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Prevalence of the alleles of CTLA4 gene in patients with Crohn’s disease and ulcerative colitis
| Crohn’s disease | Ulcerative colitis | Controls | ||
| n = 130 | n = 150 | n = 170 | ||
| Exon 1 | AA | 47 (36.2%) | 56 (37.3%) | 70 (41.2%) |
| +49A/G | AG | 67 (51.5%) | 66 (44.0%) | 73 (42.9%) |
| GG | 16 (12.3%) | 28 (18.6%) | 27 (15.9%) | |
| G allele frequency | 38.10% | 40.60% | 37.40% | |
