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Ebola Virus DiseasePhase 1NCT02368119

Ebola CVD-Mali #2000 (Bivalent) VRC-EBOAdc069-00-vp (cAd3-EBO)

A Phase 1 study testing VRC-EBOADC069-00-vp and MVA-EbolaZ in people with Ebola Virus Disease and Hemorrhagic Fever, run by University of Maryland, Baltimore at 1 site in Mali.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Ebola virus causes an infection known as Ebola virus disease (EVD). This it is generally a severe disease which can also lead to death. The 2014 outbreak of EVD in West Africa is the largest ever. Researchers want to develop a vaccine to prevent Ebola infection. Read more about this study

Who is it for?
Ages 18 to 65 yearsHealthy volunteers can take part
Conditions the study is for
Ebola Virus Disease, Hemorrhagic Fever
What is being tested?
VRC-EBOADC069-00-vp and MVA-EbolaZ
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
60 participants
Where
1 siteMali
Study dates
Mar 2015to 27 Sep 2016
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Healthy adults aged 18 to 65 years
  • Able and willing (in the Investigator's opinion) to comply with all study requirements
  • For females only, willingness to practice continuous effective contraception (see section 6.4.3) during the study and a negative urine pregnancy test on the day(s) of screening and vaccination
  • Agreement to refrain from blood donation during the course of the study
  • Provide written informed consent
  • Laboratory criteria within 30 days prior to enrollment:
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  • Hemoglobin ≥ 11.0 g/dL for women; ≥12.5 g/dL for men.
  • White blood cells (WBC) = 2,500-11,000 cells/mm3.
  • Neutrophil count = 1200 - 7000 cells/mm3
  • Lymphocyte count ≥ 800 cells/mm3
  • Eosinophil count = 0 - 500 cells/mm3
  • Platelets = 125,000 - 400,000/mm3
  • Alanine aminotransferase (ALT) = 10-45 IU/L
  • Serum creatinine = 54-145 umol/L.
  • HIV-uninfected as evidenced by a negative HIV diagnostic test.
  • Seronegative for hepatitis B surface antigen (HBsAg)
  • Negative β-HCG (human chorionic gonadotropin) pregnancy test (urine or serum) on day of enrollment if woman is presumed to be of reproductive potential.
  • For females only, willingness to practice continuous effective contraception (see section 6.4.3) during the study and a negative urine pregnancy test on the day(s) of screening and vaccination.

Who cannot join

  • Recent exposure to Ebola virus infection (this is not a post-exposure vaccine)
  • Participation in another research study involving receipt of an investigational product in the 30 days preceding enrolment, or planned use during the study period
  • Prior receipt of an investigational Ebola or Marburg vaccine, a chimpanzee adenovirus vectored vaccine, MVA vectored vaccine (for booster study) or any other investigational vaccine likely to impact on interpretation of the trial data
  • Receipt of any live, attenuated vaccine within 28 days prior to enrolment
  • Receipt of any subunit or killed vaccine within 14 days prior to enrolment
  • Administration of immunoglobulins and/or any blood products within the three months preceding the planned administration of the vaccine candidate
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  • Any confirmed or suspected immunosuppressive or immunodeficient state, including HIV infection; asplenia; recurrent, severe infections and chronic (more than 14 days) immunosuppressant medication within the past 6 months (inhaled and topical steroids are allowed)
  • History of allergic disease or reactions likely to be exacerbated by any component of the vaccine, including urticaria, respiratory difficulty or abdominal pain
  • Any history of hereditary angioedema, acquired angioedema, or idiopathic angioedema.
  • Any history of anaphylaxis in reaction to vaccination
  • Pregnancy, lactation or willingness/intention to become pregnant during the study
  • History of cancer (except basal cell carcinoma of the skin and cervical carcinoma in situ)
  • History of serious psychiatric condition
  • Poorly controlled asthma or thyroid disease
  • Seizure in the past 3 years or treatment for seizure disorder in the past 3 years
  • Bleeding disorder (eg. Factor deficiency, coagulopathy or platelet disorder), or prior history of significant bleeding or bruising following IM injections or venipuncture
  • Any known history of cardiac disease (for the booster portion of the study only)
  • Any other serious chronic illness requiring hospital specialist supervision
  • Current anti-tuberculosis prophylaxis or therapy
  • Suspected or known current alcohol abuse as defined by an alcohol intake of greater than 42 units every week
  • Suspected or known injecting drug abuse in the 5 years preceding enrolment
  • Any clinically significant abnormal finding on screening biochemistry or hematology blood tests
  • Any other significant disease, disorder or finding which may significantly increase the risk to the volunteer because of participation in the study, affect the ability of the volunteer to participate in the study or impair interpretation of the study data

Trial locations and contacts

1 site in 1 country.

