A Study to Evaluate the Safety and Immunogenicity of mRNA-1975 and mRNA-1982 Against Lyme Disease in Participants 18 Through 70 Years of Age

July 6, 2026 updated by: ModernaTX, Inc.

A Phase 1/2, Randomized, Observer-blind, Placebo-controlled, Dose-ranging Study to Evaluate the Safety and Immunogenicity of Heptavalent mRNA-1975 (SR1-7) and Monovalent mRNA-1982 (SR1) in Parallel Against Lyme Disease in Healthy Participants 18 Through 70 Years of Age

The purpose of this study is to evaluate the safety and immunogenicity in parallel of heptavalent mRNA-1975 and monovalent mRNA-1982 against Lyme disease in healthy adult participants.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
807

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Connecticut
      • Milford, Connecticut, United States, 06460
        • Clinical Research Consulting, LLC
      • Stamford, Connecticut, United States, 06905
        • Stamford Therapeutics Consortium
      • Waterbury, Connecticut, United States, 06708
        • Chase Medical Research, LLC
    • Florida
      • Jacksonville, Florida, United States, 32216
        • Encore Research Group-Jacksonville Center for Clinical Research
      • Lake Mary, Florida, United States, 32746
        • University Clinical Research-DeLand, LLC d/b/a Accel Research Sites
    • Georgia
      • Stockbridge, Georgia, United States, 30281
        • Clinical Research Atlanta, headlands LLC
    • Kansas
      • Lenexa, Kansas, United States, 66219
        • Johnson County Clin-Trials, Inc. (JCCT)
    • Maryland
      • Columbia, Maryland, United States, 21045
        • Centennial Medical Group
      • Rockville, Maryland, United States, 20850
        • Advanced Primary and Geriatric Care
    • Massachusetts
      • Brookline, Massachusetts, United States, 02445
        • DM Clinical Research - Brookline
    • Minnesota
      • Minneapolis, Minnesota, United States, 55402
        • Clinical Research Institute, Inc.
    • Nebraska
      • Omaha, Nebraska, United States, 68134
        • Meridian Clinical Research - Omaha
    • New Hampshire
      • Newington, New Hampshire, United States, 03801
        • ActivMed Research LLC
    • New York
      • Rochester, New York, United States, 14609
        • Rochester Clinical Research, Inc.
    • Oklahoma
      • Oklahoma City, Oklahoma, United States, 73112
        • Lynn Health Science Institute
    • Pennsylvania
      • Hatboro, Pennsylvania, United States, 19040
        • Hatboro Medical Associates/CCT Research
    • Rhode Island
      • Providence, Rhode Island, United States, 02886
        • Velocity Clinical Research Providence
    • Texas
      • Fort Worth, Texas, United States, 76135
        • Benchmark Research
      • Tomball, Texas, United States, 77375
        • DM Clinical Research
    • Virginia
      • Charlottesville, Virginia, United States, 22911
        • Charlottesville Medical Research Center, LLC

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Body mass index of 18 to 39 kilograms/square meter (inclusive) at the Screening Visit.
  • Participants of nonchildbearing potential may be enrolled in the study.
  • For female participants of childbearing potential: negative pregnancy test, adequate contraception or has abstained from all activities that could result in pregnancy during the study intervention period, and agreement to continue adequate contraception or abstinence through 3 months following last study injection.

Exclusion Criteria:

  • Have chronic illness related to Lyme disease or an active symptomatic Lyme disease infection as suspected or diagnosed by a physician.
  • Received treatment for Lyme disease within the prior 3 months.
  • Had previous vaccination against Lyme disease or participated in the past in any vaccine study for Lyme disease.
  • Had a tick bite within 4 weeks prior to the study injection visit.
  • Dermatologic conditions that could affect local solicited AR assessments (for example, tattoos; psoriasis patches affecting skin over the deltoid areas).
  • Received systemic immunosuppressants for >14 days in total within 180 days prior to the Screening Visit (for corticosteroids, ≥10 milligrams/day of prednisone or equivalent) or is anticipating the need for systemic immunosuppressive treatment at any time during participation in the study.
  • History of myocarditis, pericarditis, or myopericarditis regardless of the timing of past medical history.
  • History of anaphylaxis, urticaria, or other significant adverse reaction requiring medical intervention after receipt of a vaccine or intervention that includes one or more of the same components contained in the study injection.
  • Has received systemic immunoglobulins, long-acting biological therapies that affect immune responses (for example, infliximab) or blood products within 90 days prior to the Screening Visit or plans to receive them during the study.

