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COVID-19Phase 1/2VAX-002-01NCT06436911

To Evaluate Safety and Immunogenicity of a Prophylactic Plasmid DNA

A Phase 1/2 study testing COVIGENIX VAX- 002 in people with COVID-19, run by Entos Pharmaceuticals Inc. at 6 sites in Canada.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Currently, several vaccines are available to combat the COVID-19 pandemic. The persistence of SARS-CoV-2 globally requires the development of additional vaccines to aid in preventing further SARS-CoV-2 infections. Covigenix VAX-002 is a vaccine based off its predecessors VAX-001 and VAX-001-1b. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
COVID-19
What is being tested?
COVIGENIX VAX- 002
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
46 participants
Where
6 sitesCanada
Study dates
22 Jul 2024to 3 Oct 2025
Phase
Phase 1/2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 1. Generally healthy adults aged 18 years or older at the time of enrollment and with a body mass index (BMI) of ≤30 kg/m2
  • Completion of a prior COVID-19 primary vaccination course or booster (any commercially available within the study country) at least 3 months prior to enrollment OR recent clinically documented SARS-CoV-2 infection (by polymerase chain reaction [PCR] or antibody test) in the past three months but not within one month from enrollment.
  • Willing to refrain from receiving an authorized COVID-19 booster dose until at least 90 days post IP administration.
  • Female participants of child-bearing potential must have practiced adequate contraception for 30 days before IP injection, have a negative pregnancy test on the day of IP injection, and agree to continue adequate contraception until 180 days after IP injection. (Please refer to Section 10.44 for the definition of childbearing potential and adequate contraception).
  • Male participants must agree to continue adequate contraception until 180 days after IP injection.
  • Able to consent to participate in the study and signed an Informed Consent Form (ICF).
  • Able and willing to complete all the scheduled study procedures during the whole study period (approximately 6.5 months).
  • Generally, in good health, as determined by a review of medical history and a physical examination within 14 days prior to IP injection.

Who cannot join

  • 1. History of anaphylaxis to key ingredients within the vaccine. 2. History of seizure disorder, encephalopathy, or psychosis. 3. Female participant is pregnant (positive urine pregnancy test), lactating, or plans to become pregnant during the 180 days of enrollment. 4. Positive test result for human immunodeficiency virus (HIV) or hepatitis B and C at Screening (test to be performed at the discretion of the investigator based on medical history or physical examination). 5. Positive result of lateral flow test for SARS-COV-2 on Day 0. 6. Laboratory (hematological and biochemistry) examination that is out of normal range or greater than a Grade 2 abnormality. Grade 1 abnormalities will not be exclusionary if considered not clinically significant by the investigator. Laboratory tests include: complete blood count (CBC), prothrombin time (PT), partial thromboplastin time (PTT), alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), total bilirubin (T Bil), creatinine (CR), lipase, and blood glucose at screening. 7. Transient mild laboratory abnormalities may be rescreened once, and the participant will be excluded if the laboratory repeat test is abnormal as per local laboratory normal values and the investigator's assessment. 8. Presents with any acute febrile disease (oral temperature ≥37.5°C [99.5oF]) or active infectious disease within 48 hours prior to IP injection. 9. Unstable concomitant underlying conditions. Note: Stable condition defined as: the participant is appropriately managed on consistent disease management; for example, participants with well-controlled hypertension, adult-onset diabetes, benign prostate hypertrophy, or hypothyroid disease will be eligible for enrollment. The treatment regimen should be stable for at least 3 months prior to entering the study. Once IP treatment has started, the patient must be willing to maintain all aspects of the treatment regimen and forgo any elective changes in medication or management. Emergency changes in medication or management would be captured as an AE. 10. History of Guillain-Barre Syndrome or degenerative neurological disorders; a history of autoimmune, inflammatory disease or potential immune-mediated diseases (pIMD), or any condition that may put the participant at increased risk of safety events. 11. History of serious cardiovascular diseases, such as arrhythmia, conduction block, history of myocardial infarction, and severe hypertension not controlled with medication. 12. History of immunodeficiency, asplenia, or functional asplenia. 13. History of platelet disorder or other bleeding disorder that may cause contraindication for IM injection. 14. Heavy smoker (>10 cigarettes per day), vaper (>1 mL of e-liquid per day), or cannabis user ([near] daily use). Smokers have to agree to use the same cigarette brand throughout the study.
  • 15. History or diagnosis of coagulopathies. 16. Prior receipt of immunosuppressive medication, cytotoxic therapy, or systemic corticosteroids within 6 months before Day 0. 17. Recent receipt of blood products within 4 months before Day 0. 18. Administration of other investigational drugs within 3 months before Day 0 or planned use during the study period. 19. Currently has or a history of any condition that, in the opinion of the investigator, may interfere with the participant's compliance, evaluation of study objectives, or informed consent process (i.e., medical, psychological, social, or other conditions).

