A novel homozygous keratin 14 mutation in a patient with autosomal recessive epidermolysis bullosa simplex and squamous cell carcinoma of the tongue

Epidermolysis bullosa simplex (EBS) is a group of inherited skin disorders characterized by lysis of basal keratinocytes leading to the development of intraepidermal blisters from mild trauma1 EBS is known to be an autosomal dominant disorder; however, a few recessive cases have been reported. In EBS, the risk of cutaneous malignancy is not higher than in the normal population2 We present a patient who showed generalized blistering after minor trauma followed by brownish reticulated hyperpigmentation and squamous cell carcinoma of the tongue. We identified a novel homozygous KRT14 mutation (E392X) inherited in an autosomal recessive fashion.