{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T08:18:52Z","timestamp":1773130732072,"version":"3.50.1"},"reference-count":21,"publisher":"Wiley","license":[{"start":{"date-parts":[[2015,1,1]],"date-time":"2015-01-01T00:00:00Z","timestamp":1420070400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"funder":[{"DOI":"10.13039\/501100004919","name":"King Abdulaziz City for Science and Technology","doi-asserted-by":"publisher","award":["11-BIO1434-20"],"award-info":[{"award-number":["11-BIO1434-20"]}],"id":[{"id":"10.13039\/501100004919","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["International Journal of Endocrinology"],"published-print":{"date-parts":[[2015]]},"abstract":"<jats:p>Congenital adrenal hyperplasia (CAH) due to steroid 11<jats:italic>\u03b2<\/jats:italic>-hydroxylase deficiency is the second most common form of CAH, resulting from a mutation in the<jats:italic>CYP11B1<\/jats:italic>gene. Steroid 11<jats:italic>\u03b2<\/jats:italic>-hydroxylase deficiency results in excessive mineralcorticoids and androgen production leading to hypertension, precocious puberty with acne, enlarged penis, and hyperpigmentation of scrotum of genetically male infants. In the present study, we reported 3 male cases from a Saudi family who presented with penile enlargement, progressive darkness of skin, hypertension, and cardiomyopathy. The elder patient died due to heart failure and his younger brothers were treated with hydrocortisone and antihypertensive medications. Six months following treatment, cardiomyopathy disappeared with normal blood pressure and improvement in the skin pigmentation. The underlying molecular defect was investigated by PCR-sequencing analysis of all coding exons and intron-exon boundary of the<jats:italic>CYP11B1<\/jats:italic>gene. A novel biallelic mutation c.780 G&gt;A in exon 4 of the<jats:italic>CYP11B1<\/jats:italic>gene was found in the patients. The mutation created a premature stop codon at amino acid 260 (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant=\"normal\">p<\/mml:mi><mml:mo>.<\/mml:mo><mml:mi mathvariant=\"normal\">W<\/mml:mi><mml:mn mathvariant=\"normal\">260<\/mml:mn><\/mml:mrow><mml:mrow><mml:mi>\u2217<\/mml:mi><\/mml:mrow><\/mml:msup><\/mml:mrow><\/mml:math>), resulting in a truncated protein devoid of 11<jats:italic>\u03b2<\/jats:italic>-hydroxylase activity. Interestingly, a somatic mutation at the same codon (c.779 G&gt;A,<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M2\"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant=\"normal\">p<\/mml:mi><mml:mo>.<\/mml:mo><mml:mi mathvariant=\"normal\">W<\/mml:mi><mml:mn mathvariant=\"normal\">260<\/mml:mn><\/mml:mrow><mml:mrow><mml:mi>\u2217<\/mml:mi><\/mml:mrow><\/mml:msup><\/mml:mrow><\/mml:math>) was reported in a patient with papillary thyroid cancer (COSMIC database). In conclusion, we have identified a novel nonsense mutation in the<jats:italic>CYP11B1<\/jats:italic>gene that causes classic steroid 11<jats:italic>\u03b2<\/jats:italic>-hydroxylase deficient CAH. Cardiomyopathy and cardiac failure can be reversed by early diagnosis and treatment.<\/jats:p>","DOI":"10.1155\/2015\/595164","type":"journal-article","created":{"date-parts":[[2015,7,22]],"date-time":"2015-07-22T21:02:42Z","timestamp":1437598962000},"page":"1-5","source":"Crossref","is-referenced-by-count":10,"title":["A Novel Mutation in the<i>CYP11B1<\/i>Gene Causes Steroid 11<i>\u03b2<\/i>-Hydroxylase Deficient Congenital Adrenal Hyperplasia with Reversible Cardiomyopathy"],"prefix":"10.1155","volume":"2015","author":[{"given":"Mohammad A.","family":"Alqahtani","sequence":"first","affiliation":[{"name":"Department of Pediatrics, Aseer Central Hospital, Abha 62523, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ayed A.","family":"Shati","sequence":"additional","affiliation":[{"name":"Department of Child Health, College of Medicine, King Khalid University, Abha 61421, Saudi 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