Relative abundance of C1 inhibitor in control was 33920.4 ± 8991.7 and in visceral leishmaniasis was 54101.0 ± 27858.3 (p < 0.01) Relative abundance of transthyretin in control was 22236.7 ± 2794.3 and in visceral leishmaniasis was 12804.3 ± 6128.6 (p < 0.0001). This evidence concerns the gene TTR and visceral leishmaniasis.