This web site describes the efforts by the Italian National AIDS Center at the Italian National Institute of Health to develop preventive and therapeutic HIV vaccines based on the HIV-1 Tat protein.

The Italian National AIDS Center has been conducting research for over ten years on HIV AIDS Vaccines, focusing its effort on the HIV-1 Tat vaccine candidate which uses the HIV-1 Tat protein as an antigen. The HIV-1 Tat Vaccine has become internationally known in recent years as the Italian AIDS vaccine. The use of the HIV-1 Tat protein as a candidate vaccine antigen represents a radically different approach to creating a vaccine against HIV-1 since it is based on the use of a regulatory protein produced very early after HIV infection, instead of the use of envelope proteins as most other HIV AIDS vaccines tested in the clinic to date do. The Italian AIDS vaccine has successfully been tested in pre-clinical studies and, recently, was found to be safe and immunogenic in Phase I clinical studies. Plans are underway to test HIV-1 Tat Vaccine candidates, with the HIV-1 Tat protein alone or in combination with other antigens or microparticles, in Phase I and II studies in Italy and South Africa.