" /> Pityriasis rubra pilaris - CISMeF





Preferred Label : Pityriasis rubra pilaris;

Symbol : PRP;

CISMeF acronym : PRP;

Type : Phenotype, molecular basis known;

Description : Pityriasis rubra pilaris is an uncommon skin disorder characterized by the appearance of keratotic follicular papules, well-demarcated salmon-colored erythematous plaques covered with fine powdery scales interspersed with distinct islands of uninvolved skin, and palmoplantar keratoderma. Most cases are sporadic, although up to 6.5% of PRP-affected individuals report a positive family history. The rare familial cases show autosomal dominant inheritance with incomplete penetrance and variable expression: the disorder is usually present at birth or appears during the first years of life and is characterized by prominent follicular hyperkeratosis, diffuse palmoplantar keratoderma, and erythema, with only a modest response to treatment (summary by Fuchs-Telem et al., 2012).;

Inheritance : Autosomal dominant;

Molecular basis : Caused by mutation in the caspase recruitment domain-containing protein 14 gene (CARD14, 607211.0006);

Prefixed ID : #173200;

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26/05/2025


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