IL1A and leprosy: The objective of this study was to investigate eight INDEL polymorphisms in seven genes involved in modulation of the host immune response, including CYP19A1 [rs11575899], NFKβ1 [rs28362491], IL1α [rs3783553], CASP8 [rs3834129], UGT1A1 [rs8175347], PAR1 [rs11267092], and CYP2E1 [INDEL 96pb], besides one VNTR (variable number tandem repeat) of 70 bp on intron 3 of IL4 [rs79071878] in a group consisting of 141 leprosy patients and 180 healthy individuals, to identify possible susceptibility markers of leprosy and evaluate the influence of genetic ancestry on disease risk.