We're building a better ClinicalTrials.gov. Check it out and tell us what you think!
Working…
ClinicalTrials.gov
ClinicalTrials.gov Menu

The Safety and Immunogenicity of SCTV01C in Healthy Population Aged ≥18 Years Previously Vaccinated With mRNA COVID-19 Vaccine.

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT05043311
Recruitment Status : Recruiting
First Posted : September 14, 2021
Last Update Posted : January 25, 2022
Sponsor:
Information provided by (Responsible Party):
Sinocelltech Ltd.

Brief Summary:
The objective of this study is to evaluate the safety, tolerability and immunogenicity of SCTV01C in healthy population aged ≥18 years previously vaccinated with mRNA COVID-19 vaccine.

Condition or disease Intervention/treatment Phase
COVID-19 SARS-CoV-2 Infection Biological: SCTV01C Other: Placebo Phase 1 Phase 2

Detailed Description:
This is a Phase I/II/III, multicenter, randomized, double-blinded trial designed to evaluate the safety, tolerability and immunogenicity of SCTV01C in healthy population aged ≥18 years previously vaccinated with mRNA COVID-19 vaccine.

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 300 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description:

This is a randomized, double-blind, placebo-controlled phase I/II clinical trial to evaluate the safety, tolerability and immunogenicity of SCTV01C (A Bivalent Recombinant Trimeric S Protein Vaccine against SARS-CoV-2 Variants) in healthy population aged ≥18 years previously vaccinated with mRNA vaccine against COVID-19.

In the study, participants receive 20 µg dose or placebo, 40 µg dose or placebo.

Masking: Triple (Participant, Care Provider, Investigator)
Primary Purpose: Prevention
Official Title: A Randomized, Double-blinded, Placebo-controlled Phase I/II Clinical Trial to Evaluate the Safety, Tolerability and Immunogenicity of SCTV01C in Healthy Population Aged ≥18 Years Previously Vaccinated With mRNA Vaccine Against COVID-19.
Actual Study Start Date : December 22, 2021
Estimated Primary Completion Date : June 1, 2022
Estimated Study Completion Date : January 1, 2023

Resource links provided by the National Library of Medicine


Arm Intervention/treatment
Experimental: Experimental: 20 µg dose, 18-59 years of age (phase 1/2) Biological: SCTV01C
intramuscular injection

Experimental: Experimental: 20 µg dose, ≥60 years of age (phase 1/2) Biological: SCTV01C
intramuscular injection

Experimental: Experimental: 40 µg dose, 18-59 years of age (phase 1/2) Biological: SCTV01C
intramuscular injection

Experimental: Experimental: 40 µg dose, ≥60 years of age (phase 1/2) Biological: SCTV01C
intramuscular injection

Placebo Comparator: Placebo Comparator: Placebo, 18-59 years of age (phase 1/2) Other: Placebo
intramuscular injetion

Placebo Comparator: Placebo Comparator: Placebo, ≥60 years of age (phase 1/2) Other: Placebo
intramuscular injetion




Primary Outcome Measures :
  1. Incidence and severity of adverse reactions in phase 1 [ Time Frame: Day 0 to Day 7 after the study vaccination ]
  2. GMT and GMI of specific IgG total antibodies against Alpha (B.1.1.7), Beta (B.1.351), Gamma (P.1) and Delta (B.1.617.2) variants of SARS-CoV-2 in phase 2 [ Time Frame: Day 14 after the study vaccination ]
  3. GMT and GMI of neutralizing antibodies titers in phase 2 [ Time Frame: Day 14 after the study vaccination ]
  4. Incidence and severity of solicited AEs in phase 2 [ Time Frame: Day 0 to Day 7 after the study vaccination ]

Secondary Outcome Measures :
  1. Incidence and severity of solicited adverse events in phase 1 [ Time Frame: Day 0 to Day 7 after the study vaccination ]
  2. Incidence and severity of all unsolicited adverse events in phase 1 [ Time Frame: Day 0 to Day 28 after the study vaccination ]
  3. Incidence and severity of laboratory abnormalities related adverse events in phase 1 [ Time Frame: Day 3 after the study vaccination ]
  4. Incidence and severity of serious adverse events (SAEs), adverse events of special interest (AESIs) and medically attended adverse events (MAAEs) in phase 1 [ Time Frame: Within 180 days after the study vaccination ]
  5. GMT and GMI of specific IgG total antibodies against Alpha (B.1.1.7), Beta (B.1.351), Gamma (P.1) and Delta (B 1.617.2) variants of SARS-CoV-2 in phase 1 [ Time Frame: Day 14 after the study vaccination ]
  6. GMT and GMI of neutralizing antibodies titers for Delta (B.1.617.2) variant of SARS-CoV-2 in phase 1 [ Time Frame: Day 14 after the study vaccination ]
  7. GMT and GMI of specific total IgG antibodies against Alpha (B.1.1.7), Beta (B.1.351), Gamma (P.1) and Delta (B.1.617.2) variants of SARS-CoV-2 in phase 2 [ Time Frame: Day 180 after the study vaccinatio ]
  8. GMT and GMI of neutralizing antibodies titers for Delta (B.1.617.2) variant of SARS-CoV-2 in phase 2 [ Time Frame: Day 180 after the study vaccination ]
  9. Incidence and severity of unsolicited adverse events in phase 2 [ Time Frame: Day 0 to Day 28 after the study vaccination ]
  10. Incidence and severity of SAEs, AESIs and MAAEs in phase 2 [ Time Frame: Within 180 days after the study vaccination ]


Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Layout table for eligibility information
Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

Phase I:

Participants are eligible to be included in the study only if the following conditions are met:

  1. Male or female aged ≥18 years old when signing ICF;
  2. Participants that were fully vaccinated with mRNA anti-SARS-CoV-2 vaccine, and the last dose is ≥6 months away from the vaccination of this study.
  3. Participants that can sign written ICF and voluntarily participate in the trial, and can fully understand the trial procedure, the risk of participating in the trial, and other interventions that can be selected if they do not participate in the trial;
  4. Ability to read, understand, and fill in record cards;
  5. Those who are clinically judged to be healthy, the results of physical examination, vital signs and laboratory tests during the screening period are normal, or although beyond the normal reference range, they are judged by investigators to be of no clinical significance;
  6. Fertile men and women of childbearing age voluntarily agree to take effective contraceptive measures from signing ICF to 6 months after the study vaccination; the pregnancy test results of women of childbearing age are negative on screening.

Phase II:

Participants are eligible to be included in the study only if the following conditions are met:

  1. Male or female aged ≥18 years old when signing ICF;
  2. Participants that were fully vaccinated with mRNA anti-SARS-CoV-2 vaccine, and the last dose is ≥6 months away from the vaccination of this study.
  3. Participants that can sign written ICF and voluntarily participate in the trial, and can fully understand the trial procedure, the risk of participating in the trial, and other interventions that can be selected if they do not participate in the trial;
  4. Ability to read, understand, and fill in record cards;
  5. Healthy participants or participants with pre-existing medical conditions who are in stable condition. The "pre-existing medical conditions" include but not limited to hypertension, diabetes, Chronic cholecystitis and cholelithiasis, chronic gastritis that meet the described criteria. A stable medical condition is defined as disease not requiring significant change in therapy or no need for hospitalization as a consequence of worsening disease state for at least 3 months prior to enrollment;
  6. Fertile men and women of childbearing age voluntarily agree to take effective contraceptive measures from signing ICF to 6 months after the study vaccination; the pregnancy test results of women of childbearing age are negative on screening.

Exclusion Criteria:

Phase I:

A participant who conforms to any of the following criteria should not be enrolled in the study:

  1. Previous diagnosis of COVID-19;
  2. High-risk populations (such as medical workers, close contacts of patients with COVID-19 infection, etc.) who are more likely to be infected with SARS-Cov-2;
  3. Presence of fever within 3 days before the study vaccination;
  4. A history of infection or disease related to severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), or corresponding immunosuppressants;
  5. A history of allergic reactions to any vaccine or drug, such as allergy, urticaria, severe skin eczema, dyspnea, laryngeal edema, and angioneurotic edema;
  6. A medical or family history of seizure, epilepsy, encephalopathy and psychosis;
  7. Immunocompromised patients suffering from immunodeficiency diseases, important organ diseases, immune diseases (including Guillain-Barre Syndrome [GBS], systemic lupus erythematosus, rheumatoid arthritis, asplenia or splenectomy caused by any circumstances, and other immune diseases that may have an impact on immune response in the investigator's opinion), etc.;
  8. Long-term use of immunosuppressant therapy or immunomodulatory drugs for ≥14 days within the first six months prior to enrollment, or plan to use immunosuppressant therapy or immunomodulatory drugs within two years after enrollment. Whereas short-term (≤14 days) use of oral, inhaled and topical steroids are allowed.
  9. Patients on antituberculosis therapy;
  10. Previously or currently suffering from clinically significant cardiovascular diseases, or clinically significant disorders related to respiratory system, liver and kidney, gastrointestinal system, endocrine system, blood and lymphatic system, metabolic and skeletal systems, or malignancies, that may affect the study assessment, or cause risks during the study vaccination, or interfere with the data interpretation as determined by the investigator;
  11. Contraindications for intramuscular injection or intravenous blood sampling, including thrombocytopenia and other blood coagulation disorders;
  12. Participants who received any immunoglobulin or blood products in the previous 3 months, or plan to receive similar products during the study;
  13. Participants who received other investigational drugs within 1 month before the study vaccination;
  14. Participants who is at the acute state of disease, such as acute onset of chronic heart failure, acute sore throat, hypertensive encephalopathy, acute pneumonia, acute renal insufficiency, acute cholecystitis;
  15. Participants received other drug used for prevention of COVID-19 (exception for previous mRNA vaccine the participant received) ;
  16. Participants vaccinated with influenza vaccine within 14 days or with other vaccines within 28 days before the study vaccination;
  17. Those who donated blood or had blood loss (≥450 mL) within 3 months before the vaccination or plan to donate blood during the study period;
  18. Those who are pregnant or breast-feeding;
  19. Those who plan to donate ovum or sperms during the study period;
  20. Those who cannot follow the trial procedures, or cannot cooperate to complete the study due to planned relocation or long-term outing;
  21. Those unsuitable for participating in the clinical trial as determined by the investigator because of other abnormalities that are likely to confuse the study results, or non-conformance with the maximal benefits of the participants;
  22. Those who are tested positive for hepatitis B virus (HBV), hepatitis C virus (HCV), syphilis or HIV in terms of serology.

