NCT05940194

Brief Summary

This prospective, single-center, randomized, placebo-controlled (phase 1) and active-controlled (phase 2), observer-blind Phase 1/2 study includes two separate parts. After completing the phase 1 interim analysis, 2 doses (3mcg and 6mcg) were selected for phase 2. In Part 2 of this combined Phase 1/2 study, 374 adults aged 18-75 years will be randomized (1:1:1) to AZD1222, or COVIVAC 3 µg being evaluated in Phase 1 or the intermediate dose of COVIVAC 6 µg being selected after consideration of phase 1 results.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
374

participants targeted

Target at P75+ for phase_2 covid19

Timeline
Completed

Started Aug 2021

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

August 11, 2021

Completed
2 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 18, 2021

Completed
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

March 11, 2022

Completed
1.3 years until next milestone

First Submitted

Initial submission to the registry

July 8, 2023

Completed
3 days until next milestone

First Posted

Study publicly available on registry

July 11, 2023

Completed
1.5 years until next milestone

Results Posted

Study results publicly available

January 15, 2025

Completed
Last Updated

January 15, 2025

Status Verified

June 1, 2024

Enrollment Period

2 months

First QC Date

July 8, 2023

Results QC Date

July 16, 2023

Last Update Submit

November 27, 2024

Conditions

Outcome Measures

Primary Outcomes (7)

  • Percentage of Participants With Local and Systemic Solicited AEs by Severity During the First 7 Days After Each Vaccination.

    * Local solicited AEs: Pain or tenderness, Swelling or induration, Erythema * Systemic solicited AEs: Fever (defined as oral temperature ≥ 38°C), Headache, Fatigue or malaise, Myalgia, Arthralgia, Nausea or vomiting * Severity grading: Mild = Causes no or minimal interference with normal daily activities; intervention not indicated; Moderate =Interferes with but does not prevent normal daily activities; intervention indicated; Severe = Prevents normal daily activities; intervention or hospitalization indicated.

    7 days after each vaccination

  • Percentage of Participants With Unsolicited AEs by Severity and Relatedness During the First 28 Days After Each Vaccination

    * An unsolicited adverse event is any AE reported spontaneously by the subject, observed by the study staff during study visits or those identified during review of medical records or source documents. Solicited AEs with an onset after the seven-day solicitation period will be considered unsolicited AEs * Severity grading: Mild = Causes no or minimal interference with normal daily activities; intervention not indicated; Moderate =Interferes with but does not prevent normal daily activities; intervention indicated; Severe = Prevents normal daily activities; intervention or hospitalization indicated.

    28 days after each vaccination

  • Percentage of Participants With SAEs Severity and Relatedness Throughout the Entire Study Period

    A SAE is a specific AE that: * Results in death. * Is life-threatening.\* * Requires inpatient hospitalization or prolongation of an existing hospitalization.\*\* * Results in a persistent or significant disability or incapacity.\*\*\* * Results in a congenital anomaly or birth defect.

    From the first vaccination until Day 197

  • Percentage of Participants With AE of Special Interest by Severity and Relatedness Throughout the Entire Study Period

    AEs of Special interest which are AEs relevant to COVID-19 and potential immune-mediated medical conditions (PIMMC) occurred throughout the entire study period

    From first vaccination to Day 197

  • NT50 GMT at 14 Days and 6 Months After Second Vaccination

    NT50 GMT against SARS-CoV-2 pseudovirus in subjects who are anti-S IgG seronegative at baseline

    14 days and 6 months after second vaccination

  • GMFR in NT50 at 14 Days and 6 Months After Second Vaccination

    GMFR in NT50 against SARS-CoV-2 pseudovirus measured at 14 days and 6 months after second vaccination to the baseline

    14 days and 6 months after second vaccination

  • Percentage of Subjects With Seroresponse in NT50 at 14 Days and 6 Months After Second Vaccination

    Seroresponses against SARS-CoV-2 pseudovirus as defined by a ≥ 4-fold increase from baseline

    14 days and 6 months after second vaccination

Secondary Outcomes (3)

  • IgG GMC at 14 Days and 6 Months After Second Vaccination

    14 days and 6 months after the second vaccination

  • GMFR in Anti-S IgG GMC at 14 Days and 6 Months After Second Vaccination

    14 days and 6 months after the second vaccination

  • Percentage of Subjects With Seroresponses in Anti-S IgG Concentration at 14 Days and 6 Months After Second Vaccination

    14 days and 6 months after the second vaccination

Other Outcomes (2)

  • IFN-gamma

    14 days and 6 months after the second vaccination

  • IL5

    14 days and 6 months after second vaccination

Study Arms (3)

COVIVAC 3 mcg

EXPERIMENTAL

3 mcg IVAC COVIVAC vaccine for intramuscular injection administered as two doses (0.5mL each) 28 days apart.

