A phenotype combining hidradenitis suppurativa with Dowling-Degos disease caused by a founder mutation in PSENEN.
Br J Dermatol
; 178(2): 502-508, 2018 02.
Article
em En
| MEDLINE
| ID: mdl-28922471
ABSTRACT
BACKGROUND:
Dowling-Degos disease (DDD), featuring reticulate pigmentation, and familial hidradenitis suppurativa (HS) share many clinical features including autosomal dominant inheritance, flexural location and follicular defects. The coexistence of the two disorders was recently found to result from mutations in PSENEN, encoding the γ-secretase subunit protein presenilin enhancer.OBJECTIVES:
To investigate PSENEN mutations in a series of four unrelated patients who presented with combined DDD and HS.METHODS:
Mutation and haplotype analysis of PSENEN by polymerase chain reaction, and cellular assays investigating the Notch signalling pathway.RESULTS:
Here we report four families of Jewish Ashkenazi origin who presented with clinical features characteristic of both disorders. All patients were found to carry the same, heterozygous mutation in PSENEN (c.168T>G, p.Y56X). Haplotype analysis revealed that the mutation originated from a common ancestor. Genes associated with DDD, as well as HS, have been shown to encode important regulators of Notch signalling. Accordingly, using a reporter assay, we demonstrated decreased Notch activity in a patient's keratinocytes.CONCLUSIONS:
The present data confirm the genetic basis of the combined DDD-HS phenotype and suggest that Notch signalling may play a central role in the pathogenesis of this rare condition.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dermatopatias Genéticas
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Dermatopatias Papuloescamosas
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Hiperpigmentação
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Hidradenite Supurativa
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Efeito Fundador
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Secretases da Proteína Precursora do Amiloide
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Proteínas de Membrana
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Mutação
Limite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
Br J Dermatol
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Israel