Mali1 site
  • Centre pour le Developpement des Vaccins - Mali

    Bamako

Other trials in Mali

About this study

Official title: A PHASE IB, DOUBLE-BLIND, CLINICAL TRIAL TO EVALUATE THE SAFETY, TOLERABILITY AND IMMUNOGENICITY OF TWO DIFFERENT DOSAGE LEVELS OF EBOLA CHIMPANZEE ADENOVIRUS VECTOR VACCINE "VRC-EBOADC069-00-VP (cAd3-EBO)" AND THE HETEROLOGOUS PRIME-BOOST CANDIDATE VACCINE REGIMEN OF cAD3-EBO FOLLOWED BY MVA-VECTORED VACCINE IN HEALTHY ADULTS, 18-65 YEARS OF AGE, IN BAMAKO, MALI

Ebola virus causes an infection known as Ebola virus disease (EVD). This it is generally a severe disease which can also lead to death. The 2014 outbreak of EVD in West Africa is the largest ever. Researchers want to develop a vaccine to prevent Ebola infection.

This study will assess the safety of a single dose of the bivalent Ebola Zaire candidate vaccine VRC-EBOADC069-00-VP (cAD3-EBO) when administered to healthy Malian adult volunteers, age 18-65 years (mostly health care workers and other front line workers [e.g., individuals who incinerate contaminated materials]), at one of 2 dosage levels, 2.0 x 10(10) vp or 2 x 10(11) vp. It is impossible for someone to get an Ebola infection from this vaccine.

Read more

Heterologous booster dose allocation - Each participant will be offered the opportunity to be included in the booster step of this study. After obtaining consent and the additional review of pertinent medical history, participants in each group will be randomized to receive the candidate booster vaccine, MVA-EbolaZ or placebo.

This will be the first clinical trial in Mali with bivalent cAd3-based Ebola vaccine and the first where the dosage level contains > 10(11) vp. It follows completion of a Phase Ib trial in Malian health care workers that tested three dosage levels of monovalent cAd3-EBO Z vaccine. The data generated in West Africans (Mali) on the tolerability and immunogenicity of the bivalent vaccine will be compared to clinical and immunologic responses documented in in parallel studies in East African subjects (Uganda) and North American subjects (NIH, Bethesda, MD, USA).

Objectives:

  • To see if an Ebola vaccine is safe and to study immune responses to it.
  • To study the effect of the MVA-EbolaZ booster on the immune response

Eligibility:

  • Healthy adults ages 18-65.
Read the detailed description

This is a phase 1B, double-blind, randomized study to examine the safety, tolerability and immunogenicity of two different dosage levels of investigational Ebola vaccine.

The vaccine is a recombinant chimpanzee adenovirus Type 3-vectored Ebolavirus vaccine (cAd3-EBO), VRC-EBOADC069-00-VP. The vaccine encodes wild type (WT) glycoproteins (GP) from Zaire and Sudan species of Ebola virus. The primary objective is to assess the safety of a single dose intramuscular injection of the bivalent vaccine at one of 2 dosage levels, 2.0 X 10(10) vp or 2 x 10(11) vp and to assess the safety of the heterologous prime boost regimen of cAd3-EBO followed by MVA-EbolaZ or Phosphate Buffered Saline (PBS) placebo. A secondary objective is to assess the immunogenicity generated by 2 different dosage levels of the bivalent Ebola candidate vaccine.

Enrolment of Group 1 participants:

The first 20 Malian volunteers will be vaccinated in a staggered fashion. For safety reasons, the first 10 Malian subjects to receive a vaccine dose in Group 1 will be vaccinated on day 1 and we will wait 24 hours before vaccinating 10 subsequent volunteers. After these 20 volunteers in Group 1 have been vaccinated and followed up for 7 days, an interim safety review (ISR1) will be performed by the DSMB. Enrolment of subjects into Group 2 will commence only after the DSMB has assessed the data and indicated that it is safe to do so.

Half of Group 1 participants will be randomly assigned to receive the low dose and the remaining 10 will be randomized to receive the high dose.

