Participants progressing to Step 2 will receive a single dose of VOR 400 mg followed by a leukapheresis. If an increase in cell-associated HIV RNA (ca-RNA) is observed in-vivo following the single VOR dose, they will be eligible to donate cells for the manufacture of HXTC (Step 3). Successful manufacturing of the HIV-1 antigen expanded specific T cells will progress participants to combination treatment in Steps 4 and 5. In Steps 4 and Step 5, participants will receive two series of VOR dosing and HXTC infusions, for a total 20 doses of VOR 400 mg and 5 HXTC infusions.