Barbora Jeřábková

Keratin mutations in patients with epidermolysis bullosa simplex: correlations between phenotype severity and disturbance of intermediate filament molecular structure

Background  Epidermolysis bullosa simplex (EBS) is an inherited skin disorder caused by mutations in the keratin 5 (KRT5) and keratin 14 (KRT14) genes, with fragility of basal keratinocytes leading to epidermal cytolysis and blistering.

Analysis of the COL7A1 gene in Czech patients with dystrophic epidermolysis bullosa reveals novel and recurrent mutations.

Dystrophic epidermolysis bullosa (DEB) is an inherited skin fragility disorder where blistering occurs in the sublamina densa zone at the level of anchoring fibrils of the dermo-epidermal junction zone. Both autosomal dominant (DDEB) and recessive (RDEB) forms result from mutations in the type VII collagen gene (COL7A1). The purpose of this study was to analyse the COL7A1 gene and perform genotype-phenotype correlations in Czech patients with DEB. DNA analysis of the COL7A1 gene was performed in 27 probands with diagnosis of RDEB and 6 probands with diagnosis of DDEB. 29 different sequence variants were found, ten of which have not been reported previously In the set of our RDEB patients, the most frequent mutation was the splice site mutation c.425A>G (29,6% of RDEB mutant alleles)

Ten years of DNA diagnostics of epidermolysis bullosa in the Czech Republic.

Epidermolysis bullosa (EB) is a heterogeneous group of inherited skin disorders characterized by blister formation. Classification of patients with EB begins with their separation into one of the four major EB groups, based on the level to which blisters develop: EB simplex (EBS), junctional EB (JEB), dystrophic EB (DEB) and Kindler syndrome. The next level of subclassification takes into account the clinical features present in a given patient, most notably the distribution and severity of cutaneous and extracutaneous disease involvement.