Whole-exome sequencing in a consanguineous Pakistani family identifies a mutational hotspot in the COL7A1 gene, causing recessive dystrophic epidermolysis bullosa.

Details

Serval ID
serval:BIB_A4C21E0ABCE7
Type
Article: article from journal or magazin.
Publication sub-type
Case report (case report): feedback on an observation with a short commentary.
Collection
Publications
Institution
Title
Whole-exome sequencing in a consanguineous Pakistani family identifies a mutational hotspot in the COL7A1 gene, causing recessive dystrophic epidermolysis bullosa.
Journal
Clinical dysmorphology
Author(s)
Rehman A.U., Peter V.G., Quinodoz M., Dawood M., Rivolta C.
ISSN
1473-5717 (Electronic)
ISSN-L
0962-8827
Publication state
Published
Issued date
04/2020
Peer-reviewed
Oui
Volume
29
Number
2
Pages
86-89
Language
english
Notes
Publication types: Case Reports ; Journal Article
Publication Status: ppublish
Abstract
Dystrophic epidermolysis bullosa is a major form of epidermolysis bullosa and may be inherited as an autosomal dominant or recessive trait, with associated mutations in the COL7A1 gene. Here, we describe a consanguineous Pakistani family with four affected individuals suffering from recessive dystrophic epidermolysis bullosa. Exome sequencing of the proband's DNA revealed a homozygous missense variant (c.8038G>A:p.Gly2680Ser) in COL7A1 which cosegregated with disease in the family. The emergence of this particular glycine substitution in patients from diverse ethnic backgrounds such as China, United Kingdom, Poland, Iran, and Pakistan indicates that this variant most likely constitutes a recurrent mutational hotspot in the COL7A1 gene, rather than a germline mutation present at low levels in the general population.
Keywords
Alleles, Amino Acid Substitution, Collagen Type VII/genetics, Consanguinity, DNA Mutational Analysis, Epidermolysis Bullosa Dystrophica/diagnosis, Epidermolysis Bullosa Dystrophica/genetics, Exons, Female, Gene Frequency, Genes, Recessive, Genome, Human, Genotype, Humans, Male, Mutation, Pakistan, Pedigree, Phenotype, Exome Sequencing
Pubmed
Web of science
Create date
09/10/2020 11:39
Last modification date
12/03/2024 8:08
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