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A Study to Determine the Safety and Immunogenicity of a Candidate MAP Vaccines ChAdOx2 HAV and MVA in Healthy Adult Volunteers

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT03027193
Recruitment Status : Completed
First Posted : January 23, 2017
Last Update Posted : February 25, 2020
Sponsor:
Information provided by (Responsible Party):
University of Oxford

Study Description
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Brief Summary:

A phase I dose escalation study to assess the safety and immunogenicity of the candidate vaccines ChAdOx2 HAV and MVA HAV in healthy volunteers.

Volunteers will be recruited and vaccinated in Oxford, England.

All vaccinations will be administered intramuscularly. Three different doses of the ChAdOx2 HAV will be tested (5x10^9 vp, 2.5x10^10 vp and 5x10^10vp). MVA HAV will be assessed at 2 different doses (5x10^7 and 2x10^8 pfu)

The total duration of the study will be 52 weeks from the day of enrolment for volunteers receiving ChAdOx2 HAV only, 12 weeks for volunteers receiving MVA HAV only and 20 weeks for volunteers receiving ChAdOx2 HAV and MVA HAV.


Condition or disease Intervention/treatment Phase
Crohn Disease Mycobacterium Avium Subspecies Paratuberculosis Biological: ChAdOx2 HAV Biological: MVA HAV Phase 1

Detailed Description:

This is a phase I, open label, dose escalation trial to assess the safety and immunogenicity of the ChAdOx2 and MVA HAV vaccines against Mycobacterium avium subspecies paratuberculosis (MAP) in healthy volunteers

There will be 5 study groups with a total of 28 volunteers. ChAdOx2 HAV will be administered intramuscularly as a single vaccination at 3 different doses: 5x10^9 vp (group 1), 2.5x10^10 (group 2) and 5x10^10 vp (group 3) and as a prime vaccine in group 6 (prime/boost group). MVA HAV will be administered intramuscularly as a single vaccination at 2 different doses: 5x10^7 pfu (group 4), 2x10^8 pfu (group 5) and as a boost vaccine in group 6 (prime/boost group)

Vaccination of groups will be sequential from Group 1 to Group 6 with interim safety reviews prior to dose escalation

Volunteers will be recruited and undergo screening visits, vaccination and clinic visits post-vaccination at the trial site. Blood samples for safety and immunology purposes will be performed on the visit time points indicated in the schedule of attendances.

Safety will be assessed by the frequency, incidence and nature of adverse events and serious adverse events arising during the study.

Study Design
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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 28 participants
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase I Clinical Trial to Determine the Safety and Immunogenicity of the Candidate Mycobacterium Avium Subspecies Paratuberculosis (MAP) Vaccines ChAdOx2 HAV and MVA HAV in Healthy Adult Volunteers
Actual Study Start Date : March 15, 2017
Actual Primary Completion Date : January 16, 2020
Actual Study Completion Date : January 16, 2020

Resource links provided by the National Library of Medicine


Arms and Interventions
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Arm Intervention/treatment
Experimental: Group 1
Group 1 volunteers (n= 3 to 6) will be administered ChAdOx2 HAV, 5 x 10^9 vp through intramuscular route.
 Biological: ChAdOx2 HAV
The ChAdOx2 HAV vaccine consists of the replication-deficient simian adenovirus vector ChAdOx2, containing the Mycobacterium avium subspecies paratuberculosis (MAP) antigens
Experimental: Group 2
Group 2 volunteers (n= 3 to 6) will be administered ChAdOx2 HAV, 2.5 x 10^10 vp through intramuscular route.
 Biological: ChAdOx2 HAV
The ChAdOx2 HAV vaccine consists of the replication-deficient simian adenovirus vector ChAdOx2, containing the Mycobacterium avium subspecies paratuberculosis (MAP) antigens
Experimental: Group 3
Group 3 volunteers (n= 3 to 6) will be administered ChAdOx2 HAV, 5 x 10^10 vp through intramuscular route.
 Biological: ChAdOx2 HAV
The ChAdOx2 HAV vaccine consists of the replication-deficient simian adenovirus vector ChAdOx2, containing the Mycobacterium avium subspecies paratuberculosis (MAP) antigens
Experimental: Group 4
Group 4 volunteers (n= 3) will be administered MVA HAV, 5 x 10^7 pfu through intramuscular route.
 Biological: MVA HAV
The MVA HAV vaccine consists of the replication deficient modified vaccinia virus Ankara (MVA) containing the Mycobacterium avium subspecies paratuberculosis (MAP) antigens.
Experimental: Group 5
Group 5 volunteers (n= 3) will be administered MVA HAV, 2 x 10^8 pfu through intramuscular route.
 Biological: MVA HAV
The MVA HAV vaccine consists of the replication deficient modified vaccinia virus Ankara (MVA) containing the Mycobacterium avium subspecies paratuberculosis (MAP) antigens.
Experimental: Group 6
Group 6 volunteers (n= 10) will be administered ChAdOx2 HAV, 5 x 10^10 vp followed by MVA HAV, 2 x 10^8 pfu (8 weeks apart) through intramuscular route.
 Biological: ChAdOx2 HAV
The ChAdOx2 HAV vaccine consists of the replication-deficient simian adenovirus vector ChAdOx2, containing the Mycobacterium avium subspecies paratuberculosis (MAP) antigens

