During an earlier phase 2 base trial (study # NCT00074997), HIV-1 infected patients received a gene therapy product (anti-HIV-1 Ribozyme [OZ1]). Gene therapy is an investigational treatment where genes are inserted into an individual's cells and tissues to treat a disease. The gene therapy OZ1 is thought to have anti-HIV-1 actions. This is an Observational Study to provide long term follow-up of those HIV-1 infected patients who received the gene therapy product (anti-HIV-1 Ribozyme [OZ1]) as part of the earlier study. Patients are seen twice yearly until 5 years from initial infusion of study drug has elapsed and then yearly until withdrawal or study completion. The study will monitor for and record any ill effects from the gene therapy product to provide long term safety information. Observational study - no investigational drug administered.