A Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of mRNA-1010 in Healthy Adults

NCT ID: NCT05606965

Last Updated: 2025-11-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

172 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-11-02

Study Completion Date

2025-11-13

Brief Summary

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The main purpose of the study is to evaluate the safety, reactogenicity, and the humoral immunogenicity of mRNA-1010 and comparator influenza vaccines against homologous influenza A and B strains at Day 29.

Detailed Description

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The study consists of 3 parts. Part A of the study was conducted for the 2022-23 influenza season. Part B of the study was conducted in 2023-24 influenza season. Part C of the study will be conducted in 2024-25 influenza season.

Conditions

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Influenza

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

The study design for Part A and Prt C is randomized and Part B is non-randomized.
Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Parts A and B - Arm 1: mRNA-1010 (Age Group 18-50 years)

Participants will receive a single dose of mRNA-1010 by intramuscular (IM) injection on Day 1.

Group Type EXPERIMENTAL

mRNA-1010

Intervention Type BIOLOGICAL

Sterile liquid for injection

Parts A and B - Arm 2: Egg-based Quadrivalent Influenza Vaccine (Age Group 18-50 years)

Participants will receive a single dose of egg-based quadrivalent influenza vaccine by IM injection on Day 1.

Group Type ACTIVE_COMPARATOR

Egg-based Quadrivalent Influenza Vaccine

Intervention Type BIOLOGICAL

Sterile suspension for injection

Parts A and B - Arm 3: Adjuvanted Quadrivalent Influenza Vaccine (Age Group 65-80 years)

Participants will receive a single dose of adjuvanted quadrivalent influenza vaccine by IM injection on Day 1.

Group Type ACTIVE_COMPARATOR

Adjuvanted Quadrivalent Influenza Vaccine

Intervention Type BIOLOGICAL

Sterile injectable emulsion

Parts A and B - Arm 4: Inactivated Influenza Vaccine (Age Group 65-80 years)

Participants will receive a single dose of inactivated influenza vaccine by IM injection on Day 1.

Group Type ACTIVE_COMPARATOR

Inactivated Influenza Vaccine

Intervention Type BIOLOGICAL

Sterile suspension for injection

Parts A and B - Arm 5: mRNA-1010 (Age Group 65-80 years)

Participants will receive a single dose of mRNA-1010 by IM injection on Day 1.

Group Type EXPERIMENTAL

mRNA-1010

Intervention Type BIOLOGICAL

Sterile liquid for injection

Part C - Arm 1: mRNA-1010 and mRNA-1345 (Age Group 18-50 years)

Participants will receive one dose of mRNA-1010 concomitantly injected with one dose of mRNA-1345 in the contralateral arm at Day 1.

Group Type EXPERIMENTAL

mRNA-1010

Intervention Type BIOLOGICAL

Sterile liquid for injection

mRNA-1345

Intervention Type BIOLOGICAL

Sterile liquid for injection

Part C - Arm 2: mRNA-1010 and mRNA-1345 (Age Group 18-50 years)

Participants will receive one dose of mRNA-1010 at Day 1 followed by one dose of mRNA-1345 in the contralateral arm at Day 29.

Group Type EXPERIMENTAL

mRNA-1010

Intervention Type BIOLOGICAL

Sterile liquid for injection

mRNA-1345

Intervention Type BIOLOGICAL

Sterile liquid for injection

Part C - Arm 3: mRNA-1045 (Age Group 18-50 years)

Participants will receive a single dose of mRNA-1045 by IM injection on Day 1.

Group Type EXPERIMENTAL

mRNA-1045

Intervention Type BIOLOGICAL

Sterile liquid for injection

Interventions

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mRNA-1010

Sterile liquid for injection

Intervention Type BIOLOGICAL

Egg-based Quadrivalent Influenza Vaccine

Sterile suspension for injection

Intervention Type BIOLOGICAL

Adjuvanted Quadrivalent Influenza Vaccine

Sterile injectable emulsion

Intervention Type BIOLOGICAL

Inactivated Influenza Vaccine

Sterile suspension for injection

Intervention Type BIOLOGICAL

mRNA-1345

Sterile liquid for injection

Intervention Type BIOLOGICAL

mRNA-1045

Sterile liquid for injection

Intervention Type BIOLOGICAL

Other Intervention Names

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Fluarix® Fluad® Fluzone®

Eligibility Criteria

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Inclusion Criteria

* Adults 18-50 years (Study Parts A, B, and C) and 65-80 years (Study Parts A and B only) of age at the time of consent (Screening Visit).
* Part A only: Body mass index (BMI) of 18 kilograms (kg)/meter (m)\^2 to \< 40 kg/m\^2 at the Screening Visit. There will be no BMI requirement for inclusion in Part B and Part C.
* A person of childbearing potential (POCBP): has a negative highly sensitive pregnancy test at the Screening Visit and before each administration of study intervention; must use a contraceptive method that is highly effective from at least 28 days prior to Day 1 (Baseline) to at least 3 months after the last study intervention; and is not currently pregnant or breastfeeding.

Exclusion Criteria

* Acutely ill or febrile (temperature ≥ 38.0°Celsius (C)/100.4° Fahrenheit (F) hours before or at the D1 vaccination visit. Participants meeting this criterion may be rescheduled within the 28-day screening window.
* Any medical, psychiatric, or occupational condition, including reported history of substance abuse, that, in the opinion of the Investigator, might pose additional risk due to participation in the study or could interfere with the interpretation of study results.
* Reported history of congenital or acquired immunodeficiency, immunocompromizing or immunosuppressive condition, asplenia, or history of recurrent severe infections. Certain immune-mediated conditions that are stable and well-controlled (for example, Hashimoto's thyroid disease) or that do not require systemic immunosuppressive therapy may be permitted at the discretion of the Investigator.
* Dermatologic conditions that could affect local solicited AR assessments (tattoos, psoriatic patches or vitiligo affecting skin over the deltoid injection site area).
* Has received systemic immunosuppressants (for glucocorticoids ≥ 10 mg/day of prednisone or equivalent) for \> 14 days in total within 180 days before vaccination visit (D1) or is anticipating the need for systemic immunosuppressive treatment at any time during participation in the study (including intra-articular steroid injections). Inhaled, nasal, and topical steroids are allowed.
* Has received systemic immunoglobulins or long-acting biological therapies that may suppress or alter immune responses (for example, Infliximab®) or blood products within 90 days before the vaccination visit or plans to receive them during the study.
* Has a history of anaphylaxis or severe hypersensitivity reaction after receipt of any mRNA or influenza vaccines or any components of the mRNA or influenza vaccines, including egg protein.
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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ModernaTX, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Washington University in St. Louis

St Louis, Missouri, United States

Site Status

Countries

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United States

Other Identifiers

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mRNA-CRID-003

Identifier Type: -

Identifier Source: org_study_id

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