A polymorphism of the hypocretin receptor 2 gene is associated with cluster headache.

Rainero, I; Gallone, S; Valfrè, W; Ferrero, M; Angilella, G; Rivoiro, C; Rubino, E; De Martino, P et al. · Neurology · 2004

case_control · Level III

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Abstract

Several polymorphisms of the hypocretin/orexin system genes were evaluated in 109 cluster headache patients and 211 controls. The 1246 G>A polymorphism of the gene was significantly different between cases and controls. Homozygosity for the G allele was associated with an increased disease risk (OR: 6.79, 95% CI, 2.25 to 22.99). The data suggest that the HCRTR2 gene or a linked locus significantly modulates the risk for cluster headache.

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