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Abstract #8254 Published in IGR 4-3
A case-control comparison of the clinical characteristics of glaucoma and ocular hypertensive patients with and without the myocilin Gln368Stop mutation
Graul TA; Kwon YH; Zimmerman MB; Kim CS; Sheffield VC; Stone EM; Alward WLMAmerican Journal of Ophthalmology 2002; 134: 884-890
PURPOSE: To determine whether primary open-angle glaucoma (POAG) and ocular hypertensive (OHT) patients who harbor the myocilin Gln368Stop mutation differ in phenotype or clinical course from patients without the mutation. DESIGN: Case-control study. METHODS: A retrospective case-control study compared all known POAG (n = 18) and OHT (n = 4) patients harboring the Gln368Stop mutation evaluated by the University of Iowa Glaucoma Service with control patients from the same population. Patients and control subjects were matched for diagnosis, age, sex, and race, and were compared for phenotype and clinical course. RESULTS: Mean age of disease onset and mean peak intraocular pressures (IOPs) of cases were similar to those reported by other studies. There was no statistically significant difference between cases and controls for the following variables: age at onset, peak IOP, Snellen visual acuity, number of medications, Humphrey visual field (HVF) mean deviation, HVF pattern deviation, number of filtering surgeries performed, time intervals from diagnosis to argon laser trabeculoplasty (ALT), diagnosis to first filtering surgery, ALT to first filtering surgery, and percentage change in IOP after ALT and after first filtering surgery. CONCLUSIONS: There is no statistically significant difference between the onset and clinical course of POAG and OHT caused by the Gln368Stop mutation and POAG and OHT not associated with the mutation.
W.L.M. Alward, MD, Department of Ophthalmology and Visual Sciences, University of Iowa College of Medicine, 200 Hawkinds Drive, Iowa City, IA 52242, USA. wallace-alward@uiowa.edu
Classification:
1.2 Population genetics (Part of: 1 General aspects)
