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Safety and Immunogenicity of COVID-19 Vaccine, AdCLD-CoV19-1

Primary Purpose

COVID-19, Vaccines

Status
Terminated
Phase
Phase 2
Locations
Korea, Republic of
Study Type
Interventional
Intervention
AdCLD-CoV19-1
Sponsored by
Cellid Co., Ltd.
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional prevention trial for COVID-19

Eligibility Criteria

19 Years - undefined (Adult, Older Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

  1. Healthy individual aged 19 years and above at consent.
  2. Individual willing to provide written informed consent to participate study voluntarily.
  3. Individuals who can be followed up during the study period and can comply with the study requirements.
  4. Individual who agrees not to donate blood during the study participation
  5. Females of childbearing potential with negative serum or urinary pregnancy test on the day of screening.
  6. Females of childbearing potential who are using an effective birth control method for at least 4 weeks before the screening and during the study participation.

Exclusion Criteria:

  1. Prior SARS-CoV-2 infection confirmed by a rapid antibody kit at screening.
  2. History of receiving any vaccine (licensed or investigational) for SARS-CoV-2.
  3. History of SARS-CoV-1 or MERS vaccination and treatment.
  4. Individual determined to be clinically significantly abnormal by the screening outcome based on medical history, physical examination, laboratory evaluations (positive serological tests for Hepatitis B surface antigen (HBsAg), Hepatitis C antibody, and Human Immunodeficiency Virus (HIV) antibody), electrocardiogram (ECG) and Chest X-ray, and the clinical judgment of the investigator.
  5. Individual who has received other vaccines from 4 weeks prior to the first dose of test vaccination or planned to receive any vaccine within 4 weeks of the last dose of the study vaccine.
  6. Febrile illness (tympanic temperature ≥ 38°C) or acute illness with any clinically significant, respiratory symptoms (e.g., sore throat, cough, sputum) within 3 days prior to the study vaccination.
  7. Known history or allergy to study vaccine components and/or excipients or other medications, or any other allergies deemed by the investigator to increase the risk of an adverse event if they were to participate in the trial (e.g., Guillain-Barre Syndrome).
  8. Individual with major congenital abnormalities, which in the opinion of investigator may affect the participant's participation in the study.
  9. Chronic use of systemic steroids (>10 mg/day prednisone equivalent for periods exceeding 14 days), cytotoxic or other immunosuppressive drugs within the past 6 weeks.
  10. Any abnormality or chronic disease which in the opinion of the investigator might be detrimental to the safety of the participant and interfere with the assessment of the study objectives.

    ① Respiratory diseases: Asthma, Chronic Obstructive Lung Disease (COPD), active or latent tuberculosis which require medication, etc.

    ② Serious cardiovascular diseases: Congestive heart failure, coronary artery disease, myocardial infarction, uncontrolled hypertension, myocarditis, pericarditis, etc.

    ③ Neurologic diseases: Epilepsy, seizure within 3 years, migraine, stroke, encephalopathy, Guillain-Barre Syndrome, encephalomyelitis, acute transverse myelitis, etc.

    ④ Malignant cancer diagnosed within the past 5 years (skin basal cell and squamous cell carcinoma are excluded).

    ⑤ Immune function disorders, including auto-immune diseases and immunodeficiency diseases (known HIV infection or other immune function disorders)

    ⑥ Other hepatobiliary, renal, endocrine, urinary tract, muscular skeletal diseases which the investigator considers clinically significant

  11. Individual with hereditary or idiopathic angioneurotic edema
  12. Individuals with behavioral or cognitive impairment or psychiatric disease or neural disorders that, in the opinion of the investigator, could interfere with the participant's ability to participate in the trial.
  13. Individual with splenectomy and transplantation (including solid organ and bone marrow).
  14. Individual with past history of thrombocytopenia and/or thrombosis, myocarditis or pericarditis or any other significant cardiac condition.
  15. Individual with a known bleeding diathesis, or any condition that may be associated with a prolonged bleeding time resulting in contraindication for IM injections/blood extractions (Those who receive low dose aspirin (less than 100mg/day) are not excluded).
  16. Receipt of immunoglobulin or blood-derived products in the past 12 weeks or plan to receive during the study period.
  17. Body mass index (BMI) ≥ 30 kg/m2.
  18. As per Investigator's medical judgement, an individual could be excluded from the study in spite of meeting all inclusion/exclusion criteria mentioned above.
  19. Any female participant who is lactating*, pregnant or planning for pregnancy** during the course of study period.
  20. Individual concomitantly enrolled or scheduled to be enrolled in another trial.
  21. Individual who is research staff involved with the clinical study or family/household members of research staff.

