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Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1

Phase 2

COVID-19 Infection | Vaccine | Infectious Disease |GeoVax Labs, Inc.|Trials Updated: Feb 10, 2026

Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1 development status

Highest phase Phase 2
Registered trials 1 across 1 sponsor since Nov 2001

Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1 target and mechanism

ModalityVaccine

Also known as COH04S1, SARS-CoV-2 Vaccine COH04S1, sMVA-based SARS-CoV-2 Vaccine COH04S1, GEO-CM04S1

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials2
Total Enrollment182

FDA Designations

No designations recorded

Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1 clinical trials

Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1 · 2 trials · 5 indications

Phase 2 1Phase 1/2 1
NCT04977024SARS-CoV-2 Vaccine (GEO-CM04S1) Versus mRNA SARS-COV-2 Vaccine in Patients With Blood CancerCOVID-19 Infection
ACTIVE NOT_RECRUITING63 Analytics
PHASE2ACTIVE NOT_RECRUITING
SARS-CoV-2 Vaccine (GEO-CM04S1) Versus mRNA SARS-COV-2 Vaccine in Patients With Blood Cancer
COVID-19 InfectionUnlock trial analytics

Study Design & Arms

Interventions

NameTypeDescription
COVID-19 VaccineBIOLOGICALReceive SOC mRNA SARS-CoV-2 vaccine IM
Diagnostic Laboratory Biomarker AnalysisOTHERCorrelative studies
Synthetic MVA-based SARS-CoV-2 Vaccine GEO-CM04S1BIOLOGICALGiven IM
Placebo AdministrationDRUGGiven IM in the non-dominant upper arm
Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1BIOLOGICALGiven IM in the non-dominant upper arm
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Frequently asked questions about Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1

What is the Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1?

It is an investigational vaccine candidate designed to prevent COVID-19 infection. It is being developed by GeoVax Labs, Inc. under the ticker GOVX. The vaccine is based on a synthetic modified vaccinia Ankara (MVA) platform and is in Phase 2 clinical development. It has been studied in one completed clinical trial.

What is the Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1 used for?

It is being developed for the prevention of COVID-19 infection. The vaccine candidate is intended to protect against SARS-CoV-2, the virus that causes COVID-19. It is currently in Phase 2 clinical development and has been evaluated in a completed Phase 1/2 trial.

Who is developing the Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1?

GeoVax Labs, Inc., which trades under the ticker GOVX, is developing the Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1. The company is responsible for the clinical development of this COVID-19 vaccine candidate.

What phase is the Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1 in?

The Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1 is in Phase 2 clinical development. It has completed one Phase 1/2 clinical trial. It is an investigational vaccine and has not been approved by the FDA.

What clinical trials is the Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1 in?

The Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1 has been studied in one completed clinical trial, NCT04639466, titled "A Synthetic MVA-based SARS-CoV-2 Vaccine, GEO-CM04S1, for the Prevention of COVID-19 Infection." This Phase 1/2 trial enrolled 119 participants and evaluated the vaccine for the prevention of COVID-19 infection.