They tested on humanized lab mice and primates, no human has been cured of HIV by gene therapy as of yet. The promise of the end of HIV is on the horizon, however the RNA gene therapy know as CRISPR/Cas9 leaves trace amounts of HIV-1 in the subjects meaning they're still actively contagious. They can no longer be infected with HIV-1 but their partners can be by the trace amounts.
As of 2021 medical journalThe use of CRISPR/Cas9 can turn the fatal virus into a chronic disease. Human trials have been started last July and no rebound has taken place in the persons involved. They're about to go into antiretroviral treatments to see if the virus will infect them. We're looking to see the cure before the end of 2025.
Medical studies as of 2023