Baseline factors like CD4 count ≤200 cells/mm3 (p < 0.0001), Hb ≤ 10 g/dl (p = 0.001) and history of chewing tobacco (p < 0.0001) or consuming alcohol (p = 0.028) were associated with higher risk of incident TB on univariate analysis only (Table 4). Here, GSTM1 is linked to tuberculosis.