A Study of MVA85A in Healthy Infants

This study has been completed.
Sponsor:
Collaborators:
University of Oxford
University of Cape Town
Information provided by (Responsible Party):
Aeras
ClinicalTrials.gov Identifier:
NCT00953927
First received: July 31, 2009
Last updated: February 4, 2014
Last verified: February 2014
Results First Received: October 23, 2013  
Study Type: Interventional
Study Design: Allocation: Randomized;   Endpoint Classification: Safety/Efficacy Study;   Intervention Model: Parallel Assignment;   Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor);   Primary Purpose: Prevention
Condition: Tuberculosis
Interventions: Biological: MVA85A/AERAS-485
Biological: Candida Skin Test Antigen

  Participant Flow
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Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
No text entered.

Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
No text entered.

Reporting Groups
  Description
Investigational Vaccine MVA85A/AERAS-485; subset into cohorts to explore different safety and immunogenicity tests.
Control Group Candida Skin Test Antigen control; subset into cohorts to explore different safety and immunogenicity tests.

Participant Flow:   Overall Study
    Investigational Vaccine     Control Group  
STARTED     1399     1398  
COMPLETED     1294     1303  
NOT COMPLETED     105     95  
Lost to Follow-up                 61                 65  
Withdrawal by Subject                 36                 25  
Death                 7                 4  
Other study discontinuation                 1                 1  



  Baseline Characteristics


  Outcome Measures
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1.  Primary:   To Evaluate the Safety Profile of MVA85A/AERAS-485 in Bacillus Calmette-Guerin (BCG) -Vaccinated, HIV-negative Infants.   [ Time Frame: AEs recorded 28 days post-vaccination; SAEs recorded for entire study period. ]

2.  Secondary:   To Evaluate the Efficacy of the MVA85A/AERAS-485 Vaccine Compared to Controls in Prevention of Tuberculosis Using an Endpoint Derived From Epidemiological Cohort Surveys in BCG Vaccinated Infants.   [ Time Frame: 15 to 36 months post-vaccination ]

3.  Secondary:   To Evaluate the Immunogenicity of the MVA85A/AERAS-485 Vaccine Compared to Controls as Described by Flow Cytometric Intracellular Cytokine Staining of CD4 and CD8 T Cells.   [ Time Frame: 28 days post-vaccination ]

4.  Secondary:   To Evaluate the Immunogenicity of the MVA85A/AERAS-485 Vaccine Compared to Controls as Described by the ex Vivo Enzyme Linked Immunospot (ELISPOT) Test Used in Previous MVA85A/AERAS-485 Human Trials.   [ Time Frame: 7 days post-vaccination ]

5.  Secondary:   To Evaluate the Immunogenicity of the MVA85A/AERAS-485 Vaccine Compared to Controls as Described by the University of Capetown (UCT) Whole Blood Intracellular Cytokine Assay.   [ Time Frame: 28 days post-vaccination ]
  Hide Outcome Measure 5

Measure Type Secondary
Measure Title To Evaluate the Immunogenicity of the MVA85A/AERAS-485 Vaccine Compared to Controls as Described by the University of Capetown (UCT) Whole Blood Intracellular Cytokine Assay.
Measure Description Frequencies of CD4 and CD8 T cells expressing cytokines (IFN-γ, IL-2 and TNF-α) following stimulation of whole blood with an Ag85A peptide pool were also measured by flow cytometry for a subset of infants.
Time Frame 28 days post-vaccination  
Safety Issue No  

Population Description
Explanation of how the number of participants for analysis was determined. Includes whether analysis was per protocol, intention to treat, or another method. Also provides relevant details such as imputation technique, as appropriate.
Pre-specified population subset

Reporting Groups
  Description
Investigational Vaccine MVA85A/AERAS-485; subset into cohorts to explore different safety and immunogenicity tests.
Control Group Candida Skin Test Antigen control; subset into cohorts to explore different safety and immunogenicity tests.

Measured Values
    Investigational Vaccine     Control Group  
Number of Participants Analyzed  
[units: participants]
  17     19  
To Evaluate the Immunogenicity of the MVA85A/AERAS-485 Vaccine Compared to Controls as Described by the University of Capetown (UCT) Whole Blood Intracellular Cytokine Assay.  
[units: percentage of cytokine expressing cells]
Median ( 95% Confidence Interval )
   
Percent IL2/IFN-gamma/TNF expressing CD4 cells     0.030  
  ( 0.022 to 0.079 )  
  0.001  
  ( 0.000 to 0.001 )  
Percent IL2/IFN-gamma/ TNF expressing CD8 cells     0.000  
  ( 0.000 to 0.000 )  
  0.000  
  ( 0.000 to 0.000 )  

No statistical analysis provided for To Evaluate the Immunogenicity of the MVA85A/AERAS-485 Vaccine Compared to Controls as Described by the University of Capetown (UCT) Whole Blood Intracellular Cytokine Assay.



6.  Secondary:   To Discover Correlates of Protection From Tuberculosis in Infants Vaccinated With MVA85A/AERAS-485.   [ Time Frame: 15 to 36 months post-vaccination ]

7.  Secondary:   To Evaluate the QuantiFERON Conversion Rate at Final Study Assessment in MVA85A/AERAS-485 Recipients Compared to Controls in Infants Without a Diagnosis of Tuberculosis During the Trial.   [ Time Frame: 15 to 36 months post-vaccination ]


  Serious Adverse Events


  Other Adverse Events


  Limitations and Caveats
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Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
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