The Safety and Immunogenicity of a TB Vaccine; MVA85A, in Healthy Volunteers Who Are Infected With HIV

Summary

This study is designed to evaluate the safety of MVA85A in healthy volunteers in the UK who are infected with HIV. In phase I studies, a single vaccination with MVA85A, when administered at a dose of 5 x 10\^7pfu intradermally, has been shown to be safe in both mycobacterially naïve individuals, those previously vaccinated with BCG and latently infected individuals. Additionally, 5 x 10\^7 pfu MVA containing HIV antigens administered twice, 4 weeks apart, in HIV positive individuals, is safe. We will use 5 x 107 pfu MVA85A intradermally in this study. Subjects will be identified from HIV clinics in the Oxford Radcliffe Hospitals NHS Trust and also from Swindon and Marlborough NHS Trust and St. Mary's Hospital NHS Trust if our recruitment targets are not met.

Timeline

Start

2006-11

Primary completion

2010-07

Completion

2010-07

Publications

• Background Colditz GA, Brewer TF, Berkey CS, Wilson ME, Burdick E, Fineberg HV, Mosteller F. Efficacy of BCG vaccine in the prevention of tuberculosis. Meta-analysis of the published literature. JAMA. 1994 Mar 2;271(9):698-702.
• Background McShane H, Brookes R, Gilbert SC, Hill AV. Enhanced immunogenicity of CD4(+) t-cell responses and protective efficacy of a DNA-modified vaccinia virus Ankara prime-boost vaccination regimen for murine tuberculosis. Infect Immun. 2001 Feb;69(2):681-6. doi: 10.1128/IAI.69.2.681-686.2001.
• Background Huygen K, Content J, Denis O, Montgomery DL, Yawman AM, Deck RR, DeWitt CM, Orme IM, Baldwin S, D'Souza C, Drowart A, Lozes E, Vandenbussche P, Van Vooren JP, Liu MA, Ulmer JB. Immunogenicity and protective efficacy of a tuberculosis DNA vaccine. Nat Med. 1996 Aug;2(8):893-8. doi: 10.1038/nm0896-893.
• Background Cosma A, Nagaraj R, Buhler S, Hinkula J, Busch DH, Sutter G, Goebel FD, Erfle V. Therapeutic vaccination with MVA-HIV-1 nef elicits Nef-specific T-helper cell responses in chronically HIV-1 infected individuals. Vaccine. 2003 Dec 8;22(1):21-9. doi: 10.1016/s0264-410x(03)00538-3.
• Background Bejon P, Peshu N, Gilbert SC, Lowe BS, Molyneux CS, Forsdyke J, Lang T, Hill AV, Marsh K. Safety profile of the viral vectors of attenuated fowlpox strain FP9 and modified vaccinia virus Ankara recombinant for either of 2 preerythrocytic malaria antigens, ME-TRAP or the circumsporozoite protein, in children and adults in Kenya. Clin Infect Dis. 2006 Apr 15;42(8):1102-10. doi: 10.1086/501459. Epub 2006 Mar 14.
• Background Goonetilleke NP, McShane H, Hannan CM, Anderson RJ, Brookes RH, Hill AV. Enhanced immunogenicity and protective efficacy against Mycobacterium tuberculosis of bacille Calmette-Guerin vaccine using mucosal administration and boosting with a recombinant modified vaccinia virus Ankara. J Immunol. 2003 Aug 1;171(3):1602-9. doi: 10.4049/jimmunol.171.3.1602.
• Background McShane H, Pathan AA, Sander CR, Keating SM, Gilbert SC, Huygen K, Fletcher HA, Hill AV. Recombinant modified vaccinia virus Ankara expressing antigen 85A boosts BCG-primed and naturally acquired antimycobacterial immunity in humans. Nat Med. 2004 Nov;10(11):1240-4. doi: 10.1038/nm1128. Epub 2004 Oct 24.

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