Phase I-II Trial of Dendritic Cell Vaccine to Prevent COVID-19 in Adults

May 1, 2023 updated by: Aivita Biomedical, Inc.

Adaptive Phase I-II Clinical Trial of Preventive Vaccine Consisting of Autologous Dendritic Cells Previously Incubated With S-protein From Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2), in Subjects Negative for COVID-19 Infection and Anti-SARS-CoV-2 Antibodies

This is an adaptive Phase I-II trial of a vaccine consisting of autologous dendritic cells previously loaded ex vivo with SARS-CoV-2 spike protein, with or without GM-CSF, to prevent COVID-19 in adults.

Study Overview

Status

Withdrawn

Conditions

Intervention / Treatment

Detailed Description

Subjects eligible for treatment will be those who at baseline, are not actively infected with SARS-CoV-2, have no evidence of prior infection with SARS-CoV-2 based on serologic testing, and give informed consent for a vaccination with AV-COVID-19. The patient population will include the elderly and others at higher risk for poor outcomes after COVID-19 infection. For this reason, individuals will not be excluded solely on the basis of age, body mass index, history of hypertension, diabetes, cancer, or autoimmune disease.

After enrolling for screening, subjects will undergo a nasal swab test to exclude active COVID-19 infection and a rapid test for anti-coronavirus antibodies to exclude pre-existing anti-SARS-CoV-2 antibodies. 50 mL of blood will be collected, from which peripheral blood monocytes will be isolated and differentiated into DC before incubation with SARS-CoV-2 S-protein, during which time the protein is digested into 9 to 25 amino acid peptide sequences presented on the dendrites of DC in conjunction with histocompatibility class I and class II molecules. Safety and quality testing will be performed on a small quantity of the batch, and the remaining AV-COVID-19 will be cryopreserved for shipping to the treatment site.

Once the Study Drug is ready, if eligible, the subject will be seen at Study Week-0 for treatment. Prior to injection of the Study Drug, a nasal swab test will be collected to confirm that they are still negative for COVID-19, and blood will be drawn to determine baseline levels of anti-SARS-CoV-2 antibodies. At the treatment site, the product will be thawed and admixed with saline or (saline with GM-CSF), and within 5 hours of thawing, will be injected SC via a 25-gauge needle

Study Type

Interventional

Phase

  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • 18 years or older, in relatively good health with adequate physical and mental function, including factors associated with in increased risk for medical complications associated with COVID-19 infection or increased risk for exposure to SARS-CoV-2

Exclusion Criteria:

  • Active COVID-19 infection by PCR testing, Pre-existing IgG or IgM SARS-CoV-2 antibodies, Pregnant, Known hypersensitivity to GM-CSF, Known active immune deficiency disease or active HIV, HBV, HCV, On active treatment with corticosteroids or other immunosupressive agent, Participated in previous COVID-19 vaccine study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Non-Randomized
  • Interventional Model: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Phase 1 Antigen Dose Exploration
AV-COVID-19 consisting of autologous DC loaded with 0.1 mcg, 0.33 mcg or 1.0 mcg SARS-CoV-2 spike protein, with or without GM-CSF
Autologous dendritic cells previously loaded ex vivo with SARS-CoV-2 spike protein
Other Names:
  • DC-ATA, DCV
Experimental: Phase 2
Separate cohorts of patients who have 0 or >1 risk factor related to poor outcome for COVID-19 infection will receive AV-COVID-19 consisting of optimal antigen and GM-CSF formulation.
Autologous dendritic cells previously loaded ex vivo with SARS-CoV-2 spike protein
Other Names:
  • DC-ATA, DCV

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Confirm safety
Time Frame: 1 year
Confirm safety of AV-COVID-19 by adverse event monitoring
1 year

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Suggestion of efficacy
Time Frame: 1 month
Measurement of IgG in subject blood
1 month
Optimal dose of SARS-CoV-2 antigen and GM-CSF
Time Frame: 1 months
Measurement of IgG in subject blood
1 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Chair: Robert O Dillman, MD, AIVITA Biomedical

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

January 1, 2023

Primary Completion (Anticipated)

June 1, 2023

Study Completion (Anticipated)

January 1, 2024

Study Registration Dates

First Submitted

May 11, 2020

First Submitted That Met QC Criteria

May 11, 2020

First Posted (Actual)

May 13, 2020

Study Record Updates

Last Update Posted (Actual)

May 3, 2023

Last Update Submitted That Met QC Criteria

May 1, 2023

Last Verified

May 1, 2023

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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