Pan African Clinical Trials Registry

South African Medical Research Council, South African Cochrane Centre
PO Box 19070, Tygerberg, 7505, South Africa
Telephone: +27 21 938 0506 / +27 21 938 0834 Fax: +27 21 938 0836
Email: pactradmin@mrc.ac.za Website: pactr.samrc.ac.za
Trial no.: PACTR202306534727467 Date of Approval: 14/06/2023
Trial Status: Registered in accordance with WHO and ICMJE standards
TRIAL DESCRIPTION
Public title Phase 2 Monovalent Chimpanzee Adenoviral-Vectored Marburg Virus Vaccine in Healthy Adults
Official scientific title A Phase 2, Randomized, Double-blind, Placebo-Controlled Trial to Evaluate Safety, Tolerability, and Immune Responses of an Investigational Monovalent Chimpanzee Adenoviral-Vectored Marburg Virus Vaccine in Healthy Adults
Brief summary describing the background and objectives of the trial Marburg virus (MARV) is a member of the Filoviridae family, which is known to induce viral hemorrhagic fever. MARV has been associated with 14 major outbreaks, most recently in Equatorial Guinea and Tanzania in 2023, and has a case fatality rate of over 80%. The World Health Organization has identified MARV as part of a priority list of pathogens for research and development. There are no approved vaccines or therapeutics to treat individuals infected with MARV. Building upon positive results of two phase I studies in the United States to evaluate the safety and immunogenicity of a single dose of the cAd3-Marburg vaccine, the vaccine is progressing into phase II trials. This is a multi-center, double-blinded, placebo-controlled, Phase II study to evaluate safety, tolerability, and immunogenicity of a single dose of cAd3-Marburg vaccine in healthy adults up to 70 years of age, in an Uganda and Kenya. The study will enroll 125 eligible participants randomized 4:1 to receive the cAd3-Marburg vaccine at 1.0 × 10^11 PU dose or placebo (0.9% NaCl solution) at Day 1, intramuscularly in deltoid muscle. Participants will be screened for eligibility up to 28 days before enrollment. Enrollment will be staggered, starting with healthy adults 18 to 50 years of age (inclusive). Upon enrollment of minimum 25 younger adult participants (sentinel), the safety data up to 7 days post vaccination of these 25 sentinel participants will be reviewed by the independent DSMB. Progression to enrollment of the older adults (>50 to 70 years of age) will be dependent on the unblinded review of the DSMB. Safety and immunogenicity will be assessed at Days 1, 8, 15, 29, 85, 169, and will conclude at the end of study visit on Day 366. The primary objective is to evaluate the safety and tolerability of the cAd3-Marburg vaccine. The secondary objectives are to evaluate antibody responses (IgG) to cAd3-Marburg vaccine at Day 29 post-vaccination and across additional timepoints post-vaccination.
Type of trial RCT
Acronym (If the trial has an acronym then please provide) Sabin 002
Disease(s) or condition(s) being studied Infections and Infestations
Sub-Disease(s) or condition(s) being studied Marburg Virus Disease
Purpose of the trial Prevention: Vaccines
Anticipated trial start date 26/09/2023
Actual trial start date 04/10/2023
Anticipated date of last follow up 05/12/2024
Actual Last follow-up date
Anticipated target sample size (number of participants) 125
Actual target sample size (number of participants)
Recruitment status Active, not recruiting
Publication URL
Secondary Ids Issuing authority/Trial register
STUDY DESIGN
Intervention assignment Allocation to intervention If randomised, describe how the allocation sequence was generated Describe how the allocation sequence/code was concealed from the person allocating the participants to the intervention arms Masking If masking / blinding was used
Parallel: different groups receive different interventions at same time during study Randomised Stratified allocation where factors such as age, gender, center, or previous treatment are used in the stratification Allocation was determined by the holder of the sequence who is situated off site Masking/blinding used Care giver/Provider,Outcome Assessors,Participants
INTERVENTIONS
Intervention type Intervention name Dose Duration Intervention description Group size Nature of control
