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NCT06641180 · ClinicalTrials.gov registry record · Phase 3

Study to Evaluate Immunogenicity and Safety of a High-Dose Influenza Vaccine in Adults 50 Through 64 Years of Age

A Phase 3 study of Influenza, sponsored by Sanofi Pasteur, a Sanofi Company.

Completed
Registry status
Phase 3
Development phase
1,180
Enrollment target
20
Study locations

NCT06641180: Completed Phase 3 study of Influenza, sponsored by Sanofi Pasteur, a Sanofi Company.

NCT06641180 is a Phase 3 study of Influenza that has completed, run by Sanofi Pasteur, a Sanofi Company. The registered enrollment target is 1,180 participants, below the 36,796-participant average among 156 other Influenza trials with a reported enrollment target (97% lower). The trial reports 20 study locations across 14 states. According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT06641180, a Phase 3 study of Influenza, has completed, sponsored by Sanofi Pasteur, a Sanofi Company.

COMPLETED
Registry status
Phase 3
Development phase
1,180 participants
Enrollment target
20
Study locations

Study Summary

The purpose of this study is to evaluate Immunogenicity and Safety of a High-Dose (HD) Influenza Vaccine (IV) in Adults 50 through 64 Years of Age.

Primary Outcome

GMTs of anti-influenza antibodies were measured using hemagglutination inhibition (HAI) assay for 3 influenza virus strains: A/H1N1, A/H3N2, and B/Victoria lineage.

Conditions Studied

Interventions

  • BIOLOGICAL High-Dose trivalent influenza vaccine (Split virion, Inactivated)
  • BIOLOGICAL Standard-dose trivalent influenza vaccine (Split virion, Inactivated)

Study Locations (20)

Georgia

  • IACT Health - Columbus - Talbotton Road- Site Number : 8400011 - Columbus
  • Cenexel IRA - iResearch Atlanta- Site Number : 8400007 - Decatur
  • The Hope Clinic of Emory Vaccine Center- Site Number : 8400017 - Decatur
  • Centricity Research - Rincon- Site Number : 8400012 - Rincon
  • Cenexel IRS - iResearch Savannah- Site Number : 8400008 - Savannah

Florida

  • Alliance for Multispeciality Research - Fort Myers- Site Number : 8400019 - Fort Myers
  • Research Centers of America - Hollywood- Site Number : 8400010 - Hollywood

North Carolina

  • Centricity Morehead- Site Number : 8400014 - Morehead City
  • Centricity New Bern- Site Number : 8400015 - New Bern

California

  • CenExel CNS- Site Number : 8400005 - Los Alamitos

Kansas

  • Alliance for Multispeciality Research - Newton- Site Number : 8400003 - Newton

Kentucky

  • Alliance for Multispeciality Research - Lexington- Site Number : 8400002 - Lexington

Maryland

  • CBH Health - Gaithersburg- Site Number : 8400004 - Gaithersburg

New Jersey

  • Hassman Research Institute - Berlin- Site Number : 8400006 - Berlin

Trial Details

FieldValue
Enrollment Target 1,180 participants
Start Date 2024-11-04
Est. Completion 2025-06-24
Phase Phase 3
Sanofi Pasteur, a Sanofi Company

153 total trials

What the finished NCT06641180 record still lists

NCT06641180 is an interventional study that assigns participants to a tested intervention. Its 1,180 participants enrollment target places it among the larger protocols in the corpus, below the 36,796-participant average among 156 other Influenza trials with a reported enrollment target (97% lower).

The record links to 1 condition, with Influenza appearing as the primary indexed condition, and to 2 interventions - of which High-Dose trivalent influenza vaccine (Split virion, Inactivated) is the first listed.

NCT06641180 names 20 study sites across 14 states, led by Georgia, Florida, North Carolina.

Frequently Asked Questions

What is clinical trial NCT06641180 about?

NCT06641180 is a clinical study titled "Study to Evaluate Immunogenicity and Safety of a High-Dose Influenza Vaccine in Adults 50 Through 64 Years of Age". The purpose of this study is to evaluate Immunogenicity and Safety of a High-Dose (HD) Influenza Vaccine (IV) in Adults 50 through 64 Years of Age.

What is the current status of trial NCT06641180?

This trial is currently completed. It is a Phase 3 study. The enrollment target is 1,180 participants. The study started on 2024-11-04. Estimated completion is 2025-06-24.

What conditions does trial NCT06641180 study?

This clinical trial studies the following conditions: Influenza.

What interventions are being tested in trial NCT06641180?

The interventions under investigation include: High-Dose trivalent influenza vaccine (Split virion, Inactivated) (BIOLOGICAL), Standard-dose trivalent influenza vaccine (Split virion, Inactivated) (BIOLOGICAL).

Who is sponsoring clinical trial NCT06641180?

This trial is sponsored by Sanofi Pasteur, a Sanofi Company, which has 153 total clinical trials registered on ClinicalTrials.gov.

Where is trial NCT06641180 being conducted?

This trial has 20 study locations across California, Florida, Georgia, Kansas, Kentucky. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.

Similar trials for Influenza

Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.

Where NCT06641180's enrollment target sits among peer trials

1,180 33rd of 156 higher than 124 of 156 other Influenza trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Influenza trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

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Source: ClinicalTrials.gov NCT06641180, the US trial registry maintained by the National Library of Medicine. NCT06641180 (large enrollment · wide site footprint · completed) retrieved and formatted by PlainTrial, see methodology.