KRT14 and epidermolysis bullosa simplex: Therefore, when all Polish probands with APSS (n = 20; for further details, see Szczecinska et al. 2014) and other types of EBS (n = 47; this study) are considered (n = 20 + 47 = 67), the numbers change as follows: KRT5 and KRT14 mutations are present in 38/67 (57 %) of total EBS probands and mutations in TGM5 in 20/67 (30 %) probands.