Novel heterozygous missense mutation of SLC12A3 gene in Gitelman syndrome: A case report

World Journal of Clinical Cases
Cheng-Lin Wang

Abstract

To screen for possible pathogenic loci in a patient with Gitelman syndrome by high-throughput exome sequencing and to explore the relationship between genotype and phenotype. The clinical data of the patient were collected. Peripheral blood samples were obtained to isolate white blood cells and extract genomic DNA. High-throughput whole exome sequencing for candidate pathogenic genes in the proband was completed by the Huada Gene Technology Co. Ltd (Shenzhen, China). Sequencing showed a novel heterozygous missense mutation (a G to A transition at nucleotide 2582) in exon 22 of the SLC12A3 gene, which resulted in a substitution of histidine for arginine at position 816 of the LRP1B protein and caused the occurrence of disease. This is the first report of a new pathogenic mutation in SLC12A3. Further functional studies are particularly necessary to explore potential molecular mechanisms.

Methods Mentioned

BETA
exome sequencing
X-ray

Software Mentioned

Fastq
FATHMM
SIFT
Polyphen2 HDIV
Platypus
ClinVar
FastQC
Freebayes
Varscan2
Samtools

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