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Safety and Immunogenicity of LNP-nCOV saRNA-02 Vaccine Against SARS-CoV-2, the Causative Agent of COVID-19

NCT04934111 · Status: UNKNOWN · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 42

Last updated 2022-04-22

No results posted yet for this study

Summary

COVAC Uganda is a study that is looking at the use of an innovative self-amplifying RNA (saRNA) vaccine (LNP-nCOV saRNA-02) against the virus (SARS-CoV-2) that causes COVID-19 and assessing the immune response in SARS-CoV-2 antibody seronegative and seropositive individuals. saRNA is designed to amplify the quantity of RNA upon injection to produce further antigen, thereby enabling lower doses for administration. In the trial "COVAC1", Imperial College London is currently evaluating one COVID-19 saRNA vaccine candidate in doses from 0.1-10ug for individuals who are seronegative for SARS-CoV-2 antibodies at baseline. Interim analyses of COVAC1 has shown a dose dependent response; however, up to 50% of seronegative participants receiving doses of 2.5-10ug do not seroconvert. The investigators hypothesize that a lack of seroconversion is due to type I and III interferon (IFN) production, which can inhibit translation and degrade cellular mRNA. Another variable that can enhance antibody production is serological history: recent studies have shown that seropositive individuals respond significantly better than naïve individuals who received the Pfizer or Moderna RNA-based COVID-19 vaccine. Therefore, designing the saRNA backbone to dampen IFN production and evaluating this in individuals seropositive at baseline will inform the optimised use of this innovative technology. In COVAC Uganda, the investigators aim to test an saRNA vaccine modified to dampen the activation of type I and III IFN, to increase antibody production, for individuals who are seronegative and seropositive for SARS-CoV-2 antibodies at baseline, to evaluate whether people with pre-existing seropositivity have enhanced immune responses compared to those without. This trial is NOT looking at whether or not the vaccine is effective in terms of protection. It is just assessing whether and how well the immune system responds based on SARS-CoV-2 antibodies at baseline and its safety.

Conditions

Interventions

DRUG

LNP-nCOV saRNA-02 Vaccine

a self-amplifying ribonucleic acid (saRNA) vaccine encoding the S glycoprotein of SARS-CoV-2, the causative agent of COVID-19

Sponsors & Collaborators

  • MRC/UVRI and LSHTM Uganda Research Unit

    lead OTHER

Principal Investigators

  • Pontiano Kaleebu, PhD · London School of Hygiene and Tropical Medicine

Study Design

Allocation
NA
Purpose
PREVENTION
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2021-12-02
Primary Completion
2022-11-01
Completion
2022-12-31

Countries

  • Uganda

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04934111 on ClinicalTrials.gov