As a control the anti-K14 LLOO1 reacted with HaCaT, N/Tert-1, NEB-1 but not with KEB-11 as it was derived from a patient suffering from a recessive form of epidermolysis bullosa simplex (EBS) with a premature termination codon in the K14 gene (Fig. 3C). The gene discussed is CPSF4; the disease is epidermolysis bullosa simplex.