In the present study, the percentage of individuals with both GSTM1 and GSTT1 null mutations was higher in DILI total patients (6%); however, no statistically significant difference was found, in agreement with previous studies that did not find a significant association for GSTM1 null and GSTT1 null in Indian (p = 0.39) and Caucasian (p = 0.17) patients with the presence of anti-TB DILI [14,15]. Here, GSTM1 is linked to tuberculosis.