Identification of mutations in the AIPL1, CRB1, GUCY2D, RPE65, and RPGRIP1 genes in patients with juvenile retinitis pigmentosa

J Med Genet. 2005 Nov;42(11):e67. doi: 10.1136/jmg.2005.035121.


Objective: To identify mutations in the AIPL1, CRB1, GUCY2D, RPE65, and RPGRIP1 genes in patients with juvenile retinitis pigmentosa.

Methods: Mutation analysis was carried out in a group of 35 unrelated patients with juvenile autosomal recessive retinitis pigmentosa (ARRP), Leber's congenital amaurosis (LCA), or juvenile isolated retinitis pigmentosa (IRP), by denaturing high performance liquid chromatography followed by direct sequencing.

Results: All three groups of patients showed typical combinations of eye signs associated with retinitis pigmentosa: pale optic discs, narrow arterioles, pigmentary changes, and nystagmus. Mutations were found in 34% of

Patients: in CRB1 (11%), GUCY2D (11%), RPE65 (6%), and RPGRIP1 (6%). Nine mutations are reported, including a new combination of two mutations in CRB1, and new mutations in GUCY2D and RPGRIP1. The new GUCY2D mutation (c.3283delC, p.Pro1069ArgfsX37) is the first pathological sequence change reported in the intracellular C-terminal domain of GUCY2D, and did not lead to the commonly associated LCA, but to a juvenile retinitis pigmentosa phenotype. The polymorphic nature of three previously described (pathological) sequence changes in AIPL1, CRB1, and RPGRIP1 was established. Seven new polymorphic changes, useful for further association studies, were found.

Conclusions: New and previously described sequence changes were detected in retinitis pigmentosa in CRB1, GUCY2D, and RPGRIP1; and in LCA patients in CRB1, GUCY2D, and RPE65. These data, combined with previous reports, suggest that LCA and juvenile ARRP are closely related and belong to a continuous spectrum of juvenile retinitis pigmentosa.

MeSH terms

  • Adaptor Proteins, Signal Transducing
  • Adolescent
  • Adult
  • Aged
  • Carrier Proteins / genetics*
  • Child
  • Child, Preschool
  • Cloning, Molecular
  • Cytoskeletal Proteins
  • DNA Mutational Analysis*
  • Eye Proteins / genetics*
  • Female
  • Guanylate Cyclase / genetics*
  • Humans
  • Infant
  • Male
  • Membrane Proteins / genetics*
  • Middle Aged
  • Mutation*
  • Nerve Tissue Proteins / genetics*
  • Phenotype
  • Polymorphism, Genetic
  • Proteins / genetics*
  • Receptors, Cell Surface / genetics*
  • Retinitis Pigmentosa / genetics*
  • cis-trans-Isomerases


  • AIPL1 protein, human
  • Adaptor Proteins, Signal Transducing
  • CRB1 protein, human
  • Carrier Proteins
  • Cytoskeletal Proteins
  • Eye Proteins
  • Membrane Proteins
  • Nerve Tissue Proteins
  • Proteins
  • RPGRIP1 protein, human
  • Receptors, Cell Surface
  • guanylate cyclase 1
  • retinoid isomerohydrolase
  • Guanylate Cyclase
  • cis-trans-Isomerases