scholarly journals Aldosterone Synthase Deficiency

2020 ◽  
Author(s):  
Keyword(s):  
Aldosterone Synthase ◽  
Aldosterone Synthase Deficiency

Molecular Analysis of the CYP11B2 Gene in 62 Patients with Hypoaldosteronism Due to Aldosterone Synthase Deficiency

2020 ◽  
Vol 106 (1) ◽  
pp. e182-e191
Author(s):  
Christina Merakou ◽  
Irene Fylaktou ◽  
Amalia Sertedaki ◽  
Maria Dracopoulou ◽  
Antonis Voutetakis ◽  
...  
Keyword(s):  
Gene Sequencing ◽  
Failure To Thrive ◽  
In Silico Analysis ◽  
Autosomal Recessive Disorder ◽  
Molecular Study ◽  
Aldosterone Synthase ◽  
Salt Wasting ◽  
Pathogenic Variants ◽  
Novel Variants ◽  
Aldosterone Synthase Deficiency

Abstract Context Isolated congenital hypoaldosteronism presents in early infancy with symptoms including vomiting, severe dehydration, salt wasting, and failure to thrive. The main causes of this rare autosomal recessive disorder is pathogenic variants of the CYP11B2 gene leading to aldosterone synthase deficiency. Objective To investigate the presence of CYP11B2 pathogenic variants in a cohort of patients with a clinical, biochemical, and hormonal profile suggestive of aldosterone synthase deficiency. Design Clinical and molecular study. Setting Tertiary academic Children’s Hospital, Center for Rare Pediatric Endocrine Diseases. Patients and Methods Sixty-two patients (56 unrelated patients and 6 siblings), with hypoaldosteronism and their parents, underwent CYP11B2 gene sequencing after its selective amplification against the highly homologous CYP11B1 gene. In silico analysis of the identified novel variants was carried out to evaluate protein stability and potential pathogenicity. Results CYP11B2 gene sequencing revealed that 62 patients carried a total of 12 different pathogenic CYP11B2 gene variants, 6 of which are novel. Importantly, 96% of the 56 patients carried the previously reported p.T185I variant either in homozygosity or in compound heterozygosity with another variant. The 6 novel variants detected were: p.M1I, p.V129M, p.R141Q, p.A165T, p.R448C, and the donor splice site variant of intron 8, c.1398 + 1G > A. Conclusion Molecular diagnosis was achieved in 62 patients with aldosterone synthase deficiency, the largest cohort thus far reported. Six novel genetic variants were identified as possibly pathogenic, extending the spectrum of reported molecular defects of the CYP11B2 gene.

scholarly journals Molecular genetic verification of isolated mineralocorticoid deficiency due to aldosterone synthase deficiency

2009 ◽  
Vol 55 (1) ◽  
pp. 28-30
Author(s):  
N Yu Kalinchenko ◽  
N A Zubkova ◽  
A N Tyulpakov
Keyword(s):  
Autosomal Recessive ◽  
Molecular Genetic ◽  
Autosomal Recessive Disorder ◽  
Adrenal Hyperplasia ◽  
Genetic Studies ◽  
Aldosterone Synthase ◽  
Salt Wasting ◽  
History Of ◽  
17 Hydroxyprogesterone ◽  
Aldosterone Synthase Deficiency

Isolated mineralocorticoid deficiency is a rare hereditary autosomal recessive disorder that is characterized by salt wasting and that has the severest manifestations in infants. This paper is the first in the Russian literature to describe cases of isolated aldosterone deficiency. In both cases, the patients were monitored and treated for misdiagnosed congenital adrenal hyperplasia; however, the permanently low level of 17-hydroxyprogesterone could put in doubt the diagnosis and suspect isolated mineralocorticoid deficiency, by keeping in mind a history of salt wasting. By using the presented cases as an example, the authors give an algorithm for the examination and differential diagnosis of this condition and other diseases that have the similar clinical picture. Aldosterone synthase deficiency in patients was verified by molecular genetic studies - there were mutations in the CYP112 gene.

scholarly journals The clinical significance of aldosterone synthase deficiency: report of a novel mutation in the CYP11B2 gene

2014 ◽  
Vol 14 (1) ◽  
Author(s):  
Elaine Hui ◽  
Matthew CW Yeung ◽  
Pik To Cheung ◽  
Elaine Kwan ◽  
Louis Low ◽  
...  
Keyword(s):  
Clinical Significance ◽  
Novel Mutation ◽  
Aldosterone Synthase ◽  
Aldosterone Synthase Deficiency
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