BACKGROUNDRecessive dystrophic epidermolysis bullosa (RDEB) is a severe form of skin fragility disorder due to mutations in COL7A1 encoding basement membrane type VII collagen (C7), the main constituent of anchoring fibrils (AFs) in skin.
BACKGROUNDRecessive dystrophic epidermolysis bullosa (RDEB) patients have mutations in the COL7A1 gene and thus lack functional type VII collagen (C7) protein; they have marked skin fragility and blistering.
We present three unrelated patients with two identical pathogenic compound heterozygous mutations in the COL7A1 gene that developed different clinical forms of dystrophic epidermolysis bullosa-epidermolysis bullosa pruriginosa and mild recessive non-Hallopeau-Siemens-raising the possibility of other genetic or environmental modifying factors responsible for the phenotype of the disease.
Whole exome sequencing of 18 patients with DEB from 17 unrelated Indian families revealed 20 distinct sequence variants in the COL7A1 gene including 2 widely prevalent mutations.
Functional impairment or complete loss of type VII collagen, caused by mutations within COL7A1, lead to the severe recessive form of the skin blistering disease dystrophic epidermolysis bullosa (RDEB).
Dystrophic Epidermolysis Bullosa: COL7A1 Mutation Landscape in a Multi-Ethnic Cohort of 152 Extended Families with High Degree of Customary Consanguineous Marriages.
Naturally occurring exon skipping in COL7A1, translating collagen VII, suggests that skipping of exons containing disease-causing mutations may be feasible for the treatment of DEB.
Our results demonstrate that RTM28, which covers >60% of all mutations reported in DEB and is thus the longest RTM described so far for the repair of COL7A1, represents a promising candidate for therapeutic applications.
Identification of Two Homozygous Sequence Variants in the COL7A1 Gene Underlying Dystrophic Epidermolysis Bullosa by Whole-Exome Analysis in a Consanguineous Family.
These data contribute to the expanding database of COL7A1 mutations in DEB and should be useful for genetic counseling and prenatal diagnosis in affected families.
Aminoglycosides restore full-length type VII collagen by overcoming premature termination codons: therapeutic implications for dystrophic epidermolysis bullosa.
Remarkably, identical mutations in COL7A1, which encodes an anchoring fibril protein present at the dermal-epidermal junction, can cause both DEB and EBP with either autosomal dominant or recessive inheritance.
Dystrophic Epidermolysis Bullosa (DEB) is a rare bullous genodermatosis caused by mutations in COL7A1, which encodes collagen type VII, the main component of anchoring fibrilis.