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Study of Monovalent and Bivalent Recombinant Protein Vaccines Against COVID-19 in Adults 18 Years of Age and Older

Terminated · Phase 3 · NCT04904549

Conditions: COVID-19

At a glance

Research payments reported, 2025
$112,842
U.S. investigators named
19
Sites paid
7
Planned or actual enrollment
23,670

About the trial

Sponsor
Sanofi Pasteur, a Sanofi Company
Tested
SARS-CoV-2 adjuvanted recombinant protein vaccine (monovalent D614) (primary series) (biological), SARS-CoV-2 adjuvanted recombinant protein vaccine (bivalent D614 + B.1.351) (primary series) (biological), Placebo (biological), SARS-CoV-2 adjuvanted recombinant protein vaccine (monovalent B.1.351) (booster dose) >= 4 months after last vaccination (biological), SARS-CoV-2 adjuvanted recombinant protein vaccine(monovalent D614)(primary series)& SARS-CoV-2 adjuvanted recombinant protein vaccine(monovalent B.1.351)(booster dose)>=4 months after last vaccination (biological)
Dates
Started 2021-05-26; completion 2024-08-31
Results posted
Yes

The purpose of this Phase III study is to assess the efficacy, safety, and immunogenicity of two CoV2 preS dTM-AS03 vaccines (monovalent and bivalent) as part of primary series vaccinations in a multi-stage approach, as well as a booster injection of a CoV2 preS dTM-AS03 vaccine, in adults 18 years of age and older. A total of approximately 21 046 participants are planned to be enrolled (5080 per study intervention group in Stage 1 and 5443 per study intervention group in Stage 2). Initial, double-blind, primary series study design is planned for 365 days post-last Initial injection (ie, approximately 386 days total) for each participant. Based on decisions of the Study Oversight Group, S…

From ClinicalTrials.gov, last updated 2026-06-03. Full record, eligibility and contacts (opens in a new tab)

Industry funding

Sanofi Pasteur Inc. reported $112,842 in research payments for this study in 2025 (57 payments).

Research payments usually go to hospitals, universities and research sites to run a study, not to the investigators personally. A payment is not evidence of wrongdoing.

U.S. investigators named on this study

Clinicians the company named as principal investigators in its Open Payments reports.

Sites paid to run it

  • Clinical Research Advantage Inc $93,764
  • Coastal Carolina Research Center,incorporation $6,337
  • Black Hills Center for American Indian Health $4,576
  • Rochester Clinical Research,inc $3,679
  • Peninsula Research Associates $2,986
  • Peninsula Research Associates,inc $1,500

Sources: CMS Open Payments research payments (program year 2025) and ClinicalTrials.gov, U.S. National Library of Medicine.