Sites / Locations

  • Korea University Ansan Hospital
  • Catholic University Seoul St.Mary's Hospital
  • Hallym University Kangnam Sacred Heart Hospital
  • Korea University Guro Hospital

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm Type

Experimental

Experimental

Placebo Comparator

Arm Label

2 doses of AdCLD-CoV19-1

1 dose of AdCLD-CoV19-1

Placebo

Arm Description

Group 1 will receive 2 doses of AdCLD-CoV19-1

Group 2 will receive 1 doses of AdCLD-CoV19-1 followed by 1 dose of placebo

Group 2 will receive 1 doses of placebo followed by 1 dose of AdCLD-CoV19-1 after an interim analysis

Outcomes

Primary Outcome Measures

Proportion of immediate adverse events (AE)
• Proportion of immediate AE within 30 minutes post each dose injection
Proportion of solicited local and systemic AE
• Proportion of solicited local and systemic AEs within 7 days post each dose injection. Local AEs at the site of injection: Pain, tenderness, erythema/redness, swelling, induration, pruritis. Systemic AEs: Fever, fatigue/general weakness, chill, headache, myalgia, arthralgia, diarrhea, nausea/vomiting, abdominal pain, mucocutaneous reaction/rash, urticaria, dizziness, cough, dyspnea.
Proportion of unsolicited AE
• Proportion of unsolicited AEs within 28 days post each dose injection. Unsolicited AEs are all other adverse events (those that do not fall under the categories of solicited AEs).
Proportion of SAE
• Proportion of any SAE from the vaccination throughout the entire study. An AE or suspected adverse reaction is considered "serious" if at any dose (including overdose): Results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect or is an important medical event that may jeopardize the participant or may require intervention to prevent one of the other outcomes listed above.
Proportion of Adverse Event Of Special Interest (AESI)
• Proportion of any AESI from the vaccination throughout the entire study. AESI are categorized into 1) AESIs included because they are seen with COVID-19 Disease, 2) AESI included because they have a proven or theoretical association with immunization in general, 3) AESI included because they have a proven or theoretical association with specific vaccine platform(s).
Proportion of Medically-Attended Adverse Events (MAAE)
• Proportion of any MAAE from the vaccination throughout the entire study. Medically-attended AEs are AEs with medically-attended visits including hospital, emergency room, or other visits to or from medical personnel for any reason. Routine study visits will not be considered medically attended visits.
Proportion of clinically significant changes in clinical safety laboratory parameters
Proportion of clinically significant changes in clinical safety laboratory parameters at 1, 2 and 4 weeks post each dose injection
Geometric Mean Titer of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (Neutralizing antibody)
Geometric Mean Titer (GMT) of neutralizing antibody to the SARS-CoV-2 measured by wild-type virus neutralization assay from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
Geometric Mean Fold Rise of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (Neutralizing antibody)
Geometric Mean Fold Rise (GMFR) of neutralizing antibody to the SARS-CoV-2 measured by wild-type virus neutralization assay from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
Proportion of participants achieving seroresponse of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (Neutralizing antibody)
Proportion of participants achieving seroresponse (SR defined as at least 4-fold increase from baseline) of wild-type virus neutralizing antibody titer from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
GMT of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (ELISA)
GMT of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
GMFR of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (ELISA)
GMFR of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
Proportion of participants achieving seroresponse of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (ELISA)
Proportion of participants achieving seroresponse (SR defined as at least 4-fold increase from baseline) of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval

