Epidermolysis bullosa simplex (EBS), is a disorder resulting from mutations in the genes encoding keratin 5 or keratin 14.:598see also Template:Congenital malformations and deformations of skin appendages, Template:Phakomatoses, Template:Pigmentation disorders, Template:DNA replication and repair-deficiency disorderAnkyrin: Long QT syndrome 4 Epidermolysis bullosa simplex (EBS), is a disorder resulting from mutations in the genes encoding keratin 5 or keratin 14.:598 Blister formation of EBS occurs at the dermoepidermal junction. Sometimes EBS is called epidermolytic.