In another study Bassi et al. found no correlation between XRCC1 Arg399Gln, XRCC3 Thr241Met, and XRCC4 Ile401Thr polymorphisms and SLE; however, the XRCC1Gln/Gln or Arg/Gln genotypes were associated with the presence of anti-dsDNA antibody in Brazilians [29]. This evidence concerns the gene XRCC4 and systemic lupus erythematosus.