<prompt> In congenital dystrophic variety of epidermolysis bullosa, mutation is seen in the gene conding forLaminin 4Co11agen type 7Alpha 6 integerinKeratin 14  <response>: Dystrophic epidermolysis bullosa - collagen type VII Epidermolysis bullosa simplex -keratin 14 Junctional epidermolysis bullosa is an inherited disease affecting laminin and collagen . page no. 287. Reference IADVLs concise textbook of dermatology 