An association between the 5-HTTLPR polymorphism and risk of PD ( S/S genotype OR [ 95 % CI ] : 1.7 [ 1.2-2.5 ] , p = 0.002 ) was found .
O O O O B-GeneOrGeneProduct O O O O B-DiseaseOrPhenotypicFeature O O O O O O O O O O O O O O O O O O O O O O