Phase II:

A participant who conforms to any of the following criteria should not be enrolled in the study:

  1. Previous diagnosis of COVID-19;
  2. Presence of fever within 3 days before the study vaccination;
  3. A history of infection or disease related to severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), or corresponding immunosuppressants;
  4. A history of allergic reactions to any vaccine or drug, such as allergy, urticaria, severe skin eczema, dyspnea, laryngeal edema, and angioneurotic edema;
  5. A medical or family history of seizure, epilepsy, encephalopathy and psychosis;
  6. Immunocompromised patients suffering from immunodeficiency diseases, important organ diseases, immune diseases (including Guillain-Barre Syndrome [GBS], systemic lupus erythematosus, rheumatoid arthritis, asplenia or splenectomy caused by any circumstances, and other immune diseases that may have an impact on immune response in the investigator's opinion), etc.;
  7. Long-term use of immunosuppressant therapy or immunomodulatory drugs for ≥14 days within the first six months prior to enrollment, or plan to use immunosuppressant therapy or immunomodulatory drugs within two years after enrollment. Whereas short-term (≤14 days) use of oral, inhaled and topical steroids are allowed.
  8. Patients on antituberculosis therapy;
  9. Presence of severe or uncontrollable cardiovascular diseases, or severe or uncontrollable disorders related to endocrine system, blood and lymphatic system, liver and kidney, respiratory system, metabolic and skeletal systems, or malignancies (except for skin basal cell carcinoma and carcinoma in-situ of cervix) , such as severe heart failure, severe pulmonary heart disease, unstable angina, liver failure, or uremia;
  10. Contraindications for intramuscular injection or intravenous blood sampling, including thrombocytopenia and other blood coagulation disorders;
  11. Participants who received any immunoglobulin or blood products in the previous 3 months, or plan to receive similar products during the study;
  12. Participants who received other investigational drugs within 1 month before the study vaccination;
  13. Participants who is at the acute state of disease, such as acute onset of chronic heart failure, acute sore throat, hypertensive encephalopathy, acute pneumonia, acute renal insufficiency, acute cholecystitis;
  14. Participants received other drug used for prevention of COVID-19 (exception for previous mRNA vaccine the participant received) ;
  15. Participants vaccinated with influenza vaccine within 14 days or with other vaccines within 28 days before the study vaccination;
  16. Those who donated blood or had blood loss (≥450 mL) within 3 months before the vaccination or plan to donate blood during the study period;
  17. Those who are pregnant or breast-feeding;
  18. Those who plan to donate ovum or sperms during the study period;
  19. Those who cannot follow the trial procedures, or cannot cooperate to complete the study due to planned relocation or long-term outing;
  20. Those unsuitable for participating in the clinical trial as determined by the investigator because of other abnormalities that are likely to confuse the study results, or non-conformance with the maximal benefits of the participants;
  21. Those who are tested positive for HIV in terms of serology.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05043311


Contacts
Layout table for location contacts
Contact: Bo Zhong, M.D. +86 13810917207 bo_zhong@sinocelltech.com
Contact: Yu Sun, M.D. +86 13816901291 yu_sun@sinocelltech.com

Locations
Layout table for location information
United Arab Emirates
Al Kuwait Hospital (Al Baraha Hospital) Recruiting
Dubai, United Arab Emirates
Contact    +971 4 271 0000    albaraha-hospital@moh.gov.ae   
Sponsors and Collaborators
Sinocelltech Ltd.
Investigators
Layout table for investigator information
Study Director: Yang Wang, Ph.D. Sinocelltech Ltd.
Layout table for additonal information
Responsible Party: Sinocelltech Ltd.
ClinicalTrials.gov Identifier: NCT05043311    
Other Study ID Numbers: SCTV01C-01-2
First Posted: September 14, 2021    Key Record Dates
Last Update Posted: January 25, 2022
Last Verified: January 2022
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Sinocelltech Ltd.:
COVID-19
SARS-CoV-2
Vaccine
Additional relevant MeSH terms:
Layout table for MeSH terms
COVID-19
Respiratory Tract Infections
Infections
Pneumonia, Viral
Pneumonia
Virus Diseases
Coronavirus Infections
Coronaviridae Infections
Nidovirales Infections
RNA Virus Infections
Lung Diseases
Respiratory Tract Diseases