Late boosting of the RV144 regimen with AIDSVAX B/E and ALVAC-HIV in HIV-uninfected Thai volunteers: a double-blind, randomised controlled trial

Publication date: Available online 6 February 2020Source: The Lancet HIVAuthor(s): Punnee Pitisuttithum, Sorachai Nitayaphan, Suwat Chariyalertsak, Jaranit Kaewkungwal, Peter Dawson, Jittima Dhitavat, Benjaluck Phonrat, Siriwat Akapirat, Nicos Karasavvas, Lindsay Wieczorek, Victoria Polonis, Michael A Eller, Poonam Pegu, Dohoon Kim, Alexandra Schuetz, Surat Jongrakthaitae, Yingjun Zhou, Faruk Sinangil, Sanjay Phogat, Carlos A DiazgranadosSummaryBackgroundThe RV144 phase 3 vaccine trial in Thailand demonstrated that ALVAC-HIV (vCP1521) and AIDSVAX B/E administration over 6 months resulted in a 31% efficacy in preventing HIV acquisition. In this trial, we assessed the immunological effect of an additional vaccine boost to the RV144 regimen at varying intervals between the priming vaccine series and the boost.MethodsRV306 is a double-blind, placebo-controlled, randomised clinical trial done at three clinical sites in Thailand. Eligible volunteers were HIV-uninfected individuals aged 20–40 years who were at low risk for HIV infection and in good health. A randomisation schedule was centrally generated with fixed sized strata for Research Institute for Health Sciences Chiang Mai and combined Bangkok clinics. Participants were randomly assigned to one of five groups and then further randomly assigned to either vaccine or placebo. All participants received the primary RV144 vaccine series at months 0, 1, 3, and 6. Group 1 received no additional boost, group 2 received additional A...
Source: The Lancet HIV - Category: Infectious Diseases Source Type: research