The NAT2*5 allele T was associated with decreased risk of DIH (OR = 0.4; 95% CI = 0.17–0.96; p = 0.038), while the NAT2*6 allele G were associated with increased risk of DIH among those treated for TB (OR = 4.2; 95% CI = 1.1–5.2; p = 0.017) (Table 3). This evidence concerns the gene NAT2 and tuberculosis.