Experimental Group cAd3 Marburg vaccine Single dose of cAd3-Marburg vaccine (1x10^11 PU) administered intramuscularly (IM) with needle and syringe in a volume of 0.56 mL at Day 1. Following a single dose of cAd3-Marburg vaccine (1x10^11 PU) at Day 1 participants will followed through the end of study visit at Day 366. The recombinant chimpanzee adenovirus Type 3-vectored Marburg vaccine, (cAd3-Marburg) is composed of a cAd3 vector that expresses Marburg wild type glycoprotein (WT GP) from the Angola strain. 100
Control Group Placebo Single dose of placebo (0.9% NaCl solution for injection) administered intramuscularly (IM) with needle and syringe in a volume of 0.56 mL at Day 1. Following a single dose of placebo at Day 1 participants will followed through the end of study visit at Day 366. 0.9% NaCl solution for injection. 25 Placebo
ELIGIBILITY CRITERIA
List inclusion criteria List exclusion criteria Age Category Minimum age Maximum age Gender
1. Able and willing to complete and provide written informed consent prior to any study procedure; completing an AoU prior to enrollment by answering 9 out of 10 questions correctly at least once in 3 attempts, and including optional consent for retention of blood samples for potential future testing and assay development. 2. Able to read and write the language used in diary card. 3. Male or non-pregnant female 18 to 70 years of age (inclusive) at time of informed consent. 4. Is capable of understanding and agrees to comply with planned study procedures and to be available for all clinic follow-up for all planned study visits. 5. Able to provide proof of identity to the satisfaction of the study clinician completing the enrollment process. 6. Has a means to be contacted and to contact the investigator during the study. 7. Agree not to receive any vaccine within 28 days from study vaccination (prior and after), with the exception of an emergency use authorization or authorized non-adenoviral vectored COVID-19 vaccine, which may be given within 14 days of study vaccination. 8. Agree not to donate bone marrow, blood, or blood products until 3 months after the study vaccination. 9. In good general health without clinically significant medical conditions, based on medical history, physical examination, vital signs, and clinical laboratory results as deemed acceptable by the principal investigator. 10. Clinical laboratory results within 28 days prior to vaccination within the site's laboratory reference ranges (or deemed not clinically significant by the principal investigator). 11. Has a BMI >17 and ≤37 at screening. Female & Male participant specific criteria detailed in protocol excluding pregnancy and child birth through defined study periods. 1. Pregnant or lactating female or plans to become pregnant or breastfeed starting from study vaccination through to study end. 2. Has any medical disease or condition that, in the opinion of the investigator, precludes study participation. This includes any acute, subacute, intermittent, or chronic medical disease or condition that listed in the study protocol. 3. Serology screen positive for infectious diseases (hepatitis B, hepatitis C, HIV 1 and 2, syphilis). 4. Known prior exposure to MARV or prior diagnosis of MVD. 5. Current diagnosis of COVID-19 by RT-PCR or antigenic testing or current signs and symptoms of COVID-19. Participants may be enrolled 14 days post resolution of all signs and symptoms of COVID-19 or of testing positive for COVID-19 in asymptomatic participants. 6. History of or active status of any of the following clinically significant conditions (full list provided in study protocol). 7. Has a clinically significant acute illness (this does not include minor illnesses) or temperature ≥38.0°Celsius (≥100.4° Fahrenheit) within 24 hours of the planned dose of study vaccine, re-evaluation of eligibility may be performed at resolution of all signs and symptoms, and randomization at a later date is permitted at the discretion of the investigator and after consultation with the sponsor (as appropriate). 8. Receipt of any of the specific substances list in the protocol. 9. Use of immunomodulators or systemic glucocorticoids in daily doses of glucocorticoid equivalence >20 mg of prednisolone in the last 90 days, and for periods exceeding 10 days. NSAIDS are permitted. 10. Receipt of blood products within 3 months prior to enrollment. 11. Current anti-tuberculosis prophylaxis or therapy. 12. Abnormality or permanent body art (such as tattoo) in deltoid region that would interfere with ability to observe or assess injection site reactions. Adult: 19 Year-44 Year,Aged: 65+ Year(s),Middle Aged: 45 Year(s)-64 Year(s) 18 Year(s) 70 Year(s) Both
