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.
MeSH Terms
Alleles
Alternative Splicing
Antigens, Neoplasm/genetics
Cell Cycle Proteins
Chromosomes, Human, Pair 12/genetics
Consanguinity
Cytoskeletal Proteins
Exons/genetics
Homozygote
Humans
Mutation
Neoplasm Proteins/genetics
Optic Atrophy, Hereditary, Leber/genetics,pathology
Pedigree
RNA Splice Sites/genetics
Chemicals
Antigens, Neoplasm
Cell Cycle Proteins
Cep290 protein, human
Cytoskeletal Proteins
Neoplasm Proteins
RNA Splice Sites
Authors & Affiliations
14 authors, click to expand affiliations / ORCID
den Hollander Anneke I
Department of Human Genetics, Radboud University Nijmegen Medical Centre, 6500 HB Nijmegen, The Netherlands. a.denhollander@antrg.umcn.nl
Koenekoop Robert K
Yzer Suzanne
Lopez Irma
Arends Maarten L
Voesenek Krysta E J
Zonneveld Marijke N
Strom Tim M
Meitinger Thomas
Brunner Han G
Hoyng Carel B
van den Born L Ingeborgh
Rohrschneider Klaus
Cremers Frans P M
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