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  • Title: Pachyonychia congenita: a case report of a successful treatment with rosuvastatin in a patient with a KRT6A mutation.
    Author: Abdollahimajd F, Rajabi F, Shahidi-Dadras M, Saket S, Youssefian L, Vahidnezhad H, Uitto J.
    Journal: Br J Dermatol; 2019 Sep; 181(3):584-586. PubMed ID: 30307612.
    Abstract:
    Pachyonychia congenita (PC) is a rare autosomal dominant disorder characterized by nail dystrophy and palmoplantar keratoderma with severe plantar pain affecting quality of life. There is no effective treatment. Heterozygous mutations in the keratin genes KRT6A, KRT6B, KRT6C, KRT16 and KRT17 have been reported as a cause of PC. Herein we present a female patient with an amino acid substitution mutation in KRT6A (c.1381G>A, p.Glu461Lys in exon 7) and classic features of PC associated with oral leucokeratosis and follicular hyperkeratosis. We also demonstrate successful treatment of the patient with rosuvastatin. A 3.6-mm reduction in plantar callosity thickness was demonstrated by sonography. Our patient also experienced significant pain relief that allowed her to increase physical activity (Children's Dermatology Life Quality Index score dropped nine points following treatment). Collectively, these improvements suggest that rosuvastatin may offer a promising treatment for PC. What's already known about this topic? Pachyonychia congenita (PC) is an autosomal dominant disease characterized by nail dystrophy and painful plantar keratoderma. Keratolytics, emollients, retinoids and steroids have been used for treatment but with limited benefits. What does this study add? A patient with PC who had a KRT6A mutation was treated with rosuvastatin with significant improvement in plantar hyperkeratosis and pain. Statins could be a promising treatment for PC with long-term safety, but further studies are needed.
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