Secondary Outcome Measures

GMT of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (Neutralizing antibody)
GMT of neutralizing antibody to the SARS-CoV-2 measured by wild-type virus neutralization assay from baseline to and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection, induced by 1 and 2 doses of AdCLD-CoV19-1 respectively
GMFR of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (Neutralizing antibody)
GMFR of neutralizing antibody to the SARS-CoV-2 measured by wild-type virus neutralization assay from baseline to and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection, induced by 1 and 2 doses of AdCLD-CoV19-1 respectively
Proportion of participants achieving seroresponse of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (Neutralizing antibody)
Proportion of participants achieving seroresponse (SR defined as at least 4-fold increase from baseline) of wild-type virus neutralizing antibody titer from baseline to and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection, induced by 1 and 2 doses of AdCLD-CoV19-1 respectively
GMT of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (ELISA)
GMT of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks, and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection induced by 1 and 2 doses of AdCLD-CoV19-1, respectively
GMFR of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (ELISA)
GMFR of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks, and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection induced by 1 and 2 doses of AdCLD-CoV19-1, respectively
Proportion of participants achieving seroresponse of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (ELISA)
Proportion of participants achieving seroresponse (SR defined as at least 4-fold increase from baseline) of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks, and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection induced by 1 and 2 doses of AdCLD-CoV19-1, respectively
Cell Mediated Immunity (CMI) of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks, 6 months post first dose injection and 2 weeks, 6 and 12 months post second dose injection (Proportion of responders by Interferon-γ (IFN-γ) ELISpot)
Proportion of responders as measured by Interferon-γ (IFN-γ) ELISpot from baseline to 2 weeks, 6 months post first dose injection and 2 weeks, 6 and 12 months post second dose injection induced by 1 and 2 doses of AdCLD-CoV19-1, respectively
Cell Mediated Immunity (CMI) of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks, 6 months post first dose injection and 2 weeks, 6 and 12 months post second dose injection (Median spot forming units by Interferon-γ (IFN-γ) ELISpot)
Median spot forming units as measured by Interferon-γ (IFN-γ) ELISpot from baseline to 2 weeks, 6 months post first dose injection and 2 weeks, 6 and 12 months post second dose injection induced by 1 and 2 doses of AdCLD-CoV19-1, respectively

Full Information

First Posted
June 20, 2022
Last Updated
June 20, 2023
Sponsor
Cellid Co., Ltd.
Collaborators
International Vaccine Institute
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1. Study Identification

Unique Protocol Identification Number
NCT05520970
Brief Title
Safety and Immunogenicity of COVID-19 Vaccine, AdCLD-CoV19-1
Official Title
A Phase IIb, Multicenter, Observer-Blinded, Randomized, Placebo-Controlled Trial to Evaluate the Immunogenicity and Safety of the AdCLD-CoV19-1 in Healthy Adults Aged 19 Years Old and Above
Study Type
Interventional

2. Study Status

Record Verification Date
June 2023
Overall Recruitment Status
Terminated
Why Stopped
Study early terminated based on the sponsor(manufacture)'s decision
Study Start Date
August 19, 2022 (Actual)
Primary Completion Date
November 8, 2022 (Actual)
Study Completion Date
November 8, 2022 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Cellid Co., Ltd.
Collaborators
International Vaccine Institute

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
The immunogenicity and safety profiles of AdCLD-CoV19-1 (5.0×10^10 VP/dose) will be assessed for 1-dose or 2-dose regimen in SARS-CoV-2 seronegative healthy adults.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
COVID-19, Vaccines

7. Study Design

Primary Purpose
Prevention
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Masking Description
The study is designed as observer-blinded.
Allocation
Randomized
Enrollment
4 (Actual)

