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Study details
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A Vaccine Booster (GEO-CM04S1) for the Prevention of COVID-19 in Patients With Chronic Lymphocytic Leukemia

City of Hope Medical Center
NCT IDNCT05672355ClinicalTrials.gov data as of Apr 2026
Phase

Phase 2

Target enrollment

80

Study length

about 2.5 years

Ages

18+

Locations

1 site in CA

What this study is about

This trial is testing a new vaccine, GEO-CM04S1, to see if it helps prevent COVID-19 infections in people with chronic lymphocytic leukemia. It compares this vaccine to the current standard of care vaccine and looks at whether the new vaccine boosts immunity better in patients with CLL.

Simplified from trial records by PatientMatch.

What you may be asked to do

  • 1.Receive Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1
  • 2.Receive mRNA COVID-19 Vaccine
  • 3.Undergo Biospecimen Collection

Participation Burden

What's physically and logistically required of participants.

Logistics & Travel
In-person visits

Requires travel to a study site

Physical Intervention
Injection / IVInjection / IV

How treatment is administered

Treatment Assignment
Randomized & Blinded

You may get a placebo/standard care, and you won't know which.

Extracted study details

Pulled from the trial record to show what is being tested and what the study is measuring.

Drug classes

vaccine, Immunological Agents

Drug routes

injection

Endpoints

Secondary: Confirmed COVID-19 infection by PCR viral load, Incidence of AEs unacceptable toxicity (UT), Incidence of adverse events (AEs) moderate toxicity (MOD), Incidence of serious adverse events (SAEs), SARS-CoV-2-S and -N specific IFNgamma (Th1) and IL-4 (Th2) cytokine levels following stimulation with overlapping peptide libraries specific for SARS-CoV-2

Procedures

diagnostic

Body systems

Oncology, Infectious