HIV-1 proteins (gp120, Tat, Vpr, and Nef) are released from infected cells, either through secretion or after lysis of the cell, throughout the course of infection and perpetuate an ongoing burden in a number of tissues, including the CNS, resulting in toxicity and damage, regardless of ART (Wang et al., 2006; Strazza et al., 2011; Gresele et al., 2014). This evidence concerns the gene TAT and infection.