8. Arms, Groups, and Interventions

Arm Title
2 doses of AdCLD-CoV19-1
Arm Type
Experimental
Arm Description
Group 1 will receive 2 doses of AdCLD-CoV19-1
Arm Title
1 dose of AdCLD-CoV19-1
Arm Type
Experimental
Arm Description
Group 2 will receive 1 doses of AdCLD-CoV19-1 followed by 1 dose of placebo
Arm Title
Placebo
Arm Type
Placebo Comparator
Arm Description
Group 2 will receive 1 doses of placebo followed by 1 dose of AdCLD-CoV19-1 after an interim analysis
Intervention Type
Biological
Intervention Name(s)
AdCLD-CoV19-1
Intervention Description
All 200 participants will receive 2 doses of investigational product by 2 months interval via intramuscular injection in the deltoid region
Primary Outcome Measure Information:
Title
Proportion of immediate adverse events (AE)
Description
• Proportion of immediate AE within 30 minutes post each dose injection
Time Frame
Within 30 minutes post each dose injection
Title
Proportion of solicited local and systemic AE
Description
• Proportion of solicited local and systemic AEs within 7 days post each dose injection. Local AEs at the site of injection: Pain, tenderness, erythema/redness, swelling, induration, pruritis. Systemic AEs: Fever, fatigue/general weakness, chill, headache, myalgia, arthralgia, diarrhea, nausea/vomiting, abdominal pain, mucocutaneous reaction/rash, urticaria, dizziness, cough, dyspnea.
Time Frame
Within 7 days (Days 0 - 6) post each dose injection
Title
Proportion of unsolicited AE
Description
• Proportion of unsolicited AEs within 28 days post each dose injection. Unsolicited AEs are all other adverse events (those that do not fall under the categories of solicited AEs).
Time Frame
Within 28 days post each dose injection
Title
Proportion of SAE
Description
• Proportion of any SAE from the vaccination throughout the entire study. An AE or suspected adverse reaction is considered "serious" if at any dose (including overdose): Results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect or is an important medical event that may jeopardize the participant or may require intervention to prevent one of the other outcomes listed above.
Time Frame
Throughout the study end, an average of 14 months (12 months post second dose injection)
Title
Proportion of Adverse Event Of Special Interest (AESI)
Description
• Proportion of any AESI from the vaccination throughout the entire study. AESI are categorized into 1) AESIs included because they are seen with COVID-19 Disease, 2) AESI included because they have a proven or theoretical association with immunization in general, 3) AESI included because they have a proven or theoretical association with specific vaccine platform(s).
Time Frame
Throughout the study duration, an average of 14 months (12 months post second dose injection)
Title
Proportion of Medically-Attended Adverse Events (MAAE)
Description
• Proportion of any MAAE from the vaccination throughout the entire study. Medically-attended AEs are AEs with medically-attended visits including hospital, emergency room, or other visits to or from medical personnel for any reason. Routine study visits will not be considered medically attended visits.
Time Frame
Throughout the study duration, an average of 14 months (12 months post second dose injection)
Title
Proportion of clinically significant changes in clinical safety laboratory parameters
Description
Proportion of clinically significant changes in clinical safety laboratory parameters at 1, 2 and 4 weeks post each dose injection
Time Frame
At 1, 2 and 4 weeks post each dose injection
Title
Geometric Mean Titer of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (Neutralizing antibody)
Description
Geometric Mean Titer (GMT) of neutralizing antibody to the SARS-CoV-2 measured by wild-type virus neutralization assay from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
Time Frame
At 2 weeks post second dose injection
Title
Geometric Mean Fold Rise of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (Neutralizing antibody)
Description
Geometric Mean Fold Rise (GMFR) of neutralizing antibody to the SARS-CoV-2 measured by wild-type virus neutralization assay from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
Time Frame
At 2 weeks post second dose injection
Title
Proportion of participants achieving seroresponse of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (Neutralizing antibody)
Description
Proportion of participants achieving seroresponse (SR defined as at least 4-fold increase from baseline) of wild-type virus neutralizing antibody titer from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
Time Frame
At 2 weeks post second dose injection
Title
GMT of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (ELISA)
Description
GMT of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
Time Frame
At 2 weeks post second dose injection
Title
GMFR of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (ELISA)
Description
GMFR of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
Time Frame
At 2 weeks post second dose injection
Title
Proportion of participants achieving seroresponse of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks post second dose injection (ELISA)
Description
Proportion of participants achieving seroresponse (SR defined as at least 4-fold increase from baseline) of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks post second dose injection, induced by 2 doses of AdCLD-CoV19-1 at 2-month interval and by 1 dose of AdCLD-CoV19-1 followed by 1 dose of placebo at 2-month interval
Time Frame
At 2 weeks post second dose injection
Secondary Outcome Measure Information:
Title
