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Novel nonsense variants in SLURP1 and DSG1 cause palmoplantar keratoderma in Pakistani families.


ABSTRACT:

Background

Inherited palmoplantar keratodermas (PPKs) are clinically and genetically heterogeneous and phenotypically diverse group of genodermatoses characterized by hyperkeratosis of the palms and soles. More than 20 genes have been reported to be associated with PPKs including desmoglein 1 (DSG1) a key molecular component for epidermal adhesion and differentiation. Mal de Meleda (MDM) is a rare inherited autosomal recessive genodermatosis characterized by transgrediens PPK, associated with mutations in the secreted LY6/PLAUR domain containing 1 (SLURP1) gene.

Methods

This study describes clinical as well as genetic whole exome sequencing (WES) and di-deoxy sequencing investigations in two Pakistani families with a total of 12 individuals affected by PPK.

Results

WES identified a novel homozygous nonsense variant in SLURP1, and a novel heterozygous nonsense variant in DSG1, as likely causes of the conditions in each family.

Conclusions

This study expands knowledge regarding the molecular basis of PPK, providing important information to aid clinical management in families with PPK from Pakistan.

SUBMITTER: Akbar A 

PROVIDER: S-EPMC6708247 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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Publications

Novel nonsense variants in SLURP1 and DSG1 cause palmoplantar keratoderma in Pakistani families.

Akbar Abida A   Prince Claire C   Payne Chloe C   Fasham James J   Ahmad Wasim W   Baple Emma L EL   Crosby Andrew H AH   Harlalka Gaurav V GV   Gul Asma A  

BMC medical genetics 20190823 1


<h4>Background</h4>Inherited palmoplantar keratodermas (PPKs) are clinically and genetically heterogeneous and phenotypically diverse group of genodermatoses characterized by hyperkeratosis of the palms and soles. More than 20 genes have been reported to be associated with PPKs including desmoglein 1 (DSG1) a key molecular component for epidermal adhesion and differentiation. Mal de Meleda (MDM) is a rare inherited autosomal recessive genodermatosis characterized by transgrediens PPK, associated  ...[more]

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