The ADA concentrations were comparable in the 'confirmed TB' and 'probable TB' groups [68 U/L (range 38–133) and 60 U/L (range 29–200), respectively] but as expected significantly higher than in the 'non-TB' group [14 U/L (range 5–19), (p = 0.001)]. The gene discussed is ADA; the disease is tuberculosis.