PMID- 26529238 OWN - NLM STAT- MEDLINE DCOM- 20160610 LR - 20240222 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 11 DP - 2015 TI - A Phase I, Open-Label Trial, Evaluating the Safety and Immunogenicity of Candidate Tuberculosis Vaccines AERAS-402 and MVA85A, Administered by Prime-Boost Regime in BCG-Vaccinated Healthy Adults. PG - e0141687 LID - 10.1371/journal.pone.0141687 [doi] LID - e0141687 AB - BACKGROUND: MVA85A and AERAS-402 are two clinically advanced viral vectored TB vaccine candidates expressing Mycobacterium tuberculosis antigens designed to boost BCG-induced immunity. Clinical trials with candidate malaria vaccines have demonstrated that adenoviral vector based priming immunisation, followed by MVA vector boost, induced high levels of immunity. We present the safety and immunogenicity results of the first clinical trial to evaluate this immunisation strategy in TB. METHODS: In this phase 1, open-label trial, 40 healthy previously BCG-vaccinated participants were enrolled into three treatment groups and vaccinated with 1 or 2 doses of AERAS-402 followed by MVA85A; or 3 doses of AERAS-402. RESULTS: Most related adverse events (AEs) were mild and there were no vaccine related serious AEs. Boosting AERAS-402 with MVA85A significantly increased Ag85A-specific T-cell responses from day of vaccination. Two priming doses of AERAS-402 followed by MVA85A boost, resulted in a significantly higher AUC post-peak Ag85A response compared to three doses of AERAS-402 and historical data with MVA85A vaccination alone. The frequency of CD8+ T-cells producing IFN-gamma, TNF-alpha and IL-2 was highest in the group receiving two priming doses of AERAS-402 followed by MVA85A. CONCLUSIONS: Vaccination with AERAS-402 followed by MVA85A was safe and increased the durability of antigen specific T-cell responses and the frequency and polyfunctionality of CD8+ T-cells, which may be important in protection against TB. Further clinical trials with adenoviral prime-MVA85A boost regimens are merited to optimise vaccination intervals, dose and route of immunisation and to evaluate this strategy in the target population in TB high burden countries. TRIAL REGISTRATION: ClinicalTrials.gov NCT01683773. FAU - Sheehan, Sharon AU - Sheehan S AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. FAU - Harris, Stephanie A AU - Harris SA AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. FAU - Satti, Iman AU - Satti I AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. FAU - Hokey, David A AU - Hokey DA AD - Aeras Global TB Vaccine Foundation, Rockville, MD, United States of America. FAU - Dheenadhayalan, Veerabadran AU - Dheenadhayalan V AD - Aeras Global TB Vaccine Foundation, Rockville, MD, United States of America. FAU - Stockdale, Lisa AU - Stockdale L AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. FAU - Manjaly Thomas, Zita-Rose AU - Manjaly Thomas ZR AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. FAU - Minhinnick, Alice AU - Minhinnick A AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. FAU - Wilkie, Morven AU - Wilkie M AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. FAU - Vermaak, Samantha AU - Vermaak S AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. FAU - Meyer, Joel AU - Meyer J AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. FAU - O'Shea, Matthew K AU - O'Shea MK AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. FAU - Pau, Maria Grazia AU - Pau MG AD - Janssen Infectious Diseases and Vaccines (formerly Crucell), Leiden, The Netherlands. FAU - Versteege, Isabella AU - Versteege I AD - Janssen Infectious Diseases and Vaccines (formerly Crucell), Leiden, The Netherlands. FAU - Douoguih, Macaya AU - Douoguih M AD - Janssen Infectious Diseases and Vaccines (formerly Crucell), Leiden, The Netherlands. FAU - Hendriks, Jenny AU - Hendriks J AD - Janssen Infectious Diseases and Vaccines (formerly Crucell), Leiden, The Netherlands. FAU - Sadoff, Jerald AU - Sadoff J AD - Janssen Infectious Diseases and Vaccines (formerly Crucell), Leiden, The Netherlands. FAU - Landry, Bernard AU - Landry B AD - Aeras Global TB Vaccine Foundation, Rockville, MD, United States of America. FAU - Moss, Paul AU - Moss P AD - School of Cancer Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom. FAU - McShane, Helen AU - McShane H AD - The Jenner Institute, University of Oxford, Oxford, OX3 7DQ, United Kingdom. LA - eng SI - ClinicalTrials.gov/NCT01683773 GR - Wellcome Trust/United Kingdom GR - 095780/Wellcome Trust/United Kingdom PT - Clinical Trial, Phase I PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151103 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Antigens, Bacterial) RN - 0 (Cytokines) RN - 0 (Tuberculosis Vaccines) SB - IM MH - *Adenoviridae MH - Adolescent MH - Adult MH - *Antigens, Bacterial/administration & dosage/immunology MH - CD8-Positive T-Lymphocytes/immunology MH - Cytokines/immunology MH - Female MH - Humans MH - *Immunization, Secondary MH - Male MH - Middle Aged MH - Mycobacterium bovis/*immunology MH - Mycobacterium tuberculosis/*immunology MH - *Tuberculosis Vaccines/administration & dosage/immunology PMC - PMC4631471 COIS- Competing Interests: MGP, IV, MD, JH and JS are all employees of Janssen, J&J (formerly Crucell). The salaries for these authors were provided by Janssen, J&J (formerly Crucell). Janssen, J&J did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials. The specific roles of these authors are articulated in the 'author contributions' section. No other authors have conflicts of interest. EDAT- 2015/11/04 06:00 MHDA- 2016/06/11 06:00 PMCR- 2015/11/03 CRDT- 2015/11/04 06:00 PHST- 2015/07/12 00:00 [received] PHST- 2015/10/07 00:00 [accepted] PHST- 2015/11/04 06:00 [entrez] PHST- 2015/11/04 06:00 [pubmed] PHST- 2016/06/11 06:00 [medline] PHST- 2015/11/03 00:00 [pmc-release] AID - PONE-D-15-25759 [pii] AID - 10.1371/journal.pone.0141687 [doi] PST - epublish SO - PLoS One. 2015 Nov 3;10(11):e0141687. doi: 10.1371/journal.pone.0141687. eCollection 2015.