Clinical and genetic analysis of an infant with aldosterone synthase deficiency.
10.3760/cma.j.cn511374-20200302-00121
- Author:
Haihua YANG
1
;
Qiong CHEN
;
Lu ZHANG
;
Yan CUI
;
Haiyan WEI
Author Information
1. Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Henan Provincial Key Laboratory of Children's Genetics and Metabolic Diseases, Zhengzhou, Henan 450000, China. haiyanwei2009@163.com.
- Publication Type:Journal Article
- MeSH:
Child;
Cytochrome P-450 CYP11B2/genetics*;
Genetic Testing;
High-Throughput Nucleotide Sequencing;
Humans;
Infant;
Male;
Mutation;
Whole Exome Sequencing
- From:
Chinese Journal of Medical Genetics
2021;38(9):865-868
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To analyze the clinical characteristics and genetic variants in a two-month-and-one-day male infant with aldosterone synthase deficiency.
METHODS:Clinical data of the child was collected. Whole exome sequencing was carried out by next generation sequencing(NGS). Candidate variants were verified by Sanger sequencing.
RESULTS:The infant had measured 54 cm (-2.1 SD) in length and 3.9 kg (-2.8 SD) in weight, and featured recurrent vomiting, poor feeding, apathetic appearance and failure to thrive. Blood electrolyte testing showed low sodium and increased potassium. Serum cortisol, adrenocorticotrophic hormone, 17-alpha-hydroxyl progesterone, androstenedione, and testosterone were all within the normal ranges. The plasma renin activity activity was increased, and plasma aldosterone level was low. NGS revealed that the infant has harbored compound heterozygous variants of the CYP11B2 gene, namely c.1334T>G(p.Phe445Cys) inherited from his father and c.1121G>A(p.Arg374Gln) inherited from his mother. Neither variant was reported previously, and both were predicted to be deleterious for the function of the protein product.
CONCLUSION:The compound heterozygous variants of c.1334T>G (p.Phe445Cys) and c.1121G>A (p.Arg374Gln) of the CYP11B2 gene probably underlay the disease in this patient.
