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Epidermolysis bullosa simplex with mottled pigmentation with noncicatricial alopecia: identification of a recurrent p.P25L mutation in KRT5 in four affected family members

Abstract Epidermolysis bullosa simplex with mottled pigmentation (EBS-MP) is a rare subtype of EBS that is characterized by blistering, mottled pigmentation of the trunk and limbs, punctate hyperkeratosis of the palms and soles, and dystrophic nails.(1) EBS-MP is caused by a mutation in the KRT5 or KRT14 gene encoding keratin 5 (K5) and keratin 14 (K14), respectively.(1, 2) Dermatopathia pigmentosa reticularis (DPR), caused by a KRT14 mutation, is characterized by reticulate pigmentation, noncicatricial alopecia, onychodystrophia and loss of dermatoglyphics.(3) Here, we report cases of EBS-MP with noncicatricial alopecia, a clinical feature of DPR, with a recurrent p.P25L mutation in KRT5 in four Japanese family members. This article is protected by copyright. All rights reserved.