Pachyonychia congenita (PC) is a group of autosomal dominant disorders caused by mutations in one of 5 keratin genes (KRT6A, KRT6B, KRT6C, KRT16, or KRT17).
Pachyonychia congenita (PC) is a rare autosomal dominant genodermatosis caused by a mutation in any one of 5 keratin genes (KRT6A, KRT6B, KRT6C, KRT16 or KRT17) featuring painful palmoplantar keratoderma, variable nail dystrophy, cysts, follicular hyperkeratosis, and often oral leukokeratosis.
Our cases for comparison included 4 cases with Mal de Meleda PPK associated with autosomal-recessive SLURP1 mutations, one case with pachyonychia congenita type II PPK associated with an autosomal-dominant KRT17 mutation, and one case with focal PPK associated with an autosomal-dominant KRT16 mutation.
The patient's clinical presentation and history were consistent with pachyonychia congenita (PC), an autosomal dominant genodermatosis caused by mutations in the genes for keratin 6, K6a and K6b; keratin 16, K16; and keratin 17, K17.
Pachyonychia congenita (PC) is a rare autosomal dominant genodermatosis caused by a mutation in any one of 5 keratin genes (KRT6A, KRT6B, KRT6C, KRT16 or KRT17) featuring painful palmoplantar keratoderma, variable nail dystrophy, cysts, follicular hyperkeratosis, and often oral leukokeratosis.
We reviewed the relevant literature with a particular focus on the Krt16 null mouse, which spontaneously develops footpad lesions that mimic several aspects of PC-associated PPK.
Pachyonychia congenita (PC) is a group of autosomal dominant disorders caused by mutations in one of 5 keratin genes (KRT6A, KRT6B, KRT6C, KRT16, or KRT17).
Missense mutations at the KRT16 locus can cause pachyonychia congenita (PC, OMIM:167200) or focal non-epidermolytic palmoplantar keratoderma (FNEPPK, OMIM:613000), which each entail painful calluses on palmar and plantar skin.
Dominantly acting missense alleles in KRT16 are causative for pachyonychia congenita (PC), a genodermatosis involving debilitating palmoplantar keratoderma (PPK), nail dystrophy, oral lesions and, frequently, alterations in glands and hair.