A Clinical Trial to Assess the Safety and Immunogenicity of New Malaria Vaccine Candidates ChAd63 Pfs25-IMX313 and MVA Pfs25-IMX313
A Phase Ia Clinical Trial to Assess the Safety, Immunogenicity and Ex-vivo Efficacy of New Plasmodium Falciparum Malaria Vaccine Candidates ChAd63 Pfs-IMX313 Alone and With MVA Pfs25-IMX313
This is a clinical trial in which healthy volunteers will be administered one or two experimental malaria vaccines. ChAd Pfs-IMX313 will either be administered alone or with MVA Pfs25-IMX313 in a prime-boost regime.
All vaccines will be administered intramuscularly.
Group 1 will receive one dose of ChAd63 Pfs25-IMX313 at 5x10^9 vp.
Group 2A will receive one dose of ChAd63 Pfs-IMX313 at 5x10^10 vp.
Group 2B will receive one dose of ChAd63 Pfs-IMX313 at 5x10^10 vp and one dose of MVA Pfs25-IMX313 at 1x10^8 pfu eight weeks later.
Group 2C will receive one dose of ChAd63 Pfs25-IMX313 at 5x10^10 vp and one dose of MVA Pfs25-IMX313 at 2x10^8 pfu eight weeks later.
The study will assess the safety of the vaccinations, and the immune responses to the vaccination. Immune responses are measured by tests on blood samples.
Healthy volunteers will be recruited in Oxford and Southampton, England.
Studie Overzicht
Toestand
Toestand
Conditie
Conditie
Interventie / Behandeling
Interventie / Behandeling
Studietype
Studietype
Inschrijving (Werkelijk)
Inschrijving
Fase
Fase
- Fase 1
Contacten en locaties
Studie Locaties
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Oxford, Verenigd Koninkrijk, OX3 7LE
- CCVTM, University of Oxford, Churchill Hospital
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Southampton, Verenigd Koninkrijk, SO16 6YD
- NIHR Wellcome Trust Clinical Research Facility
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Deelname Criteria
Geschiktheidscriteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
The volunteer must satisfy all the following criteria to be eligible for the study:
- Healthy adults aged 18 to 50 years
- Able and willing (in the Investigator's opinion) to comply with all study requirements
- Willing to allow the investigators to discuss the volunteer's medical history with their General Practitioner
- 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
- Agreement to refrain from blood donation during the course of the study
- Provide written informed consent
Exclusion Criteria:
The volunteer may not enter the study if any of the following apply:
- 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 malaria vaccine or any other investigational vaccine likely to impact on interpretation of the trial data.
- Administration of immunoglobulins and/or any blood products within the three months preceding the planned administration of the vaccine candidate
- 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, e.g. egg products.
- Any history of anaphylaxis in relation 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 likely to affect participation in the study
- Any other serious chronic illness requiring hospital specialist supervision
- 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
- Seropositive for hepatitis B surface antigen (HBsAg)
- Seropositive for hepatitis C virus (antibodies to HCV)
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Preventie
- Toewijzing: Niet-gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Geen (open label)
Aantal wapens
Wapens en interventies
Deelnemersgroep / ArmDeelnemersgroep / Arm |
Interventie / BehandelingInterventie / Behandeling |
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Actieve vergelijker: Group 1
ChAd63 Pfs25-IMX313 (5x10^9 vp)
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Actieve vergelijker: Group 2A
ChAd63 Pfs25-IMX313 (5x10^10 vp)
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Actieve vergelijker: Group 2B
ChAd63 Pfs25-IMX313 (5x10^10) and MVA Pfs25-IMX313 (1x10^8 pfu) 8 weeks later
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Actieve vergelijker: Group 2C
ChAd63 Pfs25-IMX313 (5x10^10) and MVA Pfs25-IMX313 (2x10^8 pfu) 8 weeks later
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Wat meet het onderzoek?
Primaire uitkomstmaten
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Number of Adverse Events
Tijdsspanne: 8 months
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The specific endpoints for safety and reactogenicity will be actively and passively collected data on adverse events.
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8 months
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Secundaire uitkomstmaten
Secundaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
|---|---|
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Immunogenicity of ChAd63 Pfs25-IMX313 when administered to healthy volunteers alone, and with MVA Pfs25-IMX313 in a prime-boost regime.
Tijdsspanne: 8 months
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8 months
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Ex-vivo efficacy of ChAd63 Pfs25-IMX313 when administered to healthy volunteers alone, and with MVA Pfs25-IMX313 in a prime-boost regime. The functional activity of the vaccine induced antibodies will be tested using membrane-feeding assays.
Tijdsspanne: 8 months
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8 months
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Medewerkers en onderzoekers
Sponsor
Sponsor
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Studie start
Primaire voltooiing (Werkelijk)
Primaire voltooiing
Studie voltooiing (Werkelijk)
Studie voltooiing
Studieregistratiedata
Eerst ingediend
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Eerst geplaatst
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update geplaatst
Laatste update ingediend die voldeed aan QC-criteria
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
Andere studie-ID-nummers
- VAC062
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