A LargeGLC1CGreek Family with a Myocilin T377M Mutation: Inheritance and Phenotypic Variability
Copyright policy )A LargeGLC1CGreek Family with a Myocilin T377M Mutation: Inheritance and Phenotypic Variability
POAG is a complex disease; therefore, families in which a glaucoma gene has been mapped may carry additional POAG genes. The goal of this study was to determine whether mutations in the myocilin (MYOC) gene on chromosome 1 are present in two POAG families, which have previously been mapped to the GLC1C locus on chromosome 3.The three exons of MYOC were screened by denaturing (d)HPLC. Samples with heteroduplex peaks were sequenced. Clinical findings were compared with genotype status in all available family members over the age of 20 years.A T377M coding sequence change in MYOC was identified in family members of the Greek GLC1C family but not in the Oregon GLC1C family. Individuals carrying both the MYOC T377M variant and the GLC1C haplotype were more severely affected at an earlier age than individuals with just one of the POAG genes, suggesting that these two genes interact or that both contribute to the POAG phenotype in a cumulative way.
- Oregon Health & Science University United States
- University of Melbourne Australia
- Gulf Coast Regional Blood Center United States
- Institute of Child Health Greece
- University of Ioannina Greece
Glaucoma, Open-Angle/ethnology/*genetics, Adult, Male, Genotype, DNA Mutational Analysis, Inheritance Patterns, Heteroduplex Analysis, Polymerase Chain Reaction, Eye Proteins/*genetics, Exons/genetics, Humans, Glycoproteins/*genetics, Cytoskeletal Proteins/*genetics, Eye Proteins, Chromatography, High Pressure Liquid, Aged, Glycoproteins, Aged, 80 and over, Greece, *Mutation, Exons, Middle Aged, Chromosomes, Human, Pair 3/*genetics, Pedigree, Cytoskeletal Proteins, Chromosomes, Human, Pair 1/*genetics, Phenotype, Haplotypes, Chromosomes, Human, Pair 1, Greece/ethnology, Female, Chromosomes, Human, Pair 3, Glaucoma, Open-Angle
Glaucoma, Open-Angle/ethnology/*genetics, Adult, Male, Genotype, DNA Mutational Analysis, Inheritance Patterns, Heteroduplex Analysis, Polymerase Chain Reaction, Eye Proteins/*genetics, Exons/genetics, Humans, Glycoproteins/*genetics, Cytoskeletal Proteins/*genetics, Eye Proteins, Chromatography, High Pressure Liquid, Aged, Glycoproteins, Aged, 80 and over, Greece, *Mutation, Exons, Middle Aged, Chromosomes, Human, Pair 3/*genetics, Pedigree, Cytoskeletal Proteins, Chromosomes, Human, Pair 1/*genetics, Phenotype, Haplotypes, Chromosomes, Human, Pair 1, Greece/ethnology, Female, Chromosomes, Human, Pair 3, Glaucoma, Open-Angle
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