Mutations in the CEP290 (NPHP6) gene are a frequent cause of Leber congenital amaurosis

Am J Hum Genet. 2006 Sep;79(3):556-61. doi: 10.1086/507318. Epub 2006 Jul 11.

Abstract

Leber congenital amaurosis (LCA) is one of the main causes of childhood blindness. To date, mutations in eight genes have been described, which together account for approximately 45% of LCA cases. We localized the genetic defect in a consanguineous LCA-affected family from Quebec and identified a splice defect in a gene encoding a centrosomal protein (CEP290). The defect is caused by an intronic mutation (c.2991+1655A-->G) that creates a strong splice-donor site and inserts a cryptic exon in the CEP290 messenger RNA. This mutation was detected in 16 (21%) of 76 unrelated patients with LCA, either homozygously or in combination with a second deleterious mutation on the other allele. CEP290 mutations therefore represent one of the most frequent causes of LCA identified so far.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alleles
  • Alternative Splicing
  • Antigens, Neoplasm / genetics*
  • Chromosomes, Human, Pair 12 / genetics
  • Consanguinity
  • Exons / genetics
  • Homozygote
  • Humans
  • Mutation
  • Neoplasm Proteins / genetics*
  • Optic Atrophy, Hereditary, Leber / genetics*
  • Optic Atrophy, Hereditary, Leber / pathology
  • Pedigree
  • RNA Splice Sites / genetics

Substances

  • Antigens, Neoplasm
  • Cep290 protein, human
  • Neoplasm Proteins
  • RNA Splice Sites