Trial locations and contacts

6 sites in 1 country.

6 sites in 1 country

Canada6 sites

  • Centricity Research

    Burlington, Ontario, L7M4Y1

  • University of Alberta

    Edmonton, Alberta

  • Diex Recherche Quebec

    Québec, Quebec, G1V4T3

  • Diex Recherche

    Sherbrooke, Quebec, J1L0H8

  • Centricity Research

    Toronto, Ontario, M4G3E8

  • Centricity Research

    Toronto, Ontario, M9W4L6

Other trials in Canada

About this study

Official title: Phase 1/2 Study to Evaluate Safety and Immunogenicity of a Prophylactic Plasmid DNA Booster Vaccine Against SARS-CoV-2 [Covigenix VAX-002] in Generally Healthy Adults 18 Years and Older

Currently, several vaccines are available to combat the COVID-19 pandemic. The persistence of SARS-CoV-2 globally requires the development of additional vaccines to aid in preventing further SARS-CoV-2 infections. Covigenix VAX-002 is a vaccine based off its predecessors VAX-001 and VAX-001-1b. All three are plasmid DNA vaccines that express key antigenic determinants from SARS-CoV-2 and use the Entos Pharmaceuticals' Fusogenix proteo-lipid vehicle (PLV) platform. Currently, the safety and tolerability of VAX-001 and VAX-001-1b for primary vaccination following 1 or 2 doses are being investigated in a Phase 1/2 study (ENTVAX01-101). In Phase 1, VAX-001 was administered to healthy adults on Day 0 and Day 14, as either 2 low doses (100 μg/dose) or 2 high doses (250 μg/dose). Overall, data suggest that VAX-001 is safe at both the low and high dose levels. The Phase 2 part evaluates VAX-001-1b in adults at a 100 μg dose level on a 1-dose and a 2-dose schedule (Days 0 and 28). An interim analysis conducted on data from 18 participants in the sentinel group who had received their first dose of 100 μg showed that VAX-001-1b was overall safe with minor adverse events (AEs) registered. No serious adverse events (SAEs) were reported. After a review of the data, the Data Safety Monitoring Committee (DSMC) provided their recommendations for the participants in the 100 μg dose sentinel group to receive a second dose.

The present study investigates the safety and immunogenicity of VAX-002 when given as a booster dose to generally healthy adults aged 18 years or older who have received a primary vaccination course or a booster dose of an authorized COVID-19 vaccine at least 3 months prior to Day 0.

Read more

VAX-002 was specifically designed to address the new circulating omicron variants of SARS-CoV-2.

The study consists of 2 parts: a dose-finding/safety evaluation part (Phase 1) to determine the dose of VAX-002 for booster vaccination (100 μg or 250 μg) followed by an adaptive Phase

Read the detailed description

Phase 1 is the randomized, observer-blinded, multi-center, dose-finding part of the study, followed by an adaptive Phase 2 in which the optimal dose, determined from Phase 1, will be evaluated for safety and efficacy. In Phase 1 up to 50 participants are planned to be randomized 1:1 into one of two groups: either 100 μg intramuscular (IM) injection or 250 μg IM injection. Participants are to receive a single 0.5 mL IM injection of VAX-002 100 μg or 250 μg on Day 0. Follow-up visits will occur on Days 7, 14, 17 (phone call visit), 21, 28, 42, and 180. An interim analysis is planned once all participants in Phase 1 have completed their Day 28 visit to evaluate dose-response and safety to support optimal dose selection for Phase 2.

In Phase 2 approximately 250 participants will be enrolled and will receive a single 0.5 mL IM

injection of the optimal VAX-002 dose (determined in the Phase 1 interim analysis) on Day 0. Follow- up visits will occur on Days 7, 14, 17 (phone call visit), 21, 28, 42, and 180.

