We also found an interaction between the presence of DBH -1021T and the -889TT genotype ( rs1800587 ) of IL1A : synergy factor = 1.9 ( 1.2-3.1 , 0.005 ) .
O O O O O O O O O B-GeneOrGeneProduct B-SequenceVariant O O B-SequenceVariant O O B-SequenceVariant O O B-GeneOrGeneProduct O O O O O O O O O O O