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From the Department of Neurology (M.S., H.-C.D.), University of Duisburg-Essen, Germany; Divisions of Preventive Medicine and Aging (T.K.), Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, and Department of Epidemiology, Harvard School of Public Health, Boston, MA; and Institute of Pharmacology (I.G., G.T., D.R.), Peter Holtz Research Center of Pharmacology and Experimental Therapeutics, University Hospital, Ernst-Moritz Arndt University, Greifswald, Germany.
* To whom correspondence should be addressed. E-mail: schuerks{at}hotmail.com.
Abstract-- The G1246A polymorphism in the gene of the hypocretin receptor 2 (HCRTR2) has been linked to the risk for cluster headache (CH). The authors examined this association in a large sample of 226 patients with CH and 266 controls from Germany. The genotype and allele distribution varied significantly between patients and controls. Homozygous carriers of the G-allele had a twofold increase in risk for CH (OR 1.97; 95% CI 1.32 to 2.92; p = 0.0007).
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