It should be noted that our data revealed notable differences in the frequency of viral suppression rates related to the last antiretroviral treatment option using univariate statistics, mitigated in the multivariate models by the initial clinical (history of AIDS), virologic (HIV-1 viral load at care entry of 5 log copies/mL) and immunologic (baseline lymphocyte CD4 count of 200 cells/μL) patient characteristics and the status of HCV coinfection. The gene discussed is CD4; the disease is AIDS.