Note: Other inclusion and exclusion criteria may apply.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: mRNA-1975: Dose 1
Participants will receive 3 intramuscular (IM) injections of the mRNA-1975 vaccine at Dose Level 1 on Days 1, 57, and 169.
Biological: mRNA-1975
Dispersion delivered IM
Other Names:
  • SR1-7
Experimental: mRNA-1975: Dose 2
Participants will receive 3 IM injections of the mRNA-1975 vaccine at Dose level 2 on Days 1, 57, and 169.
Biological: mRNA-1975
Dispersion delivered IM
Other Names:
  • SR1-7
Experimental: mRNA-1975: Dose 3
Participants will receive 3 IM injections of the mRNA-1975 vaccine at Dose Level 3 on Days 1, 57, and 169.
Biological: mRNA-1975
Dispersion delivered IM
Other Names:
  • SR1-7
Experimental: mRNA-1975: Dose 4
Participants will receive 3 IM injections of the mRNA-1975 vaccine at Dose level 4 on Days 1, 57, and 169.
Biological: mRNA-1975
Dispersion delivered IM
Other Names:
  • SR1-7
Experimental: mRNA-1982: Dose 1
Participants will receive 3 IM injections of the mRNA-1982 vaccine at Dose Level 1 on Days 1, 57, and 169.
Biological: mRNA-1982
Dispersion delivered IM
Other Names:
  • SR1
Experimental: mRNA-1982: Dose 2
Participants will receive 3 IM injections of the mRNA-1982 vaccine at Dose Level 2 on Days 1, 57, and 169.
Biological: mRNA-1982
Dispersion delivered IM
Other Names:
  • SR1
Experimental: mRNA-1982: Dose 3
Participants will receive 3 IM injections of the mRNA-1982 vaccine at Dose level 3 on Days 1, 57, and 169.
Biological: mRNA-1982
Dispersion delivered IM
Other Names:
  • SR1
Placebo Comparator: Placebo
Participants will receive 3 IM injections of vaccine-matching placebo on Days 1, 57, and 169.
Biological: Placebo
Solution delivered IM

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Participants With Solicited Local and Systemic Adverse Reactions (ARs) Within 7 Days After Day 1 Injection
Time Frame: Up to 7 days after Day 1 injection
Solicited ARs were collected in an electronic diary (eDiary). Local ARs: injection site pain, erythema (redness), swelling/induration (hardness); and axillary (underarm) swelling or tenderness ipsilateral to the side of injection. Systemic ARs: fever, headache, fatigue, myalgia, arthralgia, nausea/vomiting, and chills. Note, not all solicited ARs were considered adverse events (AEs). Investigator reviewed whether the solicited AR was also to be recorded as an AE. A summary of serious AEs (SAEs) and nonserious AEs ("Other"), regardless of causality, is located in the "Reported Adverse Events" section.
Up to 7 days after Day 1 injection
Number of Participants With Solicited Local and Systemic ARs Within 7 Days After Day 57 Injection
Time Frame: Up to 7 days after Day 57 injection
Solicited ARs were collected in an eDiary. Local ARs: injection site pain, erythema (redness), swelling/induration (hardness); and axillary (underarm) swelling or tenderness ipsilateral to the side of injection. Systemic ARs: fever, headache, fatigue, myalgia, arthralgia, nausea/vomiting, and chills. Note, not all solicited ARs were considered AEs. Investigator reviewed whether the solicited AR was also to be recorded as an AE. A summary of SAEs and nonserious AEs ("Other"), regardless of causality, is located in the "Reported Adverse Events" section.
Up to 7 days after Day 57 injection
Number of Participants With Solicited Local and Systemic ARs Within 7 Days After Day 169 Injection
Time Frame: Up to 7 days after Day 169 injection
Solicited ARs were collected in an eDiary. Local ARs: injection site pain, erythema (redness), swelling/induration (hardness); and axillary (underarm) swelling or tenderness ipsilateral to the side of injection. Systemic ARs: fever, headache, fatigue, myalgia, arthralgia, nausea/vomiting, and chills. Note, not all solicited ARs were considered AEs. Investigator reviewed whether the solicited AR was also to be recorded as an AE. A summary of SAEs and nonserious AEs ("Other"), regardless of causality, is located in the "Reported Adverse Events" section.
Up to 7 days after Day 169 injection
Number of Participants With Unsolicited AEs
Time Frame: Up to 28 days post any injection
An AE was defined as any untoward medical occurrence associated with the use of a drug in humans, whether or not considered drug related. Any abnormal laboratory test result (hematology, clinical chemistry, or prothrombin time [PT]/partial thromboplastin time [PTT]) or other safety assessment (for example, electrocardiogram, radiological scan, vital sign measurement), including one that worsened from baseline and was considered clinically significant in the medical and scientific judgment of the Investigator was recorded as an AE. A summary of SAEs and all nonserious AEs ("Other"), regardless of causality, is located in the "Reported Adverse Events" section.
Up to 28 days post any injection
Number of Participants With Medically Attended AEs (MAAEs), Adverse Events of Special Interest (AESIs), SAEs, and AEs Leading to Study Discontinuation
Time Frame: Day 1 up to Month 18
A MAAE is an AE that led to an unscheduled visit to a healthcare practitioner. An SAE was defined as any AE that resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in disability, was a congenital anomaly/birth defect, or was an important medical event. An AESI was an AE (serious or nonserious) of scientific and medical concern specific to the Sponsor's product or program, for which ongoing monitoring and immediate notification by the Investigator to the Sponsor were required. A summary of SAEs and all nonserious AEs ("Other"), regardless of causality, is located in the "Reported Adverse Events" section.
Day 1 up to Month 18

