Clinical features associated with mutations in the chromosome 1 open- angle glaucoma gene (GLC1A)

Wallace L.M. Alward, John H. Fingert, Michael A. Coote, A. Tim Johnson, S. Fabian Lerner, Denise Junqua, Fiona J. Durcan, Paul J. Mccartney, David A. Mackey, Val C. Sheffield, Edwin M. Stone

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399 Citations (Scopus)


Background - A substantial proportion of cases of glaucoma have a genetic basis. Mutations causing glaucoma have been identified in the chromosome 1 open-angle glaucoma gene (GLC1A), which encodes a 57-kd protein known as myocilin. The normal role of this protein and the mechanism by which mutations cause glaucoma are not known. Methods - We screened 716 patients with primary open-angle glaucoma and 596 control subjects for sequence changes in the GLC1A gene. Results - We identified 16 sequence variations that met the criteria for a probable disease-causing mutation because they altered the predicted amino acid sequence and they were found in one or more patients with glaucoma and in less than 1 percent of the control subjects. These 16 mutations were found in 33 patients (4.6 percent). Six of the mutations were found in more than 1 subject (total, 99). Clinical features associated with these six mutations included an age at diagnosis ranging from 8 to 77 years and maximal recorded intraocular pressures ranging from 12 to 77 mm Hg. Conclusions - A variety of mutations in the GLC1A gene are associated with glaucoma. The spectrum of disease can range from juvenile glaucoma to typical late-onset primary open-angle glaucoma.

Original languageEnglish
Pages (from-to)1022-1027
Number of pages6
JournalNew England Journal of Medicine
Issue number15
Publication statusPublished - 9 Apr 1998
Externally publishedYes


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