GSTM1 and tuberculosis: Regarding clinical characteristics, drug-susceptible TB (61.9% vs. 38.7%, p<0.001) and hemoglobin (Hb) < 100 g/l at the time of TB diagnosis (26.9% vs. 3.8%, p = 0.01) were more common in new TB cases, and positive culture (83.3% vs. 99.1, p<0.001) and GeneXpert (29.5% vs. 61.5%, p = 0.03)–in previously treated TB cases (Table 2).