For 157 tuberculosis patients, seven different NAT2 genotypes including *4/*4 (n = 72), *4/*5 (n = 6), *4/*6 (n = 31), *4/*7 (n = 25), *6/*6 (n = 12) and *7/*7 (n = 4), *5/*7 (n = 2), and *6/*7 (n = 5) were observed. The gene discussed is NAT2; the disease is tuberculosis.