- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02712424
DAR-901 TB Booster Vaccine to Prevent TB in Adolescents (DAR-PIA)
A Phase 2, Randomized, Placebo-Controlled, Double-Blind, Study of the Prevention of Infection With Mycobacterium Tuberculosis Among Adolescents Who Have Previously Received BCG
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
DAR-901 whole cell booster vaccine to prevent TB infection in adolescents ("DAR-PIA")
This is a Phase II, 3-injection, randomized, controlled trial of DAR-901 to be conducted in 13-15 year old adolescents in Tanzania previously immunized with BCG. DAR-901 is a whole cell inactivated non-tuberculous mycobacterial vaccine manufactured from the Master Cell Bank of SRL-172 that was used in the successful Phase III DarDar Trial in Tanzania. The goals are to establish the safety and efficacy of DAR-901 in preventing infection with TB. The 1 mg dose was selected during the current Phase I dose-escalation trial of DAR-901 in the US being conducted by Dartmouth and Aeras. The 1 mg dose corresponds to the dose of SRL 172 used in the DarDar Trial.
All subjects will be screened by the T-spot® IGRA (Oxford Immunotec, Oxford, England) for evidence of TB infection. All screened subjects will have a structured interview to identify risk factors for TB infection (=positive IGRA). IGRA-positive subjects will be referred for further evaluation and will not be entered in the immunization phase of the trial.
It is estimated that 1000 adolescents will need to be screened to identify a total of 650 IGRA-negative adolescents in the immunization phase of the trial. Subjects will be and randomized 1:1 to DAR-901 or saline control at 0, 2 and 4 months. Doses will be administered by intradermal (ID) injection in the deltoid area. IGRA testing will be repeated before dose 2, at 14 months, and again at 24 months.
This three year study began in the first quarter of 2016 in Dar es Salaam, is funded by GHIT-Japan and will be directed by Geisel School of Medicine at Dartmouth (PI, F. von Reyn) with collaborators at Muhimbili University of Health and Allied Sciences (MUHAS) in Tanzania and Tokyo Medical and Dental University in Japan.
Study Type
Enrollment (Actual)
Phase
- Phase 2
Contacts and Locations
Study Locations
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-
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Dar es Salaam, Tanzania
- Muhimbili University of Health and Allied Sciences
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria: Negative IGRA at baseline -
Exclusion Criteria: Pregnancy, serious underlying disease
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Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: DAR-901
0.1 mL intradermal injection of 1 mg DAR-901
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Placebo Comparator: Placebo
0.1 mL intradermal injection of sterile saline for human use
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
New Infection With Mycobacterium Tuberculosis
Time Frame: 3 years
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New infection with TB is based on conversion of IGRA
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3 years
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Persistent New Infection With M. Tuberculosis
Time Frame: 3 years
|
New positive IGRA that is also positive on repeat ≥3 mos later
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3 years
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: C Fordham von Reyn, MD, Dartmouth-Hitchcock Medical Center
Publications and helpful links
General Publications
- Munseri P, Said J, Amour M, Magohe A, Matee M, Rees CA, Mackenzie T, Tvaroha S, Bailey-Kellogg C, Maro I, Wieland-Alter W, Adams LV, Horsburgh CR, Nakamura K, Arbeit RD, Pallangyo K, von Reyn CF. DAR-901 vaccine for the prevention of infection with Mycobacterium tuberculosis among BCG-immunized adolescents in Tanzania: A randomized controlled, double-blind phase 2b trial. Vaccine. 2020 Oct 27;38(46):7239-7245. doi: 10.1016/j.vaccine.2020.09.055. Epub 2020 Sep 29.
- Rees CA, Pineros DB, Amour M, Munseri P, Said J, Magohe A, Matee M, Pallangyo K, von Reyn CF. The potential of CBC-derived ratios (monocyte-to-lymphocyte, neutrophil-to-lymphocyte, and platelet-to-lymphocyte) to predict or diagnose incident TB infection in Tanzanian adolescents. BMC Infect Dis. 2020 Aug 18;20(1):609. doi: 10.1186/s12879-020-05331-w.
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 29001
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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