Comparison of demographic and clinical features of AED-treated viremic and aviremic (stable cART regimen) patients disclosed no differences in age, mortality, AIDS status, gender, ethnicity, HIV risk factor, duration of HIV infection and CD4+ T cell nadir and viral burden at the time of first diagnosis although CD4+ T cell levels were significantly higher at the time of HIV diagnosis in the viremic group (Table 1). This evidence concerns the gene CD4 and HIV infectious disease.