" /> Incontinentia pigmenti - CISMeF





Preferred Label : Incontinentia pigmenti;

Symbol : IP;

CISMeF acronym : IP; IP2;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : IP2; Incontinentia pigmenti, familial male-lethal type; Incontinentia pigmenti, type II; Bloch-sulzberger syndrome;

Description : Familial incontinentia pigmenti (IP) is a genodermatosis that segregates as an X-linked dominant disorder and is usually lethal prenatally in males (The International Incontinentia Pigmenti Consortium, 2000). In affected females it causes highly variable abnormalities of the skin, hair, nails, teeth, eyes, and central nervous system. The prominent skin signs occur in 4 classic cutaneous stages: perinatal inflammatory vesicles, verrucous patches, a distinctive pattern of hyperpigmentation, and dermal scarring. Cells expressing the mutated X chromosome are eliminated selectively around the time of birth, so females with IP exhibit extremely skewed X-inactivation. Familial incontinentia pigmenti is caused by mutations in the NEMO gene and is here referred to as IP2, or 'classical' incontinentia pigmenti. Sporadic incontinentia pigmenti, the so-called IP1, which maps to Xp11, is categorized as hypomelanosis of Ito (300337).;

Inheritance : X-linked dominant;

Molecular basis : Caused by mutation in the inhibitor of nuclear factor kappa B kinase, regulatory subunit gamma gene (IKBKG, 300248.0001);

Prefixed ID : #308300;

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29/04/2024


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