A Study to Find Out if the New Ebola Vaccine is Safe and Stimulates Immunity That Might Protect Adults in Kilifi, Kenya.

April 13, 2016 updated by: University of Oxford

A Phase 1, Open-Label, Dose-Escalation Study to Evaluate the Safety and Immunogenicity of the BPSC1001 (VSVΔG-ZEBOV) Ebola Virus Vaccine Candidate in Healthy Adult Volunteers in Kilifi, Kenya.

Previous Ebola outbreaks have been limited to individual countries and contained by infection control activities. The current outbreak in West Africa is international, and air travel has resulted in a number of infected travellers crossing national borders. There are currently no specific treatments generally available for Ebola and the mortality is high, particularly in countries with limited intensive care facilities. There is currently no vaccine and the personal protection required by healthcare workers treating patients is cumbersome and requires full compliance to be protective.

There is now a consortium (VEBCON collaboration) of four clinical centres (in Kenya, Gabon, Switzerland and Germany), WHO and New Link Genetics (the vaccine manufacturer) under which this study will be conducted. The investigators are conducting this trial, a Phase I, open-label, dose escalation trial, designed to establish safety, tolerability and immunogenicity of two doses of VSVΔG-ZEBOV, an Ebola Virus Vaccine Candidate for the first time in sub-Saharan African populations.

The investigators plan to vaccinate 40 volunteers in Kenya. The trial will be conducted at the KEMRI-CGMR Coast site where healthcare workers (both clinical and laboratory) will be the primary target population as they are likely to be the recipients of a protective vaccine. The investigators will vaccinate a cohort of 20 volunteers at a low dose and then vaccinate a further cohort of 20 volunteers at full dose. Each volunteer will receive one dose of the vaccine. The investigators will follow them up for a period of one year looking to their safety and immunogenicity endpoints.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

This study is being conducted to assess safety and immunogenicity of an experimental ebola vaccine.

An outbreak due to the Ebola Zaire (ZEBOV) strain of unprecedented magnitude and scope and with a high mortality continues to spread across West Africa. No vaccine is currently licensed.

The specific opportunity at hand with rVSVΔG-ZEBOV-GP (BPSC1001) is to achieve long-lasting protective immunity to ZEBOV on a time scale of weeks in humans upon a single-shot vaccination, offering a discrete benefit over prime-boost vaccination protocols. The current outbreak represents a global health emergency and the need for access to therapeutic intervention and vaccines is paramount.

The vaccine investigated in this study might provide a critical tool to suppress future out-breaks of EVD in areas at risk.

This study is 1 of 4 clinical trials currently conducted as part of the WHO-led VEBCON consortium, aiming to generate harmonized data for the rVSVΔG-ZEBOV-GP (BPSC1001) vaccine candidate to allow optimized rapid decisions on dose and safety.

Study Type

Interventional

Enrollment (Anticipated)

40

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Kenya
    • Coast
      • Kilifi, Coast, Kenya, 80108
        • KEMRI Wellcome Trust Research Programme

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 55 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • • Have provided written informed consent prior to screening procedures (i.e. participants must be literate).

    • Healthy adult male or non-pregnant, non-lactating female, ages 18 to 55 (inclusive) at the time of screening
    • Free of clinically significant health problems, as determined by pertinent medical history, clinical examination and blood tests at screening
    • Available, able, and willing to participate for all study visits and procedures
    • Negative pregnancy-test for female volunteers
    • Females, of non-childbearing potential who are post-menopausal (i.e. ≥ one year without menses) or surgically sterilized (tubal ligation, bilateral oophorectomy, or hysterectomy)
    • Females, of childbearing potential, who are willing to use effective methods of contraception for 14 days before vaccination and 30 days after vaccination.
    • Males who are willing to use effective contraception following vaccination for a period of one week.
    • Be willing to minimize blood and body fluid exposure of others for 5 days after vaccination

Exclusion Criteria:

  • • History of severe local or systemic reactions to any vaccination or a history of severe allergic reactions.

