021,7,30]],"date-time":"2021-07-30T00:00:00Z","timestamp":1627603200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Diagnostics"],"abstract":"<jats:p>Differences in sex development (DSD) in patients with 46,XX karyotype occur by foetal or postnatal exposure to an increased amount of androgens. These disorders are usually diagnosed at birth, in newborns with abnormal genitalia, or later, due to postnatal virilization, usually at puberty. Proper diagnosis and therapy are mostly based on the knowledge of normal development and molecular etiopathogenesis of the gonadal and adrenal structures. This review aims to describe the most relevant data that are correlated with the normal and abnormal development of adrenal and gonadal structures in direct correlation with their utility in clinical practice, mainly in patients with 46,XX karyotype. We described the prenatal development of structures together with the main molecules and pathways that are involved in sex development. The second part of the review described the physical, imaging, hormonal and genetic evaluation in a patient with a disorder of sex development, insisting more on patients with 46,XX karyotype. Further, 95% of the etiology in 46,XX patients with disorders of sex development is due to congenital adrenal hyperplasia, by enzyme deficiencies that are involved in the hormonal synthesis pathway. The other cases are explained by genetic abnormalities that are involved in the development of the genital system. The phenotypic variability is very important in 46,XX disorders of sex development and the knowledge of each sign, even the most discreet, which could reveal such disorders, mainly in the neonatal period, could influence the evolution, prognosis and life quality long term.<\/jats:p>","DOI":"10.3390\/diagnostics11081379","type":"journal-article","created":{"date-parts":[[2021,7,30]],"date-time":"2021-07-30T12:59:24Z","timestamp":1627649964000},"page":"1379","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["46,XX DSD: Developmental, Clinical and Genetic Aspects"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4364-7181","authenticated-orcid":false,"given":"Camelia","family":"Alkhzouz","sequence":"first","affiliation":[{"name":"Mother and Child Department, \u201cIuliu Hatieganu\u201d University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania"},{"name":"Genetic Department, Clinical Emergency Hospital for Children Cluj-Napoca, 400370 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simona","family":"Bucerzan","sequence":"additional","affiliation":[{"name":"Mother and Child Department, \u201cIuliu Hatieganu\u201d University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania"},{"name":"Genetic Department, Clinical Emergency Hospital for Children Cluj-Napoca, 400370 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria","family":"Miclaus","sequence":"additional","affiliation":[{"name":"Genetic Department, Clinical Emergency Hospital for Children Cluj-Napoca, 400370 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9297-9871","authenticated-orcid":false,"given":"Andreea-Manuela","family":"Mirea","sequence":"additional","affiliation":[{"name":"Genetic Department, Clinical Emergency Hospital for Children Cluj-Napoca, 400370 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8777-0689","authenticated-orcid":false,"given":"Diana","family":"Miclea","sequence":"additional","affiliation":[{"name":"Mother and Child Department, \u201cIuliu Hatieganu\u201d University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania"},{"name":"Molecular Science Department, \u201cIuliu Hatieganu\u201d University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,7,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4043","DOI":"10.1210\/jc.2018-01865","article-title":"Congenital adrenal hyperplasia due to steroid 21-hydroxylase deficiency: An endocrine society* clinical practice guideline","volume":"103","author":"Speiser","year":"2018","journal-title":"J. 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