Conditions
COVID-19
Being tested
COVIGENIX VAX- 002
Medical subject headings
COVID-19

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • COVIGENIX VAX- 002Drug

    ENTVAX-001-01

Study groups in NCT06436911
Study groupRoleWhat they receive
Phase 1ExperimentalIn Phase 1 up to 50 participants are planned to be randomized 1:1 into one of two groups: either 100 μg intramuscular (IM) injection or 250 μg IM injection. Participants are to receive a single 0.5 mL IM injection of VAX-002 100 μg or 250 μg on Day 0. Follow-up visits will occur on Days 7, 14, 17 (phone call visit), 21, 28, 42, and 180. An interim analysis is planned once all participants in Phase 1 have completed their
Receives: Drug: COVIGENIX VAX- 002
Phase 2ExperimentalIn Phase 2 approximately 250 participants will be enrolled and will receive a single 0.5 mL IM injection of the optimal VAX-002 dose (determined in the Phase 1 interim analysis) on Day 0. Follow- up visits will occur on Days 7, 14, 17 (phone call visit), 21, 28, 42, and 180.
Receives: Drug: COVIGENIX VAX- 002

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Primary Outcome

    To evaluate the safety of VAX-002; Frequency and grade of each solicited local (injection site) and systemic reactogenicity AE from Day 0 through Day 28 Phase 2: Frequency and grade of each solicited local (injection site) and systemic reactogenicity AE at Day 0 through Day 28 Phase 1 only: Frequency and grade of unsolicited AEs, SAEs, and medically- attended AEs (MAAEs) from administration of investigational product (IP) through Day 28 Phase 2: Frequency and grade of unsolicited AEs, SAEs, and MAAEs from IP administration through Day 28 Phase 1/2: Frequency, type, and grade of SAEs related to IP administration, MAAEs related to IP administration, adverse events of special interest (AESI), or COVID-19 illness from IP administration through end-of-study (EOS)

    Measured: 13 months

Secondary outcomes (1)

  1. Secondary Outcome

    To assess SARS-CoV-2 neutralizing antibody response:

    Phase 1 only : Antibody responses at specified timepoints from baseline (Day 0) through Day 28 - Geometric mean neutralizing antibody titers, as measured by SARS-CoV-2 neutralization assay

    Phase 1/2: Antibody responses at specified timepoints from baseline (Day 0) through EOS

    • Geometric mean neutralizing antibody titers, as measured by SARSCoV2 neutralization assay

    Phase 1 only: Seroconversion rate (% of participants who seroconvert), defined as a 4-fold or greater increase in neutralizing antibody titers, as measured by SARSCoV-2 neutralization assay from baseline (Day 0) through Day 28 Phase 1/2: Seroconversion rate (% of participants who seroconvert), defined as a 4-fold or greater increase in neutralizing antibody titers, as measured by SARS-CoV-2 neutralization assay at specified timepoints from baseline (Day 0) through EOS

    Measured: 13 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted31 May 2024
  2. Study start22 Jul 2024
  3. Primary completion3 Oct 2025
  4. Study completion3 Oct 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Model description
In Phase 1 up to 50 participants are planned to be randomized 1:1 into one of two groups: either 100 μg intramuscular (IM) injection or 250 μg IM injection. Participants are to receive a single 0.5 mL IM injection of VAX-002 100 μg or 250 μg on Day 0. Follow-up visits will occur on Days 7, 14, 17 (phone call visit), 21, 28, 42, and 180. An interim analysis is planned once all participants in Phase 1 have completed their Day 28 visit to evaluate dose-response and safety to support optimal dose selection for Phase 2. In Phase 2 approximately 250 participants will be enrolled and will receive a single 0.5 mL IM injection of the optimal VAX-002 dose (determined in the Phase 1 interim analysis) on Day 0. Follow- up visits will occur on Days 7, 14, 17 (phone call visit), 21, 28, 42, and 180.
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
46 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06436911
Sponsor's protocol ID
ENTVAX-002-01
Acronym
VAX-002-01
Status last verified
Dec 2025
First submitted
15 May 2024
Last updated
16 Dec 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing COVIGENIX VAX- 002 in people with COVID-19, run by Entos Pharmaceuticals Inc. at 6 sites in Canada.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 16 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 6 sites in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Primary Outcome (time frame: 13 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06436911.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Dec 2025.

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