Document Detail


Dermatological phenotype in Costello syndrome: consequences of Ras dysregulation in development.
MedLine Citation:
PMID:  22098123     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The RASopathies are a class of human genetic syndromes caused by germline mutations in genes that encode protein components of the Ras/mitogen-activated protein kinase (MAPK) pathway. Costello syndrome (CS) is a RASopathy caused by mutations in the HRAS gene, a key regulator of signal transduction.
OBJECTIVE: To quantify the specific cutaneous phenotype observed in 46 individuals with Costello syndrome with confirmed HRAS mutations.
METHODS: This was a cross-sectional study. Dermatological surveys were designed by the authors and were completed by parents of mutation-positive individuals with CS at the Costello Syndrome Family Network (CSFN) conferences in 2007 and 2009. Dermatological examinations were performed by the authors at the CSFN conferences.
RESULTS: Cutaneous papillomas were reported in 33 of the 46 (72%) participants, with age of onset ranging from infancy to 22years. Individuals with CS are more likely than patients with cardiofaciocutaneous syndrome (CFC) to present with cutaneous papillomas (72% vs. 5%, P<0·001) and palmoplantar keratoderma (76% vs. 36%, P<0·001). Individuals with CS are less likely than individuals with CFC to present with sparse or absent eyebrows (9% vs. 90%, P<0·001) or keratosis pilaris (33% vs. 80%, P=0·001). This study also identified that loose, redundant skin on the hands and feet, 'stippled' dermatoglyphs (pachydermatoglyphia) on the fingertips (eight of 26, 31%) and acanthosis nigricans (17 of 46, 37%) are frequent features of CS.
CONCLUSIONS: While there is significant phenotypic overlap among syndromes of the Ras/MAPK pathway, individuals with CS are more likely than individuals with CFC syndrome to present with cutaneous papillomas, palmoplantar keratoderma and full eyebrows, and are less likely to present with ulerythema ophryogenes, keratosis pilaris or multiple naevi. The dermatological features of CS, a Ras dysregulation syndrome, share many features with cutaneous paraneoplastic syndromes. This may provide further insight into the role of Ras signalling in cutaneous paraneoplastic syndromes.
Authors:
D H Siegel; J A Mann; A L Krol; K A Rauen
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  The British journal of dermatology     Volume:  166     ISSN:  1365-2133     ISO Abbreviation:  Br. J. Dermatol.     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-02-23     Completed Date:  2012-04-27     Revised Date:  2014-07-03    
Medline Journal Info:
Nlm Unique ID:  0004041     Medline TA:  Br J Dermatol     Country:  England    
Other Details:
Languages:  eng     Pagination:  601-7     Citation Subset:  IM    
Copyright Information:
© 2011 The Authors. BJD © 2011 British Association of Dermatologists.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Age of Onset
Child
Child, Preschool
Costello Syndrome / complications,  genetics*
Cross-Sectional Studies
Female
Foot Dermatoses / etiology
Genes, ras / genetics*
Hair Diseases / etiology
Hand Dermatoses / etiology
Humans
Infant
Male
Papilloma / etiology
Phenotype
Pigmentation Disorders / etiology
Skin Diseases / etiology*
Skin Neoplasms / etiology
Young Adult
Grant Support
ID/Acronym/Agency:
HD048502/HD/NICHD NIH HHS; K23 HD048502-01/HD/NICHD NIH HHS; UL1 RR024140/RR/NCRR NIH HHS
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