Patients who had poor social support [AOR = 2.53, (95% CI 1.70, 9.13)], HIV-related perceived stigma [AOR = 2.83, (95% CI 1.78, 4.48)] and CD4 cell count < 200 [AOR = 3.89, (95% CI 1.02, 14.83)] were more likely to have depression as compared to individuals who had good social support, no perceived HIV stigma and CD4 cell count > 200, respectively. The gene discussed is CD4; the disease is depressive disorder.