Two novel mutations in the EIF2AK3 gene in children with Wolcott-Rallison syndrome

Date
2011-05-01Author
Reis, Andre F. [UNIFESP]
Kannengiesser, Caroline
Jennane, Farida
Della Manna, Thais
Cheurfa, Nadir
Oudin, Claire
Savoldelli, Roberta Diaz
Oliveira, Carolina [UNIFESP]
Grandchamp, Bernard
Kok, Fernando
Velho, Gilberto
Type
ArtigoISSN
1399-543XIs part of
Pediatric DiabetesDOI
10.1111/j.1399-5448.2010.00679.xMetadata
Show full item recordAbstract
Wolcott-Rallison syndrome (WRS, OMIM 226980) is a rare autosomal recessive disorder characterized by permanent neonatal diabetes mellitus, epiphyseal dysplasia, and other multisystemic clinical manifestations. We described two novel mutations in the EIF2AK3 gene in two consanguineous families with WRS from Brazil and Morocco. We have observed in case 1 a homozygous C > T replacement at base pair c.1192 at exon 7, generating a stop codon at position 398 (Gln398Stop). Both of his parents were found to be heterozygous for the mutation. We detected in both parents of case 2, a deceased Moroccan girl, a duplication of base pair c.851A at exon 5 (c.851dupA) leading to a frameshift and a stop codon at position 285 (p.Pro285AlafsX3). Both cases 1 and 2 had neonatal diabetes mellitus, multiple epiphyseal dysplasia, and growth delay, and presented episodes of acute hepatic dysfunction. Case 1 presented central hypothyroidism, developmental delay, and mild mental retardation. Case 2 presented a fatal episode of acute renal failure. the clinical phenotype associated with the syndrome can be variable, but a combination of infancy-onset diabetes mellitus, multiple epiphyseal dysplasia, and hepatic and/or renal dysfunction is the mainstay of diagnosis.
Citation
Pediatric Diabetes. Malden: Wiley-Blackwell, v. 12, n. 3, p. 187-191, 2011.Keywords
bone dysplasiadiabetes mellitus
EIF2AK3
WRS
Sponsorship
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Societe Francophone du Diabete (SFD - Alfediam)
Collections
- EPM - Artigos [17701]