title: Novel compound heterozygous mutations in CNGA1in a Chinese family affected with autosomal recessive retinitis pigmentosa by targeted sequencing.
abstract: BACKGROUND
  About 37 genes have been reported to be involved in autosomal recessive retinitis pigmentosa, a hereditary retinal disease. However, causative genes remain unclear in a lot of cases.
  
  
  METHODS
  Two sibs of a Chinese family with ocular disease were diagnosed in Eye and ENT Hospital of Fudan University. Targeted sequencing performed on proband to screen pathogenic mutations. PCR combined Sanger sequencing then performed on eight family members including two affected and six unaffected individuals to determine whether mutations cosegregate with disease.
  
  
  RESULTS
  Two affected members exhibited clinical features that fit the criteria of autosomal recessive retinitis pigmentosa. Two heterozygous mutations (NM000087, p.Y82X and p.L89fs) in CNGA1 were revealed on proband. Affected members were compound heterozygotes for the two mutations whereas unaffected members either had no mutation or were heterozygote carriers for only one of the two mutations. That is, these mutations cosegregate with autosomal recessive retinitis pigmentosa.
  
  
  CONCLUSIONS
  Compound heterozygous mutations (NM000087, p.Y82X and p.L89fs) in exon 6 of CNGA1are pathogenic mutations in this Chinese family. Of which, p.Y82X is firstly reported in patient with autosomal recessive retinitis pigmentosa.
authors.affiliation: Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, Chinaᅟ. ykmarkwang@163.com.
authors.forename: Min
authors.identifier: http://orcid.org/0000-0002-8911-9635
authors.initials: M
authors.lastname: Wang
authors.affiliation: Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, Chinaᅟ
authors.forename: Dekang
authors.initials: D
authors.lastname: Gan
authors.affiliation: Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, Chinaᅟ
authors.forename: Xin
authors.initials: X
authors.lastname: Huang
authors.affiliation: Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, Chinaᅟ
authors.forename: Gezhi
authors.initials: G
authors.lastname: Xu
mesh_terms: D044466:Asian People; D054815:Cyclic Nucleotide-Gated Cation Channels / Q000235:genetics*; D004252:DNA Mutational Analysis; D004596:Electroretinography; D005260:Female; D006579:Heterozygote; D006801:Humans; D008297:Male; D009154:Mutation; D010375:Pedigree; D012174:Retinitis Pigmentosa / Q000235:genetics* / Q000473:pathology / Q000503:physiopathology; D035781:Siblings; D014792:Visual Acuity / Q000502:physiology; D014794:Visual Fields / Q000502:physiology
chemical_list: C518243:CNGA1 protein, human; D054815:Cyclic Nucleotide-Gated Cation Channels
keywords: Autosomal recessive retinitis pigmentosa; CNGA1; Targeted exome sequencing