Safety, Reactogenicity, and Immunogenicity of Cytomegalovirus Vaccines mRNA-1647 and mRNA-1443 in Healthy Adults

January 13, 2021 updated by: ModernaTX, Inc.

A Phase 1, Randomized, Observer-Blind, Placebo-Controlled, Dose-Ranging Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of Cytomegalovirus Vaccines mRNA-1647 and mRNA-1443 When Administered to Healthy Adults

This clinical study will assess the safety, reactogenicity and immunogenicity of mRNA-1647 and mRNA-1443 cytomegalovirus vaccines in healthy adults

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.
181

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 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 Locations

  • United States
    • Florida
      • Hollywood, Florida, United States, 33024
        • Research Centers of America
    • Idaho
      • Meridian, Idaho, United States, 83642
        • Advanced Clinical Research
    • Illinois
      • Peoria, Illinois, United States, 61614
        • Optimal Research
    • Kansas
      • Lenexa, Kansas, United States, 66219
        • Johnson County Clinical Trials

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

18 years to 49 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Agrees to comply with the study procedures and provides written informed consent
  • 18 to 49 years of age
  • Body mass index between 18 and 35 kg/m2
  • In good health based on medical history, physical examination, vital sign measurements and laboratory safety tests performed prior to initial study vaccination
  • Negative urine pregnancy test at the Screening visit and the day of each vaccination for females of childbearing potential
  • Female subjects must either be of non-childbearing potential or use acceptable methods of contraception from at least 30 days prior to enrollment and through 3 months following last vaccination
  • Male subjects must agree to practice adequate contraception for 30 days prior to the first vaccination and through 3 months following the last vaccination
  • Willing to comply with the requirements of the protocol (eg, complete Diary Cards, return for follow-up visits, be available for safety phone calls)

Exclusion Criteria:

  • Any ongoing, symptomatic acute or chronic illness requiring medical or surgical care
  • A history of malignancy in the last 10 years
  • If female and of childbearing potential, is pregnant or lactating, has not adhered to an adequate contraception method from at least 30 days before study entry, or does not plan to do so for at least 3 months after the last vaccination.
  • Abnormal screening safety laboratory test results including liver enzyme tests
  • Administration of any investigational or non-registered product (drug or vaccine) other than the study vaccine within 30 days preceding the first dose of study vaccine or has plans for administration during the study period
  • Prior administration of investigational agent using lipid nanoparticle formulations
  • A positive test result for hepatitis B surface antigen, hepatitis C virus antibody, or human immunodeficiency virus types 1 or 2 antibodies
  • A positive test result for drugs of abuse
  • Chronic administration of potentially hepatotoxic drugs or have other medical conditions that affect the liver (eg, alcohol abuse)
  • A history of idiopathic urticaria
  • Plans for administration or has been administered a vaccine within the period from 30 days before through 30 days after each study vaccination, with the exception of any licensed influenza vaccine administered ≥15 days before or after any study vaccination
  • Any chronic administration of an immunosuppressant or other immune modifying drug
  • Prior administration of immunoglobulins and/or any blood products within the 3 months before the first study vaccine or has plans for administration during the study period
  • Any known or suspected immune-mediated disease or immunosuppressive condition as determined by medical history and/or physical examination
  • A history of hypersensitivity or serious reactions to previous vaccinations
  • Any bleeding disorder considered a contraindication to IM injection or blood draw
  • Any acute illness or fever at screening
  • Any condition that, in the opinion of the investigator, would pose a health risk to the subject if enrolled or could interfere with evaluation of the study drug or interpretation of study results
  • Dose-escalation phase only, is seropositive for CMV at the Screening visit
  • Donation of blood or blood products > 450 mL within 30 days of dosing.
  • Is an immediate family member or household member of study personnel
  • A history of seizure disorder for which anticonvulsants are currently prescribed

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: Prevention
  • 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.
Placebo Comparator: Placebo
Other: Placebo
Saline
Experimental: mRNA-1647
Biological: mRNA-1647
Escalating dose levels
Experimental: mRNA-1443
Biological: mRNA-1443
Escalating dose levels

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
Time Frame
Frequency of solicited AEs (local and systemic reactogenicity events)
Time Frame: 7 days following each dose administration
7 days following each dose administration
Frequency of unsolicited adverse events
Time Frame: 29 days following each dose administration
29 days following each dose administration
Frequency of medically-attended AEs, adverse events of special interest (AESI), and serious adverse events (SAE)
Time Frame: one year following the last dose administration
one year following the last dose administration
Frequency of clinical laboratory adverse events
Time Frame: 1 month following the last dose administration
1 month following the last dose administration

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
Time Frame
Titers of anti-CMV neutralizing antibodies against epithelial cell infection measured by neutralization assay in comparison with baseline sample
Time Frame: 6 months following the last dose administration
6 months following the last dose administration
Titers of anti-CMV neutralizing antibodies against fibroblast cell infection measured by neutralization assay in comparison with baseline sample
Time Frame: 6 months following the last dose administration
6 months following the last dose administration
Titers of vaccine antigen-specific IgG antibodies as measured by ELISA assay in comparison with baseline sample
Time Frame: 6 months following the last dose administration
6 months following the last dose administration
Frequencies of vaccine antigen-specific CD4 and CD8 T cells secreting interferon gamma as determined by ELISPOT
Time Frame: 6 months following the last dose administration
6 months following the last dose administration

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.

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.
November 13, 2017

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.
October 28, 2020

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.
October 28, 2020

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).
December 6, 2017

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.
December 18, 2017

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.
December 22, 2017

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.
January 15, 2021

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.
January 13, 2021

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.
January 1, 2021

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-1647/mRNA-1443-P101

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

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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