KIR3DL1 and Chagas disease: In this study, the pair KIR3DL2-HLA-A3/A11 was less frequent in chronic Chagas disease: KIR3DL2 is a framework gene that is present in almost all genotypes, meaning that the difference in the frequency of this inhibitory KIR-HLA pair may be related to differences in the frequencies of HLA-A3/A11 ligands and not reflecting participation in the pathogenesis of Chagas disease.