    • Known allergy to the components of the BPSC1001 vaccine product
    • Unable or unwilling to stay in the study area for the period of the study and comply with study procedures.
    • Ongoing participation in another clinical trial
    • Receipt of licensed vaccines within 14 days of planned study immunization (30 days for live vaccines)
    • Acute or chronic, clinically significant psychiatric, hematologic, pulmonary, cardiovascular, or hepatic or renal functional abnormality as determined by the investigator based on medical history, physical exam, and/or laboratory screening test
    • Any serologic evidence of hepatitis B SAg or HIV infection.
    • Any confirmed or suspected immunosuppressive or immunodeficient condition, cytotoxic therapy in the previous 5 years, and/or uncontrolled diabetes
    • Have an active malignancy or history of metastatic or hematologic malignancy
    • Suspected or known alcohol and/or illicit drug abuse within the past 5 years
    • Moderate or severe illness and/or fever >38°C within 2 weeks prior to vaccination
    • Pregnant or lactating woman or a woman who intends to become pregnant within 30 days following vaccination.
    • Administration of immunoglobulins and/or any blood products within the 120 days preceding study entry or planned administration during the study period
    • Administration of chronic (defined as more than 14 days) immunosuppressant's or other immune modifying drugs within 6 months of study entry
    • Any other significant finding that in the opinion of the investigator would increase the risk of the individual having an adverse outcome from participating in this study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Low dose arm
The low dose cohort will receive an intramuscular (deltoid) injection of 3x106 pfu of VSV-ZEBOV vaccine.
Biological: VSV-ZEBOV
VSV-ZEBOV
Other Names:
  • BSPSC1001
Experimental: Full dose arm
The full dose cohort will receive an intramuscular (deltoid) injection1x107 pfu of VSV-ZEBOV vaccine.
Biological: VSV-ZEBOV
VSV-ZEBOV
Other Names:
  • BSPSC1001

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
The nature, frequency, and severity of adverse events (AEs) and/or serious adverse events (SAEs) with causal link to the study intervention
Time Frame: Days 0-30
To evaluate the safety and tolerability of two different doses of VSVΔG-ZEBOV vaccine
Days 0-30

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Incidence and severity of local and systemic reactogenicity signs and symptoms
Time Frame: Day 0-28
Day 0-28
Incidence of unsolicited adverse events (AEs)
Time Frame: Days 0-28
Days 0-28
Incidence of serious adverse events (SAEs)
Time Frame: Days 0-365
Days 0-365
Distribution of values of safety laboratory measures at baseline and at follow-up visits post-vaccination
Time Frame: Day 0-30
The distribution of values of safety laboratory measures will include the assessment of complete blood count (with differential white cell count), creatinine and alanine transaminase levels at baseline and day 7 and 30 following vaccine administration.
Day 0-30
Persistence of titres of ZEBOV-specific IgG antibodies
Time Frame: 0-180 days
0-180 days
Detection, magnitude and duration of VSV-ZEBOV viraemia and shedding
Time Frame: Day 1, 3 and 7
The detection and concentration (copies/ml) of rVSV (viral shedding) will determined in blood, urine, or saliva samples to evaluate VSV vaccine viraemia following vaccine administration. The duration will be determined by the last timepoint with detectable viraemia.This is a composite measure.
Day 1, 3 and 7
Titres of neutralising ZEBOV-specific IgG antibodies
Time Frame: Days 7, 30, 60, 90, 180 and 365
Days 7, 30, 60, 90, 180 and 365
Pattern of ZEBOV specific T cell responses
Time Frame: Days 7, 30, 90, 180 and 365
Days 7, 30, 90, 180 and 365
Titers of ZEBOV-specific IgG antibodies
Time Frame: Days 0-28
Important for dose selection
Days 0-28

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Oxford

Collaborators

University Hospital, Geneva
Wellcome Trust
World Health Organization
Universitätsklinikum Hamburg-Eppendorf
Philipps University Marburg Medical Center
Albert Schweitzer Hospital
Institute of Tropical Medicine, University of Tuebingen

Investigators

  • Principal Investigator: Philip Bejon, MD, PhD, KEMRI-Wellcome Trust Collaborative Research Program

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

December 1, 2014

Primary Completion (Actual)

February 1, 2016

Study Completion (Anticipated)

September 1, 2016

Study Registration Dates

First Submitted

November 11, 2014

First Submitted That Met QC Criteria

November 18, 2014

First Posted (Estimate)

November 21, 2014

Study Record Updates

Last Update Posted (Estimate)

April 14, 2016

Last Update Submitted That Met QC Criteria

April 13, 2016

Last Verified

April 1, 2016

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • OXTREC 71-14
  • SSC 2976 (Other Identifier: KEMRI Scientific Steering Committee)

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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