Genotype–Phenotype Correlation in Chinese Patients with Dystrophic Epidermolysis Bullosa Pruriginosa
pmid: 21879237
Genotype–Phenotype Correlation in Chinese Patients with Dystrophic Epidermolysis Bullosa Pruriginosa
Dystrophic epidermolysis bullosa pruriginosa (DEB-Pr) is a rare variant of dystrophic epidermolysis bullosa (DEB) due to dominant or recessive mutations in the COL7A1 gene. More than 40 mutations in COL7A1 have been described in DEB-Pr. The aim of this study was to understand the genotype-phenotype correlation in Chinese patients with DEB-Pr. Three Chinese families with typical clinical features of DEB-Pr were studied. The results were analysed in association with the eight Chinese DEB-Pr patients reported in the literature. In the three Chinese families with DEB-Pr, we found two dominant cases with G1773R and c.6900+1G>C mutations, and one case with heterozygous G2701W mutation of uncertain inheritance mode. In the 10 Chinese patients with dominant type of DEB-Pr, 7 glycine substitutions and three splicing site mutations of exon 87 skipping were identified. Glycine substitution mutations in the triple helix region and exon 87 skipping, leading to the in-frame deletion of 23 amino acid residues in the triple-helix, are often seen in Chinese patients with dominant DEB-Pr, although the glycine substitutions are also frequently present in dominant DEB.
- Peking University Third Hospital China (People's Republic of)
- Peking University China (People's Republic of)
Adult, Male, China, Collagen Type VII, Genotype, DNA Mutational Analysis, Glycine, Exons, Epidermolysis Bullosa Dystrophica, Young Adult, Phenotype, Amino Acid Substitution, Asian People, Mutation, Humans, Female, Prurigo, RNA Splice Sites, RNA, Messenger, Child
Adult, Male, China, Collagen Type VII, Genotype, DNA Mutational Analysis, Glycine, Exons, Epidermolysis Bullosa Dystrophica, Young Adult, Phenotype, Amino Acid Substitution, Asian People, Mutation, Humans, Female, Prurigo, RNA Splice Sites, RNA, Messenger, Child
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