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Geometric Mean Concentration (GMC) of Anti-Outer Surface Protein (Anti-OspA) Binding Immunoglobulin (IgG) Antibodies for Serotype (SR-1) Antigen Measured by Enzyme-Linked Immunosorbent Assay (ELISA)
Time Frame: Days 1, 29, 85 and 197
Antibody values reported as below lower limit of quantification (LLOQ) were replaced by 0.5*LLOQ. Values reported greater than upper limit of quantification (ULOQ) were replaced by the ULOQ. LLOQ was 41.4 nanograms (ng)/milliliter (mL) and ULOQ was 428000 ng/mL for manual assay; LLOQ was 47.6 ng/mL and 583000 ng/mL for automated assay for SR-1 IgG antibody. 95% confidence interval (CI) for GM value was calculated based on the t-distribution of the log-transformed values , then back transformed to the original scale for presentation.
Days 1, 29, 85 and 197
GMC of Anti-OspA Binding IgG Antibodies for SR-2 Antigen Measured by ELISA
Time Frame: Days 1, 29, 85, and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 30 ng/mL and ULOQ was 214000 ng/mL for manual assay; LLOQ was 66.6 ng/mL and 215000 ng/mL for automated assay for SR-2 IgG antibody. 95% CI for GM value was calculated based on the t-distribution of the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 1, 29, 85, and 197
GMC of Anti-OspA Binding IgG Antibodies for SR-3 Antigen Measured by ELISA
Time Frame: Days 1, 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 14.5 ng/mL and ULOQ was 299000 ng/mL for manual assay; LLOQ was 62.5 ng/mL and 296000 ng/mL for automated assay for SR-3 IgG antibody. 95% CI for GM value was calculated based on the t-distribution of the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 1, 29, 85 and 197
GMC of Anti-OspA Binding IgG Antibodies for SR-4 Antigen Measured by ELISA
Time Frame: Days 1, 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 32.6 ng/mL and ULOQ was 292000 ng/mL for manual assay; LLOQ was 59.7 ng/mL and 264000 ng/mL for automated assay for SR-4 IgG antibody. 95% CI for GM value was calculated based on the t-distribution of the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 1, 29, 85 and 197
GMC of Anti-OspA Binding IgG Antibodies for SR-5 Antigen Measured by ELISA
Time Frame: Days 1, 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 45.5 ng/mL and ULOQ was 298000 ng/mL for manual assay; LLOQ was 84.2 ng/mL and 319000 ng/mL for automated assay for SR-5 IgG antibody. 95% CI for GM value was calculated based on the t-distribution of the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 1, 29, 85 and 197
GMC of Anti-OspA Binding IgG Antibodies for SR-6 Antigen Measured by ELISA
Time Frame: Days 1, 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 18.1 ng/mL and ULOQ was 203000 ng/mL for manual assay; LLOQ was 68.7 ng/mL and 248000 ng/mL for automated assay for SR-6 IgG antibody. 95% CI for GM value was calculated based on the t-distribution of the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 1, 29, 85 and 197
GMC of Anti-OspA Binding IgG Antibodies for SR-7 Antigen Measured by ELISA
Time Frame: Days 1, 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 13 ng/mL and ULOQ was 197000 ng/mL for manual assay; LLOQ was 78.9 ng/mL and 174000 ng/mL for automated assay for SR-7 IgG antibody. 95% CI for GM value was calculated based on the t-distribution of the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 1, 29, 85 and 197
Geometric Mean Fold Rise (GMFR) of Anti-OspA Binding IgG Antibody Concentration for SR-1 Antigen
Time Frame: Days 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 41.4 ng/mL and ULOQ was 428000 ng/mL for manual assay; LLOQ was 47.6 ng/mL and 583000 ng/mL for automated assay for SR-1 IgG antibody. 95% CI for GMFR value was calculated based on the t-distribution of the difference in the log-transformed values, then back transformed to the original scale for presentation.
Days 29, 85 and 197
GMFR of Anti-OspA Binding IgG Antibody Concentration for SR-2 Antigen
Time Frame: Days 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 30 ng/mL and ULOQ was 214000 ng/mL for manual assay; LLOQ was 66.6 ng/mL and 215000 ng/mL for automated assay for SR-2 IgG antibody. 95% CI for GMFR value was calculated based on the t-distribution of the difference in the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 29, 85 and 197
