2010
DOI: 10.1590/s0004-27302010000800014
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Combined 17α-hydroxylase/17,20-lyase deficiency due to p.R96W mutation in the CYP17 gene in a Brazilian patient

Abstract: SUMMARYCongenital adrenal hyperplasia (CAH) resulting from 17α-hydroxylase/17,20-lyase deficiency is a rare autosomal recessive disease and the second most common form of CAH in Brazil. We describe the case of a Brazilian patient with CYP17 deficiency (17α-hydroxylase/17,20-lyase deficiency) caused by a homozygous p.R96W mutation on exon 1 of the CYP17 gene, an unusual genotype in Brazilian patients with this form of CAH. The patient, raised as a normal female, sought medical care for lack of pubertal signs an… Show more

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Cited by 10 publications
(12 citation statements)
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References 18 publications
(22 reference statements)
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“…1,10 A mutação genética no CYP17A1 afeta tanto a esteroidogênese ovariana quanto adrenal. 11 A 17alfa-hidroxilase e a 17-20-liase são responsáveis pela hidroxilação da progesterona e pregnenolona e pela produção de DHEA e androstenediona. 3,11,12 Se nem a atividade da 17alfa-hidroxilase nem da 17,20-liase estão presentes, a pregnenolona é convertida em mineralocorticoide.…”
Section: Discussionunclassified
“…1,10 A mutação genética no CYP17A1 afeta tanto a esteroidogênese ovariana quanto adrenal. 11 A 17alfa-hidroxilase e a 17-20-liase são responsáveis pela hidroxilação da progesterona e pregnenolona e pela produção de DHEA e androstenediona. 3,11,12 Se nem a atividade da 17alfa-hidroxilase nem da 17,20-liase estão presentes, a pregnenolona é convertida em mineralocorticoide.…”
Section: Discussionunclassified
“…Similarly, subjects with congenital CYP17A1 deficiency produce excessive mineralocorticoids and develop hypertension and hypokalemia [20], which can be mitigated by glucocorticoid replacementtherapy, including low-dose prednisone or prednisolone [21]. The use of glucocorticoid replacement to correct treatment-related steroid imbalances is similar to the use of glucocorticoid replacement therapy for other forms of acute or chronic adrenal insufficiency [22].…”
Section: Impact Of Blocking Cyp17a1 On Synthesis Of Adrenal Steroids mentioning
confidence: 99%
“…Other anomalies of sexual differentiation are sexual infantilism in women, syndrome of polycystic ovary (Costanzo 1998;Nóbrega et al 2004;Martin et al 2008;Costenaro et al 2010;Kalfa et al 2010) and androgen insensitivity from mutations in the genes of these receptors that generate XY individuals with female external genitalia at birth (Domenice et al 2002).…”
Section: Morphological Abnormalities Related To Sexual Differentiatiomentioning
confidence: 99%