GMT of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (Neutralizing antibody)
Description
GMT of neutralizing antibody to the SARS-CoV-2 measured by wild-type virus neutralization assay from baseline to and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection, induced by 1 and 2 doses of AdCLD-CoV19-1 respectively
Time Frame
At 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection
Title
GMFR of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (Neutralizing antibody)
Description
GMFR of neutralizing antibody to the SARS-CoV-2 measured by wild-type virus neutralization assay from baseline to and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection, induced by 1 and 2 doses of AdCLD-CoV19-1 respectively
Time Frame
At 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection
Title
Proportion of participants achieving seroresponse of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (Neutralizing antibody)
Description
Proportion of participants achieving seroresponse (SR defined as at least 4-fold increase from baseline) of wild-type virus neutralizing antibody titer from baseline to and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection, induced by 1 and 2 doses of AdCLD-CoV19-1 respectively
Time Frame
At 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection
Title
GMT of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (ELISA)
Description
GMT of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks, and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection induced by 1 and 2 doses of AdCLD-CoV19-1, respectively
Time Frame
At 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection
Title
GMFR of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (ELISA)
Description
GMFR of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks, and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection induced by 1 and 2 doses of AdCLD-CoV19-1, respectively
Time Frame
At 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection
Title
Proportion of participants achieving seroresponse of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection (ELISA)
Description
Proportion of participants achieving seroresponse (SR defined as at least 4-fold increase from baseline) of SARS-CoV-2 Spike-binding ELISA IgG antibody from baseline to 2 weeks, and 1, 3, and 6 months post first dose injection, and at 1, 3, 6 and 12 months post second dose injection induced by 1 and 2 doses of AdCLD-CoV19-1, respectively
Time Frame
At 1, 3, 6 months post first dose injection and at 1, 3, 6 and 12 months post second dose injection
Title
Cell Mediated Immunity (CMI) of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks, 6 months post first dose injection and 2 weeks, 6 and 12 months post second dose injection (Proportion of responders by Interferon-γ (IFN-γ) ELISpot)
Description
Proportion of responders as measured by Interferon-γ (IFN-γ) ELISpot from baseline to 2 weeks, 6 months post first dose injection and 2 weeks, 6 and 12 months post second dose injection induced by 1 and 2 doses of AdCLD-CoV19-1, respectively
Time Frame
At 2 weeks, 6 months post first dose injection and 2 weeks, 6 and 12 months post second dose injection
Title
Cell Mediated Immunity (CMI) of 1 and 2 doses of AdCLD-CoV19-1 from baseline to 2 weeks, 6 months post first dose injection and 2 weeks, 6 and 12 months post second dose injection (Median spot forming units by Interferon-γ (IFN-γ) ELISpot)
Description
Median spot forming units as measured by Interferon-γ (IFN-γ) ELISpot from baseline to 2 weeks, 6 months post first dose injection and 2 weeks, 6 and 12 months post second dose injection induced by 1 and 2 doses of AdCLD-CoV19-1, respectively
Time Frame
At 2 weeks, 6 months post first dose injection and 2 weeks, 6 and 12 months post second dose injection
Other Pre-specified Outcome Measures:
Title
Number of virologically-confirmed COVID-19 cases and clinical features in AdCLD-CoV19-1 recipients during the study period
Description
Occurrences of confirmed COVID-19 Occurrence of symptomatic COVID-19 Occurrences of hospitalized COVID-19 Occurrence of severe COVID-19 Death associated with COVID-19 Severity of symptoms associated with symptomatic COVID-19 episode
Time Frame
Throughout the study duration, an average of 14 months
Title
GMT against the circulating strains, including the variants of concern from baseline to 2 weeks post second dose injection induced by AdCLD-CoV19-1 (Neutralizing antibody)
Description
GMT of neutralizing antibody to the circulating strains measured by wild-type virus neutralization assay from baseline to 2 weeks post second dose injection induced by AdCLD-CoV19-1
Time Frame
At 2 weeks post second dose injection
Title
GMFR against the circulating strains, including the variants of concern from baseline to 2 weeks post second dose injection induced by AdCLD-CoV19-1 (Neutralizing antibody)
Description
GMFR of neutralizing antibody to the circulating strains measured by wild-type virus neutralization assay from baseline to 2 weeks post second dose injection induced by AdCLD-CoV19-1
Time Frame
At 2 weeks post second dose injection
Title
Proportion of participants achieving seroresponse against the circulating strains, including the variants of concern from baseline to 2 weeks post second dose injection induced by AdCLD-CoV19-1 (Neutralizing antibody)
Description
Proportion of participants achieving seroresponse (SR defined as at least 4-fold increase from baseline) of wild-type virus neutralizing antibody titer from baseline to 2 weeks post second dose injection induced by AdCLD-CoV19-1
Time Frame
At 2 weeks post second dose injection

