Distribution of estimated haplotype frequencies in the TNFAIP3 locus for control individuals (controls) and patients with rheumatoid arthritis (cases). The minor allele of each tag-single nucleotide polymorphism is presented in bold. Haplotypes with frequency over 2% are shown, ordered by the odds ratio (OR) comparing cases with controls. Haplotype #5 was significantly different. CI, confidence interval.