Biological: MVA HAV
The MVA HAV vaccine consists of the replication deficient modified vaccinia virus Ankara (MVA) containing the Mycobacterium avium subspecies paratuberculosis (MAP) antigens.


Outcome Measures
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Primary Outcome Measures :
  1. Occurrence of solicited and unsolicited local and systemic adverse events [ Time Frame: up to 28 days following vaccination ]
    The specific endpoints for safety and reactogenicity will be actively and passively collected data on adverse events. Change from baseline for safety laboratory measures will also be collected. Occurrence of serious adverse events will be collected during the whole study duration


Secondary Outcome Measures :
  1. Measures of Immunogenicity of ChAdOx2 HAV and MVA HAV [ Time Frame: Approximately 2 months post each vaccination ]
    To assess the immunogenicity of ChAdOx2 HAV and MVA HAV in healthy adult volunteers when administered alone and in a prime-boost regimen


Eligibility Criteria
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Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


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Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  1. Healthy adults aged 18 to 50 years
  2. Able and willing (in the Investigator's opinion) to comply with all study requirements
  3. Willing to allow the investigators to discuss the volunteer's medical history with their General Practitioner
  4. For females only, willingness to practice continuous effective contraception (see below) during the study and a negative pregnancy test on the day(s) of screening and vaccination
  5. Agreement to refrain from blood donation during the course of the study
  6. Provide written informed consent

Exclusion Criteria:

  1. Participation in another research study involving receipt of an investigational product in the 30 days preceding enrolment, or planned use during the study period
  2. Prior receipt of an investigational vaccine likely to impact on interpretation of the trial data.
  3. Prior receipt of an adenoviral vectored vaccine in the last 12 months
  4. Administration of immunoglobulins and/or any blood products within the three months preceding the planned administration of the vaccine candidate
  5. 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)
  6. History of allergic disease or reactions likely to be exacerbated by any component of the vaccine
  7. Any history of hereditary angioedema, acquired angioedema, or idiopathic angioedema.
  8. Any history of anaphylaxis in relation to vaccination
  9. Pregnancy, lactation or willingness/intention to become pregnant during the study
  10. History of cancer (except basal cell carcinoma of the skin and cervical carcinoma in situ)
  11. History of serious psychiatric condition likely to affect participation in the study
  12. Bleeding disorder (eg. Factor deficiency, coagulopathy or platelet disorder), or prior history of significant bleeding or bruising following IM injections or venepuncture
  13. Any other serious chronic illness requiring hospital specialist supervision
  14. Suspected or known current alcohol abuse as defined by an alcohol intake of greater than 42 units every week
  15. Suspected or known injecting drug abuse in the 5 years preceding enrolment
  16. Seropositive for hepatitis C (antibodies to HCV)
  17. Seropositive for hepatitis B surface antigen(HBsAg)
  18. Any clinically significant abnormal finding on screening biochemistry or haematology blood tests or urinalysis
  19. 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
  20. Inability of the study team to contact the volunteer's GP to confirm medical history and safety to participate.
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03027193


Locations
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United Kingdom
Centre for Clinical Vaccinology and Tropical Medicine, Churchill Hospital
Oxford, United Kingdom
Sponsors and Collaborators
University of Oxford
Investigators
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Principal Investigator: Adrian V Hill, DPhill FRCP Centre for Clinical Vaccinology and Tropical Medicine, Churchill Hosptal, Oxford, United Kingdom
More Information
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Responsible Party: University of Oxford
ClinicalTrials.gov Identifier: NCT03027193    
Other Study ID Numbers: HAV001
First Posted: January 23, 2017    Key Record Dates
Last Update Posted: February 25, 2020
Last Verified: May 2019

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by University of Oxford:
Vaccine
MAP
Additional relevant MeSH terms:
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Mycobacterium Infections
Mycobacterium avium-intracellulare Infection
Paratuberculosis
Crohn Disease
Inflammatory Bowel Diseases
Gastroenteritis
Gastrointestinal Diseases
Digestive System Diseases
 Intestinal Diseases
Actinomycetales Infections
Gram-Positive Bacterial Infections
Bacterial Infections
Bacterial Infections and Mycoses
Infections
Mycobacterium Infections, Nontuberculous