{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,7,9]],"date-time":"2023-07-09T15:10:58Z","timestamp":1688915458551},"reference-count":37,"publisher":"The Endocrine Society","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1998,6,1]]},"abstract":"<jats:p>We sought to determine the concordance of the phenotype and genotype in a kindred with classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency. The variation in phenotypic expression within this family underscores the difficulty of establishing the diagnosis in the absence of newborn screening, even with a heightened index of suspicion.<\/jats:p><jats:p>Steroidogenic profiles were obtained for the three affected siblings. The available clinical history of the two affected aunts was retrieved. Genotyping was performed on several members of the kindred. Detailed sequencing of the entire CYP21 gene of two clinically dissimilar subjects in this family was undertaken to explore the possibility of other mutations or polymorphisms.<\/jats:p><jats:p>PCR with ligase detection reaction analysis of CYP21 revealed that the affected family members III-2, III-3, III-4, II-3, and II-4, all were compound heterozygotes carrying the intron 2 point mutation known to interfere with splicing (nucleotide 656 A to G) and the exon 4 point mutation causing a nonconservative substitution of asparagine for isoleucine at codon 172 (I172N). Detailed sequencing of the gene was performed for the two most phenotypically dissimilar subjects. A single silent polymorphism was found in the third nucleotide for codon 248 in patient II-4, but not in patient III-4, and no additional mutations were found.<\/jats:p><jats:p>Classic congenital adrenal hyperplasia remains a difficult diagnosis to make in the absence of newborn screening because of the variability of phenotypic expression. Likewise, the variable degree of genital ambiguity in affected females in this family serves to question universal advocacy of prenatal steroid treatment in pregnancies at risk for congenital adrenal hyperplasia. Extensive molecular exploration did not provide an explanation of the phenotypic heterogeneity and supports the possibility of influences other than the CYP21 gene for the observed divergence.<\/jats:p>","DOI":"10.1210\/jcem.83.6.4887","type":"journal-article","created":{"date-parts":[[2014,1,8]],"date-time":"2014-01-08T17:03:27Z","timestamp":1389200607000},"page":"1940-1945","source":"Crossref","is-referenced-by-count":0,"title":["Study of a Kindred with Classic Congenital Adrenal Hyperplasia: Diagnostic Challenge due to Phenotypic Variance1"],"prefix":"10.1210","volume":"83","author":[{"given":"Daisy","family":"Chin","sequence":"first","affiliation":[{"name":"Department of Pediatrics, New York University Medical Center (D.C., N.U., R.D., S.O.), New York, New York 10016"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Phyllis W.","family":"Speiser","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, North Shore University Medical Center (P.W.S., N.D.), New York, New York 11030"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Julianne","family":"Imperato-McGinley","sequence":"additional","affiliation":[{"name":"the Department of Medicine, Cornell University Medical Center (J.I.-M.), New York, New York 10021"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naznin","family":"Dixit","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, North Shore University Medical Center (P.W.S., N.D.), New York, New York 11030"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naveen","family":"Uli","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, New York University Medical Center (D.C., N.U., R.D., S.O.), New York, New York 10016"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Raphael","family":"David","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, New York University Medical Center (D.C., N.U., R.D., S.O.), New York, New York 10016"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sharon E.","family":"Oberfield","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, New York University Medical Center (D.C., N.U., R.D., S.O.), New York, New York 10016"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"80","reference":[{"key":"2020071619592808200_R1","first-page":"241","article-title":"Genetics, diagnosis and management of 21-hydroxylase deficiency.","volume":"78","year":"1994","journal-title":"J Clin Endocrinol Metab"},{"key":"2020071619592808200_R2","doi-asserted-by":"crossref","first-page":"430","DOI":"10.1007\/BF00711358","article-title":"Molecular pathology of 21-hydroxylase deficiency.","volume":"17","year":"1994","journal-title":"J Inherit Metab Dis"},{"key":"2020071619592808200_R3","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1016\/S0083-6729(08)61147-4","article-title":"Genetic diseases of steroid 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