Abstract
DNA typing of human lymphocyte antigen (HLA)-dicloro-1-[beta]-D-ribofuranosyl-benzimidazole 1 (DRB1) alleles in 35 individuals serologically positive for T. cruzi and in 41 healthy controls was performed. DRB1 * 0409 allele was significantly more prevalent in seropositive individuals, with a trend being also observed for the DRB1 * 0701 and DRB1 * 1503 alleles. Although statistically insignificant, the latter was found more frequent in cases with cardiomyopathy.