Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 1 de 1
Filtrar
Mais filtros

Base de dados
Ano de publicação
Tipo de documento
Intervalo de ano de publicação
1.
Hum Mutat ; 25(2): 222, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15643614

RESUMO

Patients carrying mutations in the retinal guanylate cyclase (GUCY2D) gene were reported to be constantly affected with a particular form of Leber congenital amaurosis (LCA) defined as a "congenital stationary cone-rod dystrophy with high hypermetropia, panretinal degeneration and highly reduced visual acuity". We report here, the study of two patients affected with different retinal disorder: a typical GUCY2D-LCA phenotype and early-onset severe retinitis pigmentosa (RP). Unexpectedly, they gave birth to an infant suffering from LCA. The genetic study in the family allowed to explain the disease in the infant by showing that the GUCY2D-LCA disease was accounted for by compound heterozygosity for two severe GUCY2D mutations (c.3043+4A>T, c.2943delG) while the early-onset severe RP resulted from homozygosity for a 4 bp insertion in the same gene, despite the sound phenotypic differences (c.3236insACCA). Interestingly, this last mutation is excepted to result in a 28 amino acid elongation of the protein contrary to all GUCY2D mutations accounting for LCA which are expected to be null alleles. This report gives support to the existence of exceptional GUCY2D mutations accounting for a milder and different phenotype compared to the typical GUCY2D congenital stationary cone-rod dystrophy.


Assuntos
Cegueira/genética , Guanilato Ciclase/genética , Mutação , Receptores de Superfície Celular/genética , Adolescente , Adulto , Cegueira/diagnóstico , Feminino , Humanos , Masculino , Linhagem , Fenótipo
SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa