Using self-reported data on ischemic heart disease to evaluate the impact of the PON 192Q/R polymorphism on susceptibility to CHD , we found only a nonsignificant trend of 192RR homozygosity in women being a risk factor .
O O O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O O O O O O B-GeneOrGeneProduct B-SequenceVariant O O O O B-DiseaseOrPhenotypicFeature O O O O O O O O B-SequenceVariant O O B-OrganismTaxon O O O O O