Journal
MOVEMENT DISORDERS
Volume 24, Issue 4, Pages 613-616Publisher
WILEY-LISS
DOI: 10.1002/mds.22471
Keywords
TOR1A; single-nucelotide polymorphisms; blepharospasm; primary adult-onset; dystonia; spread
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Funding
- Comitato Promotore Telethon, Italy [GGP05165]
- Benign Essential Belpharospasm Research Foundation, Beaumont, TX, USA
- National Institute on Aging and National Institute of Neurological Disorders and Stoke, National Institutes of Health
- Department of Health and Human Service, Bethesda, MD, USA [Z01 AG000957-05]
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We studied the influence of the rs1182 polymorphism of the TOR1A gene on the risk of dystonia spread in two representative cohorts of patients presenting with primary blepharospasm (BSP), one from Italy and the other front the United States of America. The relationship between rs1182 polymorphism and spread was estimated by Kaplan-Meier survival curves and Cox proportional hazard regression models adjusted by age and sex, age of BSP onset. In both series, patients carrying the T allele (G/T or T/T) in the rs1182 polymorphism were more likely to have dystonia spread as compared with the homozygous carriers of the common G allele. The comparable findings obtained in two independent cohorts support it genetic contribution to BSP spread. (C) 2009 Movement Disorder Society
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