A novel truncation mutation in GJA1 associated with open angle glaucoma and microcornea in a large Chinese family.

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  • Additional Information
    • Source:
      Publisher: Nature Publishing Group Country of Publication: England NLM ID: 8703986 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1476-5454 (Electronic) Linking ISSN: 0950222X NLM ISO Abbreviation: Eye (Lond) Subsets: MEDLINE
    • Publication Information:
      Publication: <2003->: London : Nature Publishing Group
      Original Publication: [London : Ophthalmological Society of the United Kingdom, 1987-
    • Subject Terms:
      Mutation*; Connexin 43/*genetics ; Cornea/*abnormalities ; Eye Abnormalities/*genetics ; Glaucoma, Open-Angle/*genetics; Adult ; Asian People/genetics ; Child ; China/epidemiology ; DNA Mutational Analysis ; Female ; Humans ; Intraocular Pressure ; Male ; Pedigree ; Visual Acuity ; Visual Fields ; Young Adult
    • Abstract:
      Purpose: To identify genetic defects in a large family with open angle glaucoma (OAG) and microcornea.
      Methods: Genomic DNA was prepared from leukocytes of 15 individuals from three generations of a Chinese family, including seven individuals with OAG and microcornea, one with microcornea alone, and seven healthy individuals. Whole exome sequencing was performed on genomic DNA of the proband. Candidate variants were obtained through multiple steps of bioinformatics analysis and validated by Sanger sequencing and segregation analysis.
      Results: Exome sequencing detected a candidate variant in GJA1, a novel truncation mutation (c.791_792delAA, p.K264Ifs*43). This mutation was present in all seven individuals with OAG and microcornea and the individual with microcornea alone, but not in the seven unaffected relatives in the family. It was not present in 1394 alleles from 505 unrelated controls without glaucoma and 192 normal controls. Extraocular signs were not observed in seven out of the eight individuals; only one was affected with dental enamel hypoplasia and syndactyly.
      Conclusions: A novel truncation mutation in GJA1 is associated with OAG and microcornea in a Chinese family. This suggests that GJA1 should be included as a candidate gene for glaucoma.
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    • Accession Number:
      0 (Connexin 43)
      0 (GJA1 protein, human)
    • Publication Date:
      Date Created: 20150516 Date Completed: 20160121 Latest Revision: 20221207
    • Publication Date:
      20231215
    • Accession Number:
      PMC4506350
    • Accession Number:
      10.1038/eye.2015.74
    • Accession Number:
      25976645