Biological: COVIVAC vaccine

COVIVAC 6 mcg

EXPERIMENTAL

6 mcg IVAC COVIVAC vaccine for intramuscular injection administered as two doses (0.5mL each) 28 days apart.

Biological: COVIVAC vaccine

AZD1222

ACTIVE COMPARATOR

AZD1222 (AstraZeneca) vaccine for intramuscular injection administered as two doses (0.5mL each) 28 days apart.

Biological: COVIVAC vaccine

Interventions

COVIVAC vaccineBIOLOGICAL

For prevention Covid-19

AZD1222COVIVAC 3 mcgCOVIVAC 6 mcg

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Adult ≥ 18 years old inclusive at the time of randomization.
  • Having no clinically significant acute medical condition, and no chronic medical condition that has not been controlled within 90 days of randomization, as determined by medical history, physical examination, screening laboratory test results, and clinical assessment of the investigator.
  • Has provided written informed consent prior to performance of any study-specific procedure.
  • Has a body mass index (BMI) of 17 to 40 kg/m2, inclusive, at screening.
  • Resides in study site area and is able and willing to adhere to all protocol visits and procedures.
  • If a woman is of childbearing potential age, must not be breastfeeding or be pregnant (based on a negative urine pregnancy test at screening and during the 24 hours prior to receipt of the first dose of IP), must plan to avoid pregnancy for at least 28 days after the last dose of IP, and be willing to use an adequate method of contraception consistently and have a repeated pregnancy test prior to the second (last) dose of IP.

You may not qualify if:

  • Use of any investigational medicinal product within 90 days prior to randomization or planned use of such a product during the period of study participation.
  • History of administration of any non-study vaccine within 28 days prior to administration of study vaccine or planned vaccination within 3 months after enrolment.
  • Previous receipt of investigational vaccine for SARS or MERS, or any investigational or licensed vaccine that may have an impact on interpretation of the trial results
  • History of hypersensitivity reaction to any prior vaccination or known hypersensitivity to any component of the study vaccine
  • History of egg or chicken allergy
  • History of angioedema
  • History of anaphylaxis (≥ grade 2)
  • Acute illness (moderate or severe) and/or fever (body temperature measured orally ≥38°C)
  • Any abnormal vital sign deemed clinically relevant by the PI
  • A positive serologic test for hepatitis B (HBsAg) or hepatitis C (HCV Ab) (phase 1 only)
  • History of confirmed HIV
  • History of laboratory-confirmed COVID-19
  • History of malignancy, excluding non-melanoma skin and cervical carcinoma in situ
  • Any confirmed or suspected immunosuppressive or immunodeficient state
  • Administration of immunoglobulin or any blood product within 90 days prior to first study injection or planned administration during the study period.
  • +5 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

District Health Center of Vu Thu District

Thái Bình, Thai Binh, 414900, Vietnam

Location

Related Publications (1)

  • Thiem VD, Anh DD, Ha VH, Van Thom N, Thang TC, Mateus J, Carreno JM, Raghunandan R, Huong NM, Mercer LD, Flores J, Escarrega EA, Raskin A, Thai DH, Van Be L, Sette A, Innis BL, Krammer F, Weiskopf D. Safety and immunogenicity of an inactivated recombinant Newcastle disease virus vaccine expressing SARS-CoV-2 spike: A randomised, comparator-controlled, phase 2 trial. Vaccine. 2025 Jan 12;44:126542. doi: 10.1016/j.vaccine.2024.126542. Epub 2024 Nov 29.

MeSH Terms

Conditions

COVID-19

Condition Hierarchy (Ancestors)

Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract Diseases

Results Point of Contact

Title
Dr. Thang Tran Cong, Medical office
Organization
PATH

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 8, 2023

First Posted

July 11, 2023

Study Start

August 11, 2021

Primary Completion

October 18, 2021

Study Completion

March 11, 2022

Last Updated

January 15, 2025

Results First Posted

January 15, 2025

Record last verified: 2024-06

Locations