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2017 ; 114
(10
): E1933-E1940
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Clinical, genetic, and structural basis of congenital adrenal hyperplasia due to
11?-hydroxylase deficiency
#MMPMID28228528
Khattab A
; Haider S
; Kumar A
; Dhawan S
; Alam D
; Romero R
; Burns J
; Li D
; Estatico J
; Rahi S
; Fatima S
; Alzahrani A
; Hafez M
; Musa N
; Razzghy Azar M
; Khaloul N
; Gribaa M
; Saad A
; Charfeddine IB
; Bilharinho de Mendonça B
; Belgorosky A
; Dumic K
; Dumic M
; Aisenberg J
; Kandemir N
; Alikasifoglu A
; Ozon A
; Gonc N
; Cheng T
; Kuhnle-Krahl U
; Cappa M
; Holterhus PM
; Nour MA
; Pacaud D
; Holtzman A
; Li S
; Zaidi M
; Yuen T
; New MI
Proc Natl Acad Sci U S A
2017[Mar]; 114
(10
): E1933-E1940
PMID28228528
show ga
Congenital adrenal hyperplasia (CAH), resulting from mutations in CYP11B1, a gene
encoding 11?-hydroxylase, represents a rare autosomal recessive Mendelian
disorder of aberrant sex steroid production. Unlike CAH caused by 21-hydroxylase
deficiency, the disease is far more common in the Middle East and North Africa,
where consanguinity is common often resulting in identical mutations. Clinically,
affected female newborns are profoundly virilized (Prader score of 4/5), and both
genders display significantly advanced bone ages and are oftentimes hypertensive.
We find that 11-deoxycortisol, not frequently measured, is the most robust
biochemical marker for diagnosing 11?-hydroxylase deficiency. Finally,
computational modeling of 25 missense mutations of CYP11B1 revealed that specific
modifications in the heme-binding (R374W and R448C) or substrate-binding (W116C)
site of 11?-hydroxylase, or alterations in its stability (L299P and G267S), may
predict severe disease. Thus, we report clinical, genetic, hormonal, and
structural effects of CYP11B1 gene mutations in the largest international cohort
of 108 patients with steroid 11?-hydroxylase deficiency CAH.