SARS-CoV-2 Vaccine (COH04S1) Versus Emergency Use Authorization SARS-COV-2 Vaccine for the Treatment of COVID-19 in Patients With Blood Cancer
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|ClinicalTrials.gov Identifier: NCT04977024|
Recruitment Status : Recruiting
First Posted : July 26, 2021
Last Update Posted : November 4, 2021
This phase II trial studies the immune response to COH04S1 compared to Emergency Use Authorization (EUA) SARS-COV-2 vaccine in patients with blood cancer who have received stem cell transplant or cellular therapy.
COH04S1 belongs to a category called modified vaccinia Ankara (MVA) vaccines, created from a new version of MVA, called synthetic MVA. COH04S1 works by inducing immunity (the ability to recognize and fight against an infection) to SARS-CoV-2. The immune system is stimulated to produce antibodies against SARS-CoV-2 that would block the virus from entering healthy cells. The immune system also grows new disease fighting T cells that can recognize and destroy infected cells. Giving COH04S1 after cellular therapy may work better in reducing the chances of contracting coronavirus disease 2019 (COVID-19) or developing a severe form of COVID-19 disease in patients with blood cancer compared to EUA SARS-CoV-2 vaccine.
|Condition or disease||Intervention/treatment||Phase|
|COVID-19 Infection Hematopoietic and Lymphoid System Neoplasm Leukemia Lymphoma Plasma Cell Myeloma||Biological: COVID-19 Vaccine Other: Diagnostic Laboratory Biomarker Analysis Biological: Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1||Phase 2|
I. Evaluate the biological activity and the role of timing of 2 injections of COH04S1 vaccine administered at 2.5x10e8 PFU/dose compared to EUA vaccine.
I. Assess safety of COH04S1 vaccine. II. Evaluation of SARS-CoV-2 S and N-specific Th1 vs Th2 polarization. III. Evaluate T-cell levels and function. IV. Evaluate activated/cycling and memory phenotype markers. V. Evaluate durability of immune responses. VI. Evaluate maintenance of immunity that can be associated with protection over the study period.
I. Surveillance for incidental COVID-19 infection during follow-up (1 year).
OUTLINE: Patients are randomized to 1 of 2 arms.
ARM I : Patients receive one dose of COH04S1 intramuscularly (IM) in the upper arm on days 0 and 28.
ARM II : Patients receive one dose of EUA SARS-CoV-2 vaccine IM in the upper arm on days 0 and 28.
After the completion of study treatment, patients are followed up at days 7, 90, 120, 180, and 365.
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||240 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||Triple (Participant, Care Provider, Investigator)|
|Official Title:||A Multi-Center, Observer-Blinded, EUA Vaccine-Controlled, Randomized Phase II Study to Evaluate the Biological Activity of COH04S1 (SARS-CoV-2 Vaccine) Compared to EUA SARS-CoV-2 Vaccines in Hematology Patients Who Have Received Cellular Therapy (HCT or CAR-T)|
|Actual Study Start Date :||September 27, 2021|
|Estimated Primary Completion Date :||June 1, 2023|
|Estimated Study Completion Date :||June 1, 2023|
Experimental: Arm I (COH04S1)
Patients receive one dose of COH04S1 IM in the upper arm on days 0 and 28.
Other: Diagnostic Laboratory Biomarker Analysis
Biological: Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1
Experimental: Arm II (EUA SARS-CoV-2 vaccine)
Patients receive one dose of EUA SARS-CoV-2 vaccine IM in the upper arm on days 0 and 28.
Biological: COVID-19 Vaccine
Receive EUA SARS-CoV-2 vaccine IM
Other: Diagnostic Laboratory Biomarker Analysis
- Biological response [ Time Frame: At 28 days post the second vaccine injection ]Based on at least a 3-fold increase in severe acute respiratory syndrome coronavirus 2 (SARSCoV-2)- neutralizing antibodies or interferon (IFN)-gamma levels. Will compare the immune response at day 28 post the second injection between COH04S1 and Emergency Use Authorization using a one-sided stratified Cochran-Mantel-Haenszel test. The point estimate and 95% confidence interval will be calculated per arm for immune response at day 28 post the second injection. Bar charts will be generated to show the immune response rate by arm overall, and by arm and strata.