ETHICS APPROVAL
Has the study received appropriate ethics committee approval Date the study will be submitted for approval Date of approval Name of the ethics committee
Yes 12/05/2023 Research and Ethics Committee Makere University School of Public Health
Ethics Committee Address
Street address City Postal code Country
P.O. Box 7072 Kampala - Uganda
Has the study received appropriate ethics committee approval Date the study will be submitted for approval Date of approval Name of the ethics committee
Yes 19/07/2023 Kenya Medical Research Institute KEMRI Scientific and Ethics Review Unit SERU
Ethics Committee Address
Street address City Postal code Country
P.O. BOX 54840-00200 Nairobi - Kenya
OUTCOMES
Type of outcome Outcome Timepoint(s) at which outcome measured
Primary Outcome To evaluate the safety and tolerability of cAd3-Marburg vaccine. Day 1-366
Secondary Outcome To evaluate the antibody response (IgG) to cAd3-Marburg vaccine at Day 29 post-vaccination Day 1-29
RECRUITMENT CENTRES
Name of recruitment centre Street address City Postal code Country
Makerere University Walter Reed Project Plot 42 Nakasero Road Kampala 16524 Uganda
KEMRI CRDR Siaya Site KEMRI Siaya Clinical Research Annex, Siaya County Referral Hospital Grounds Siaya 40600-144 Kenya
FUNDING SOURCES
Name of source Street address City Postal code Country
Biomedical Advanced Research and Development Authority 200 Independence Ave., S.W. Washington 20201 United States of America
SPONSORS
Sponsor level Name Street address City Postal code Country Nature of sponsor
Primary Sponsor Sabin Vaccine Insitute 2175 K Street, N.W. Suite 400 Washington 20037 United States of America Non-Profit
COLLABORATORS
Name Street address City Postal code Country
CONTACT PEOPLE
Role Name Email Phone Street address
Principal Investigator Betty Mwesigwa bmwesigwa@muwrp.org +2560312330400 Plot 42 Nakasero Road
City Postal code Country Position/Affiliation
Kampala - Uganda Deputy Executive Director Makerere University Walter Reed Project
Role Name Email Phone Street address
Scientific Enquiries Antonio Gonzalez Lopez Antonio.GonzalezLopez@Sabin.org +12402744546 2175 K Street NW, Suite 400
City Postal code Country Position/Affiliation
Washington 20037 United States of America Vice President Clinical Development Research and Development
Role Name Email Phone Street address
Public Enquiries Rajee Suri Rajee.Suri@Sabin.org +12028425025 2175 K Street, NW, Suite 400
City Postal code Country Position/Affiliation
Washington 20037 United States of America Vice President Communications
Role Name Email Phone Street address
Principal Investigator Videlis Nduba vnduba@gmail.com +25420202724264 P.O Box 254
City Postal code Country Position/Affiliation
Nairobi 00200 Kenya Deputy Director Centre for Respiratory Diseases Research Kenya Medical Research Institute
REPORTING
Share IPD Description Additional Document Types Sharing Time Frame Key Access Criteria
Yes Individual participant data collected during the trial will be available after deidentification, to qualified researchers submitting an approved research proposal and will provide access to study protocol, statistical analysis plan and clinical study report. Upon article publication, data requests can be submitted up to 24 months to achieve the aims of the proposal. Proposals should be directed to cad3safety@sabin.org (link to data will be provided). Clinical Study Report,Statistical Analysis Plan,Study Protocol Data requests can be submitted starting once the article is published and the data will be made accessible for up to 9 months. Extensions will be considered on a case-by-case basis. Researchers
URL Results Available Results Summary Result Posting Date First Journal Publication Date
No
Result Upload 1: Result Upload 2: Result Upload 3: Result Upload 4: Result Upload 5:
Result URL Hyperlinks Link To Protocol
Result URL Hyperlinks
Changes to trial information