HLA-DRB1 and pulmonary tuberculosis: Nevertheless, HLA-DRB1*04 interaction to male (p = 0.0001; OR = 2.71; 95% CI = 1.66 to 4.43) or smoking (p = 0.0564; OR = 2.99; 95% CI = 0.97 to 9.26) did not affect significantly the risk of susceptibility to pulmonary TB.