10. Eligibility

Sex
All
Minimum Age & Unit of Time
19 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: Healthy individual aged 19 years and above at consent. Individual willing to provide written informed consent to participate study voluntarily. Individuals who can be followed up during the study period and can comply with the study requirements. Individual who agrees not to donate blood during the study participation Females of childbearing potential with negative serum or urinary pregnancy test on the day of screening. Females of childbearing potential who are using an effective birth control method for at least 4 weeks before the screening and during the study participation. Exclusion Criteria: Prior SARS-CoV-2 infection confirmed by a rapid antibody kit at screening. History of receiving any vaccine (licensed or investigational) for SARS-CoV-2. History of SARS-CoV-1 or MERS vaccination and treatment. Individual determined to be clinically significantly abnormal by the screening outcome based on medical history, physical examination, laboratory evaluations (positive serological tests for Hepatitis B surface antigen (HBsAg), Hepatitis C antibody, and Human Immunodeficiency Virus (HIV) antibody), electrocardiogram (ECG) and Chest X-ray, and the clinical judgment of the investigator. Individual who has received other vaccines from 4 weeks prior to the first dose of test vaccination or planned to receive any vaccine within 4 weeks of the last dose of the study vaccine. Febrile illness (tympanic temperature ≥ 38°C) or acute illness with any clinically significant, respiratory symptoms (e.g., sore throat, cough, sputum) within 3 days prior to the study vaccination. Known history or allergy to study vaccine components and/or excipients or other medications, or any other allergies deemed by the investigator to increase the risk of an adverse event if they were to participate in the trial (e.g., Guillain-Barre Syndrome). Individual with major congenital abnormalities, which in the opinion of investigator may affect the participant's participation in the study. Chronic use of systemic steroids (>10 mg/day prednisone equivalent for periods exceeding 14 days), cytotoxic or other immunosuppressive drugs within the past 6 weeks. Any abnormality or chronic disease which in the opinion of the investigator might be detrimental to the safety of the participant and interfere with the assessment of the study objectives. ① Respiratory diseases: Asthma, Chronic Obstructive Lung Disease (COPD), active or latent tuberculosis which require medication, etc. ② Serious cardiovascular diseases: Congestive heart failure, coronary artery disease, myocardial infarction, uncontrolled hypertension, myocarditis, pericarditis, etc. ③ Neurologic diseases: Epilepsy, seizure within 3 years, migraine, stroke, encephalopathy, Guillain-Barre Syndrome, encephalomyelitis, acute transverse myelitis, etc. ④ Malignant cancer diagnosed within the past 5 years (skin basal cell and squamous cell carcinoma are excluded). ⑤ Immune function disorders, including auto-immune diseases and immunodeficiency diseases (known HIV infection or other immune function disorders) ⑥ Other hepatobiliary, renal, endocrine, urinary tract, muscular skeletal diseases which the investigator considers clinically significant Individual with hereditary or idiopathic angioneurotic edema Individuals with behavioral or cognitive impairment or psychiatric disease or neural disorders that, in the opinion of the investigator, could interfere with the participant's ability to participate in the trial. Individual with splenectomy and transplantation (including solid organ and bone marrow). Individual with past history of thrombocytopenia and/or thrombosis, myocarditis or pericarditis or any other significant cardiac condition. Individual with a known bleeding diathesis, or any condition that may be associated with a prolonged bleeding time resulting in contraindication for IM injections/blood extractions (Those who receive low dose aspirin (less than 100mg/day) are not excluded). Receipt of immunoglobulin or blood-derived products in the past 12 weeks or plan to receive during the study period. Body mass index (BMI) ≥ 30 kg/m2. As per Investigator's medical judgement, an individual could be excluded from the study in spite of meeting all inclusion/exclusion criteria mentioned above. Any female participant who is lactating*, pregnant or planning for pregnancy** during the course of study period. Individual concomitantly enrolled or scheduled to be enrolled in another trial. Individual who is research staff involved with the clinical study or family/household members of research staff.
Facility Information:
Facility Name
Korea University Ansan Hospital
City
Ansan
ZIP/Postal Code
15355
Country
Korea, Republic of
Facility Name
Catholic University Seoul St.Mary's Hospital
City
Seoul
ZIP/Postal Code
06591
Country
Korea, Republic of
Facility Name
Hallym University Kangnam Sacred Heart Hospital
City
Seoul
ZIP/Postal Code
07441
Country
Korea, Republic of
Facility Name
Korea University Guro Hospital
City
Seoul
ZIP/Postal Code
08308
Country
Korea, Republic of

12. IPD Sharing Statement

Plan to Share IPD
No

Learn more about this trial

Safety and Immunogenicity of COVID-19 Vaccine, AdCLD-CoV19-1

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