<prompt> In congenital dystrophic variety of epidermolysisbullosa, mutation is seen in the gene conding for:Laminin 4Collagen type 7Alpha 6 integerinKeratin 14  <response>: Ans. b. Collagen type 7Epidermolysis bullosa simplex: Keratitis 5 and 14Junctional: LamininDystrophicans: Collagen-7 