The study demonstrated significantly low hemoglobin (Hb) 91.7% (95% CI 78.2–97.1), low WBC 27.8% (95% CI 15.8–44.0), high indirect bilirubin 7.4% (95% CI 2.1–23.3), ALT 41.8% (95% CI 28.4–56.7), and AST 72.2% (95% CI 57.3–83.3) among TB-HIV patients. The gene discussed is GSTM1; the disease is tuberculosis.