GMFR of Anti-OspA Binding IgG Antibody Concentration for SR-3 Antigen
Time Frame: Days 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 14.5 ng/mL and ULOQ was 299000 ng/mL for manual assay; LLOQ was 62.5 ng/mL and 296000 ng/mL for automated assay for SR-3 IgG antibody. 95% CI for GMFR value was calculated based on the t-distribution of the difference in the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 29, 85 and 197
GMFR of Anti-OspA Binding IgG Antibody Concentration for SR-4 Antigen
Time Frame: Days 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 32.6 ng/mL and ULOQ was 292000 ng/mL for manual assay; LLOQ was 59.7 ng/mL and 264000 ng/mL for automated assay for SR-4 IgG antibody. 95% CI for GMFR value was calculated based on the t-distribution of the difference in the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 29, 85 and 197
GMFR of Anti-OspA Binding IgG Antibody Concentration for SR-5 Antigen
Time Frame: Days 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 45.5 ng/mL and ULOQ was 298000 ng/mL for manual assay; LLOQ was 84.2 ng/mL and 319000 ng/mL for automated assay for SR-5 IgG antibody. 95% CI for GMFR value was calculated based on the t-distribution of the difference in the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 29, 85 and 197
GMFR of Anti-OspA Binding IgG Antibody Concentration for SR-6 Antigen
Time Frame: Days 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 18.1 ng/mL and ULOQ was 203000 ng/mL for manual assay; LLOQ was 68.7 ng/mL and 248000 ng/mL for automated assay for SR-6 IgG antibody. 95% CI for GMFR value was calculated based on the t-distribution of the difference in the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 29, 85 and 197
GMFR of Anti-OspA Binding IgG Antibody Concentration for SR-7 Antigen
Time Frame: Days 29, 85 and 197
Antibody values reported as below LLOQ were replaced by 0.5*LLOQ. Values reported greater than ULOQ were replaced by the ULOQ. LLOQ was 13 ng/mL and ULOQ was 197000 ng/mL for manual assay; LLOQ was 78.9 ng/mL and 174000 ng/mL for automated assay for SR-7 IgG antibody. 95% CI for GMFR value was calculated based on the t-distribution of the difference in the log-transformed values, then back transformed to the original scale for presentation. Since mRNA-1982 was designed to elicit antibodies against SR-1 antigen only, the data for this outcome measure has been reported for mRNA-1975 and placebo arms only.
Days 29, 85 and 197

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of Deaths Related to Study Drug
Time Frame: Day 1 up to Month 18
A death that occurred during the study or that came to the attention of the investigator during the study was reported to the Sponsor, whether or not it was considered related to study drug. The investigator assessed causality (that is, whether there is a reasonable possibility that the study drug caused the death). The relationship was characterized using the following classifications: Not related: There was not a reasonable possibility of a relationship to the study drug. The temporal sequence of the death relative to administration of the study drug was not reasonable AND/OR the death was more likely explained by a cause other than the study drug. Related: There was a reasonable possibility of a relationship to the study drug. There was evidence of exposure to the study drug. The temporal sequence of the death relative to the administration of the study drug was reasonable. The death was more likely explained by the study drug than by another cause.
Day 1 up to Month 18

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
ModernaTX, Inc.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 26, 2023

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 30, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 30, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 26, 2023

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 26, 2023

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 3, 2023

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 30, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 6, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • mRNA-1975/1982-P101

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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