The risk allele in IFNG-AS1 is present in Hispanics. A: patient characteristics of the samples used from the USC IBD biobank. B: after the performance of PCR-based genotyping of the IFNG-AS1 SNP, rs7134599, the numbers of AA, AG, and GG samples were quantified from 197 controls and 200 patients with inflammatory bowel disease (IBD). C: χ2 analysis of genotyping results. UC, ulcerative colitis, CD, Crohn’s disease.