HLA-DRB1 and tuberculosis: With respect to HIV positive cohort the following observations were made: (i) frequency of HLA-A*2 was higher among TB positive women (Table 2(a)), (ii) frequency of HLA-B*35 was lower among TB negative women, (iii) HLA-B*52 and HLA-B*62 alleles were not detected among TB positive women, (iv) frequency of HLA-B*61 was higher among TB positive women (Table 2(b)), (v) HLA-DRB1*4 and HLA-DRB1*15 frequencies were higher among HIV positive subjects as compared to the healthy renal donors, and (vi) frequency of HLA-DRB1*8 was higher among TB positive men (Table 2(c)).