We evaluated the frequency of the XRCC1 Arg399Gln substitution in patients with SLE ( n=265 ) and controls ( n=360 ) in a sample of the Polish population .
O O O O O O B-GeneOrGeneProduct B-SequenceVariant O O B-OrganismTaxon O B-DiseaseOrPhenotypicFeature O O O O O O O O O O O O O O O O