Adenovirus Type 35 Based Circumsporozoite Malaria Vaccine in Burkina Faso
A Phase I Randomized, Controlled, Double-Blinded, Dosage-Escalation Trial to Evaluate the Immunogenicity, Safety, and Reactogenicity of an Adenovirus Type 35 Based Circumsporozoite Malaria Vaccine in Burkinabè, Semi-Immune, Healthy Adults 18 to 45 Years of Age
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Detailed Description
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Phase 1
Contacts and Locations
Study Locations
-
-
-
West Africa, Burkina Faso
- Centre National de Recherche et de Formation sur le Paludisme - Research and Training
-
-
Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Provision of informed consent before any protocol procedures are performed.
- Males and non-pregnant, non-lactating females between the ages of 18 and 45 years, inclusive.
- Females and males must agree to practice adequate contraception until at least 28 days following their last immunization dose (including abstinence; hormonal contraception; condoms with spermicidal agents; post-menopausal; or surgical sterilization/vasectomy).
- Participants must agree to avoid high risk sexual behavior for exposure to human immunodeficiency virus (HIV).
- In good health as determined by screening medical history, physical examination (PE), and laboratory assessments.
- Willingness to comply with protocol requirements.
- Willingness to be contacted for one year for assessment of serious adverse events.
- Must be a permanent resident of the Saponé health district (villages around Balonghin) in Burkina Faso.
Exclusion Criteria:
- Current or recent (within the last four weeks) treatment with parenteral, inhaled, or oral corticosteroids (intranasal steroids are acceptable), or other immunosuppressive agents, or chemotherapy.
- History of splenectomy.
- Abnormal screening laboratory values. Any abnormal screening value for any screening test will exclude the subject from the study. Abnormal screening labs will not be repeated with the exception of high glucose levels will be repeated at a fasting state.
- History of intravenous (IV) drug abuse.
- History of, or current medical, occupational, social or family problems as a result of alcohol or illicit drug use.
- History of moderate to severe mental illness, as defined by symptoms interfering with social or occupational function or suicidal thoughts/attempts.
- History of receiving blood or blood products (such as blood transfusion, platelet transfusion, immunoglobulins, hyperimmune serum) in the previous 6 months.
- Vaccination with a live vaccine within the past 30 days or with a nonreplicating, inactivated, or subunit vaccine within the last 14 days.
- Known hypersensitivity to components of the vaccine.
- History of acute or chronic medical conditions including, but not limited to, disorders of the liver, kidney, lung, heart, or nervous system, or other metabolic or autoimmune/inflammatory conditions.
- History of coagulation defect or bleeding from (bruising at) multiple sites that cannot be linked to trauma or surgery.
- History of anaphylaxis or severe hypersensitivity reaction.
- Severe asthma, as defined by an emergency room visit or hospitalization within the last 12 months.
- Pregnant or breastfeeding women.
- Acute illness, including temperature >37.8 degrees Celsius within one week prior to vaccination.
- Positive serology for human immunodeficiency virus (HIV), hepatitis C virus (HCV), or hepatitis B surface antigen (HBsAg).
- Concurrent participation in other investigational protocols or receipt of an investigational product within the previous 30 days or planned receipt of an investigational product within 28 days following the last immunization dose.
- Identification of any condition that, in the opinion of the investigator, would affect the ability of the subject to understand or comply with the study protocol or would jeopardize the safety or rights of a subject participating in the study.
- History of malignancy, including hematologic and skin cancers (except for a localized basal cell carcinoma), or known immunodeficiency syndrome.
- History of previous receipt of a malaria vaccine.
- Pre-medication with analgesic or antipyretic agents in the 6 hours prior to vaccination, or planned medication with analgesic or antipyretic in the 24 hours following vaccination. This criterion should not preclude subjects receiving such medication if the need arises.
