Prevalence of AIPL1 mutations in inherited retinal degenerative disease

Melanie M. Sohocki, Isabelle Perrault, Bart P. Leroy, Annette M. Payne, Sharola Dharmaraj, Shomi S. Bhattacharya, Josseline Kaplan, Irene H. Maumenee, Robert Koenekoop, Françoise M. Meire, David G. Birch, John R. Heckenlively, Stephen P. Daiger

Research output: Contribution to journalArticlepeer-review

Abstract

Leber congenital amaurosis (LCA) is the most severe form of inherited retinal dystrophy and the most frequent cause of inherited blindness in children. LCA is usually inherited in an autosomal recessive fashion, although rare dominant cases have been reported. One form of LCA, LCA4, maps to chromosome 17p13 and is genetically distinct from other forms of LCA. We recently identified the gene associated with LCA4, AIPL1 (aryl-hydrocarbon interacting protein-like 1) and identified three mutations that were the cause of blindness in five families with LCA. In this study, AIPL1 was screened for mutations in 512 unrelated probands with a range of retinal degenerative diseases to determine if AIPL1 mutations cause other forms of inherited retinal degeneration and to determine the relative contribution of AIPL1 mutations to inherited retinal disorders in populations worldwide. We identified 11 LCA families whose retinal disorder is caused by homozygous or compound heterozygous AIPL1 mutations. We also identified affected individuals in two apparently dominant families, diagnosed with juvenile retinitis pigmentosa or dominant cone-rod dystrophy, respectively, who are heterozygous for a 12-bp AIPL1 deletion. Our results suggest that AIPL1 mutations cause approximately 7% of LCA worldwide and may cause dominant retinopathy. (C) 2000 Academic Press.

Original languageEnglish (US)
Pages (from-to)142-150
Number of pages9
JournalMolecular genetics and metabolism
Volume70
Issue number2
DOIs
StatePublished - Jun 2000
Externally publishedYes

Keywords

  • AIPLI
  • Cone-rod dystrophy
  • Leber congenital amaurosis
  • Mutation screening

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Endocrinology

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