- Incidence of moderate adverse events (AEs) [ Time Frame: Up to 365 days ]Will assess grade 2 AEs based on Common Terminology Criteria for Adverse Events (CTCAE) version 5.0, at least probably related to protocol treatment.
- Incidence of unacceptable AEs [ Time Frame: Up to 365 days ]Will assess grade 3-5 AEs based on CTCAE version 5.0, at least probably related to protocol treatment.
- Non-relapse mortality [ Time Frame: Up to 365 days ]Defined as death from any cause other than relapse of underlying hematologic malignancy recorded from the first injection to day 365 among all subjects.
- Incidence of graft-versus-host disease (GVHD) [ Time Frame: Up to 365 days ]Will assess the incidence of moderate/severe chronic and late-onset grade III-IV acute GVHD among allogeneic hematopoietic cell transplantation recipients only.
- Incidence of Severe coronavirus disease 2019 (COVID-19) [ Time Frame: Up to 365 days ]
Will assess for confirmed COVID-19 infection with one of the following additional features from the first injection to day 365:
- Clinical sign at rest indicative of severe systemic illness (respiratory rate >= 30 breaths per minute, heart rate >= 125 beats per minute, oxygen saturation =< 93% on room air at sea level, or partial pressure of oxygen/fraction of inspired oxygen < 300 mm Hg);
- Respiratory failure (defined as needing high-flow oxygen, noninvasive ventilation, mechanical ventilation, or extracorporeal membrane oxygenation);
- Evidence of shock (systolic blood pressure <90 mmHg, diastolic blood pressure < 60 mmHg, or requiring vasopressors);
- Significant acute renal, hepatic, or neurologic dysfunction;
- Admission to an intensive care unit;
- Th1 vs Th2 polarization [ Time Frame: Up to 365 days ]Will evaluate SARS-CoV-2-S and -N specific Th1 (IFN gamma ng/ml) and Th2 (IL-4 ng/ml) cytokine levels following stimulation with overlapping peptide libraries specific for SARSCoV-2. Will perform dual fluorescence ELISPOT assay to detect and quantify cells secreting IFN gamma and IL-4.
- Antigen specific T cell responses to the COH04S1 vaccine [ Time Frame: Up to 365 days ]Assessed using overlapping S and N peptide libraries specific for SARS-CoV-2.
- Percentages of activated/cycling and memory phenotype markers on the surface of antigen-specific T cells [ Time Frame: Up to 365 days ]In vaccine responders, SARS-CoV-2 specific T cells will be further evaluated by measuring levels percentages of CD137 surface marker expressed on CD3+ CD8+ and CD3+ CD4+ T cells stimulated for 24 hours with either SARS-CoV-2-S or SARS-CoV-2-N overlapping peptide libraries. Will also assess the activated/cycling phenotype percentages by using the CD38, HLA-DR, Ki67 and PD1 surface markers.
- Humoral immunity [ Time Frame: Up to 365 days ]Will measure SARS-CoV-2 specific antibodies, including IgA, IgG, and IgM, in serum and saliva by enzyme linked immunosorbent assay (ELISA). Pools of SARS-CoV-2 convalescent serum or SARS-CoV-2 negative serum will be used as a positive- and negative-controls (University of California at San Diego), respectively. Antibody levels in recipients will be graphed on a time plot and compared to baseline level in donors.
- Neutralizing antibodies [ Time Frame: Up to 365 days ]Will measure and isolate the generation of neutralizing antibodies in participants, and test whether they prevent infection of a susceptible cell line with a pseudo-type of the SARS-CoV-2 virus. Evaluation of SARS-CoV-2 neutralizing antibody titers in serum samples of COH04S1 vaccinated volunteers will be performed. Will use SARS-CoV-2 lentiviral pseudovirus expressing the Spike antigen and infecting 293T cell lines engineered to express ACE2. Spike incorporation into the pseudovirus will be verified and quantified by Western blot using Spike-specific antibodies and by ELISA.
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): NCT04977024
|United States, California|
|City of Hope Medical Center||Recruiting|
|Duarte, California, United States, 91010|
|Contact: Sanjeet S. Dadwal 626-218-8202 firstname.lastname@example.org|
|Principal Investigator: Sanjeet S. Dadwal|
|Principal Investigator:||Sanjeet S Dadwal||City of Hope Medical Center|