- Receipt of a recombinant adenovirus vector vaccine in a prior study.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
Experimental: Group D: 10^11 vp/mL or placebo
10 subjects will receive 10^11 vp/mL Ad35.CS.01 and 2 subjects will receive placebo at 0, 1 and 3 months.
|
Ad35.CS.01 appears clear to slightly opalescent with no visible particles.
Each 0.75 mL dose of the assigned dosage will be administered via intramuscular injection into the deltoid muscle.
Dosages: 10^9 viral particles (vp)/mL, 10^10 vp/mL, 5 x 10^10 vp/mL, and 10^11 vp/mL.
Normal saline placebo control delivered via intramuscular injection into the deltoid muscle.
|
|
Experimental: Group A: 10^9 vp/mL or placebo
10 subjects will receive 10^9 viral particles (vp)/mL Ad35.CS.01 and 2 subjects will receive placebo at 0, 1 and 3 months.
|
Ad35.CS.01 appears clear to slightly opalescent with no visible particles.
Each 0.75 mL dose of the assigned dosage will be administered via intramuscular injection into the deltoid muscle.
Dosages: 10^9 viral particles (vp)/mL, 10^10 vp/mL, 5 x 10^10 vp/mL, and 10^11 vp/mL.
Normal saline placebo control delivered via intramuscular injection into the deltoid muscle.
|
|
Experimental: Group B: 10^10 vp/mL or placebo
10 subjects will receive 10^10 vp/mL Ad35.CS.01 and 2 subjects will receive placebo at 0, 1 and 3 months.
|
Ad35.CS.01 appears clear to slightly opalescent with no visible particles.
Each 0.75 mL dose of the assigned dosage will be administered via intramuscular injection into the deltoid muscle.
Dosages: 10^9 viral particles (vp)/mL, 10^10 vp/mL, 5 x 10^10 vp/mL, and 10^11 vp/mL.
Normal saline placebo control delivered via intramuscular injection into the deltoid muscle.
|
|
Experimental: Group C: 5 x 10^10 vp/mL or placebo
10 subjects will receive 5 x 10^10 vp/mL Ad35.CS.01 and 2 subjects will receive placebo at 0, 1 and 3 months.
|
Ad35.CS.01 appears clear to slightly opalescent with no visible particles.
Each 0.75 mL dose of the assigned dosage will be administered via intramuscular injection into the deltoid muscle.
Dosages: 10^9 viral particles (vp)/mL, 10^10 vp/mL, 5 x 10^10 vp/mL, and 10^11 vp/mL.
Normal saline placebo control delivered via intramuscular injection into the deltoid muscle.
|
What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
|
The number of subjects experiencing severe (Grade 3) solicited injection site reactions.
Time Frame: Within 14 days following vaccination.
|
Within 14 days following vaccination.
|
|
The number of subjects spontaneously reporting severe (Grade 3) adverse events considered associated with the vaccination.
Time Frame: At any point during the study period.
|
At any point during the study period.
|
|
The number of subjects experiencing severe (Grade 3) solicited systemic reactions
Time Frame: Within 14 days following vaccination.
|
Within 14 days following vaccination.
|
|
Serious adverse events considered associated with the vaccination reported.
Time Frame: At any point during the study period.
|
At any point during the study period.
|
Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
|
Neutralizing antibody titers against Adenovirus type 35 by Adenovirus Neutralization Assay.
Time Frame: At days 0, 28, 56, 84, 112 and 140.
|
At days 0, 28, 56, 84, 112 and 140.
|
|
Antibody titers against the malaria circumsporozoite antigen [Geometric Mean Titer and individual log enzyme-linked immunosorbent assay (ELISA) units].
Time Frame: At days 0, 28, 56, 84, 112 and 140.
|
At days 0, 28, 56, 84, 112 and 140.
|
Collaborators and Investigators
Sponsor
Sponsor
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Estimate)
First Posted
Study Record Updates
Last Update Posted (Estimate)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- 08-0037
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.