Analysis of ADA plasmatic average levels among patients from group 1, with different patterns of drug-resistant or -sensitive TB, revealed equal distribution among subcategories of bacteriologically confirmed PTB (34.07 ± 9.31 IU/L in DS-TB, 37.00 ± 12.57 IU/L in DR-TB, 35.50 ± 7.14 IU/L in RR-TB and 31.29 ± 7.15 in MDR-TB) compared to clinically diagnosed PTB (29.56 ± 7.91) (Figure 1b). This evidence concerns the gene ADA and tuberculosis.