Enrolment of Group 2 participants:

The 40 subjects in Group 2 will be accrued as rapidly as possible. The 40 Malian volunteers in Group 2 will be vaccinated over several days to limit wastage of the available doses of cAd3 EBO. As a result, a proposed scheme would be 10 per vaccination day. This could be adjusted as needed to limit wastage but no more than 20 participants would be vaccinated in 1 day. After the total of 40 volunteers in Group 2 have been vaccinated and followed up for 7 days, an interim safety review (ISR2) will be performed by the DSMB.

Prime Boost Vaccine Randomization 4-16 weeks after priming dose: Each participant will be offered the opportunity to be included in the booster step of this study. After obtaining consent and the additional review of pertinent medical history, participants in each group will be randomized to receive the candidate booster vaccine, MVA-EbolaZ or PBS placebo

Being tested
VRC-EBOADC069-00-vp, MVA-EbolaZ, Placebo
Medical subject headings
Hemorrhagic Fever, Ebola, Hemorrhagic Fevers, Viral

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • VRC-EBOADC069-00-vpBiological

    Also called cAd3-EBO at 2x10(10) vp

    IM Injection of cAd3-EBO bivalent (Zaire plus Sudan) vaccine (2 x 10(10) vp)

  • VRC-EBOADC069-00-vpBiological

    Also called cAd3-EBO at 2x10(11) vp

    IM Injection of cAd3-EBO bivalent (Zaire plus Sudan) vaccine (2 x 10(11) vp)

  • MVA-EbolaZBiological

    IM injection of MVA-EbolaZ vaccine

  • PlaceboOther

    IM injection injection of Phosphate Buffered Saline

Study groups in NCT02368119
Study groupRoleWhat they receive
Group 1ExperimentalVRC-EBOADC069-00 VP (cAd3-EBO bivalent (Zaire plus Sudan) vaccine (2 x 10(10) vp (n=10) or VRC-EBOADC069-00 VP (cAd3-EBO bivalent (Zaire plus Sudan) vaccine (2 x 10(11) vp (n=10). Randomization to booster of MVA-EbolaZ or PBS placebo will be completed 4 to 16 weeks after priming dose.
Receives: Biological: VRC-EBOADC069-00-vp; Biological: MVA-EbolaZ; Other: Placebo
Group 2ExperimentalVRC-EBOADC069-00 VP (cAd3-EBO bivalent (Zaire plus Sudan) vaccine (2 x 10(10) vp (n=20) or VRC-EBOADC069-00 VP (cAd3-EBO bivalent (Zaire plus Sudan) vaccine (2 x 10(11) vp (n=20). Randomization to booster of MVA-EbolaZ or PBS placebo will be completed 4 to 16 weeks after priming dose.
Receives: Biological: VRC-EBOADC069-00-vp; Biological: MVA-EbolaZ; Other: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Solicited local reactogenicity - Number of participants with the specific outcome

    Occurrence of solicited local signs and symptoms following vaccination

    Measured: For 7 days following each vaccination

  2. Solicited systemic reactogenicity - Number of participants with the specific outcome

    Occurrence of solicited systemic signs and symptoms following vaccination

    Measured: For 7 days following each vaccination

Secondary outcomes (1)
  1. Ebolavirus specific immunogenicity

    ELISA and neutralization antigen-specific assays for antibody responses and intracellular cytokine staining assay for T cell responses after vaccination

    Measured: At 7, 14, 28, 56, 112 and 168 days after vaccination. For those who participate in booster substudy, additional samples will be collected at these time points and no further samples would be timed from the priming dose

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted20 Feb 2015 (estimated)
  2. Study startMar 2015
  3. Primary completion27 Sep 2016
  4. Study completion27 Sep 2016

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
60 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02368119
Sponsor's protocol ID
HP-00062548
Status last verified
Sep 2019
First submitted
5 Feb 2015
Last updated
26 Sep 2019
Results posted
No
Data monitoring committee
Yes
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing VRC-EBOADC069-00-vp and MVA-EbolaZ in people with Ebola Virus Disease and Hemorrhagic Fever, run by University of Maryland, Baltimore at 1 site in Mali.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 18 inclusion and 23 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 26 Sep 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Mali. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Solicited local reactogenicity - Number of participants with the specific outcome (time frame: For 7 days following each vaccination). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Sep 2019.

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