Median CD4+ cell counts were lower in extrapulmonary tuberculosis patients (126.5 cells/μL, IQR: 44.25–225.75) compared to pulmonary tuberculosis patients (264.0 cells/μL, IQR: 84.75–442.0), though this difference was not statistically significant (p = 0.21). The gene discussed is CD4; the disease is extrapulmonary tuberculosis.