A Challenge Study to Assess the Protective Efficacy of Two Malaria Vaccine Candidates

Summary

This study aims to assess the safety and effectiveness of four new candidate malaria vaccines; ChAd63 CS, ChAd63 ME-TRAP, MVA CS \& MVA ME-TRAP. These vaccines consist of viruses (ChAd63 and MVA) which have been genetically modified so (i) they cannot replicate in humans and (ii) they include parts of the malaria parasite; Plasmodium falciparum (CS and ME-TRAP). The hope is that these vaccines will induce immune responses in vaccinees that are able to prevent malaria. This proposed study will compare how effective ChAd63-MVA CS is at preventing malaria infection in UK volunteers following malaria challenge compared to ChAd63-MVA ME-TRAP. The study will be conducted at the University of Oxford's Centre for Clinical Vaccinology and Tropical Medicine (CCVTM), Oxford, UK and the Wellcome Trust Clinical Research Facility in Southampton, UK. The malaria challenge will take place at the insectary at Imperial College (Infection and Immunity Section) in London, UK.

Timeline

Start

2012-04

Primary completion

2012-11

Completion

2012-11

Publications

• Hodgson SH, Ewer KJ, Bliss CM, Edwards NJ, Rampling T, Anagnostou NA, de Barra E, Havelock T, Bowyer G, Poulton ID, de Cassan S, Longley R, Illingworth JJ, Douglas AD, Mange PB, Collins KA, Roberts R, Gerry S, Berrie E, Moyle S, Colloca S, Cortese R, Sinden RE, Gilbert SC, Bejon P, Lawrie AM, Nicosia A, Faust SN, Hill AV. Evaluation of the efficacy of ChAd63-MVA vectored vaccines expressing circumsporozoite protein and ME-TRAP against controlled human malaria infection in malaria-naive individuals. J Infect Dis. 2015 Apr 1;211(7):1076-86. doi: 10.1093/infdis/jiu579. Epub 2014 Oct 21.

Drugs

Indications