In order to evaluate the possible association of IL17A G197A and IL17F T7488C SNPs and Chagas disease, the allele and genotype frequencies between patients (CD) and their subgroups (CCC, without CCC, with LVSD, without LVSD, Mild/moderate LVSD, severe LVSD) and controls were compared (Table 2). This evidence concerns the gene IL17A and Chagas disease.