Safety, Tolerability, and Immunogenicity of Zika Vaccine mRNA-1893 in Healthy Flavivirus Seropositive and Seronegative Adults

A Phase 1, Randomized, Observer-Blind, Placebo-Controlled, Dose-Ranging Study to Evaluate the Safety, Tolerability, and Immunogenicity of Zika Vaccine mRNA-1893 in Healthy Flavivirus Seropositive and Seronegative Adults

This clinical study will evaluate the safety, tolerability and reactogenicity of mRNA-1893 Zika vaccines in flavivirus seronegative and flavivirus seropositive participants

Study Overview

• Status: Completed
• Conditions: Zika Virus
• Intervention / Treatment: Biological: mRNA-1893; Other: Placebo

• Study Type: Interventional
• Enrollment (Actual): 120
• Phase: Phase 1

Contacts and Locations

Study Locations

• Puerto Rico
  • Ponce, Puerto Rico, 00716
    • Ponce School of Medicine - CAIMED Center
• United States
  • Nebraska
    • Omaha, Nebraska, United States, 68134
      • Meridan Clinical Research
  • Texas
    • Austin, Texas, United States, 78705
      • Benchmark Research
    • Fort Worth, Texas, United States, 76135
      • Benchmark Research

Participation Criteria

Eligibility Criteria

• 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
• In the opinion of the investigator, can and will comply with the requirements of the protocol (e.g., complete diary cards, return for follow-up visits, be available for safety telephone calls).
• Is in good general health, as determined by medical history, clinical laboratory assessments, vital sign measurements, and physical examination at screening.
• Negative urine pregnancy test at the Screening visit and at the day of each vaccination for females of childbearing potential.
• Male participants must agree to practice adequate contraception from the time of the first vaccination and through 3 months following the last vaccination.
• For flavivirus-seropositive group, has positive flavivirus test results (including dengue, West Nile, and Zika) as determined by ELISA or other commercially available serological assay.
• For flavivirus-seronegative group, has negative flavivirus test results (including dengue, West Nile, and Zika) as determined by ELISA or other commercially available serological assay.

Exclusion Criteria:

• Has any acute or chronic, Clinically Significant disease in the opinion of the investigator.
• Has received a vaccine for dengue, Japanese encephalitis, tick-borne encephalitis, West Nile, Yellow Fever, or Zika.
• Has a neurologic disorder
• Has a body mass index that is ≤ 18 or ≥ 35 kg/m2.
• Has elevated liver function tests
• Has clinical laboratory test results (hematology, serum chemistry, or coagulation) with a toxicity score of Grade ≥ 1 at Screening.
• Has a bleeding disorder that would contraindicate IM injections or phlebotomy.
• Reports a diagnosis of congenital or acquired immunodeficiency (including HIV infection), or autoimmune disease.
• Has a history of hypersensitivity or severe reactions to previous vaccinations or any component of the study vaccine.
• Has a history of idiopathic urticaria.
• Reports a previous diagnosis of hematologic malignancy or pre-malignancy or a diagnosis of any other malignancy within the previous 10 years (excluding nonmelanoma skin cancer).
• Has a medical, psychiatric, or occupational condition that, in the opinion of the investigator, might pose an additional risk to the participant due to participation in the study or would interfere with the evaluation of the study vaccines or the interpretation of study results.
• Is acutely ill or febrile on the day of screening (Day 0) or randomization (Day 1).
• Has a history of inflammatory arthritis.
• Has a history of febrile disease with arthritis or arthralgia within 2 weeks of administration of any study vaccine.
• Has received an investigational or nonregistered product (drug or vaccine) within 30 days before the first dose of study vaccine or has plans for administration during the study period.
• Has received or is scheduled to receive an inactivated vaccine within the period from 14 days before, or through 14 days after, administration of any study vaccination.
• Has received or is scheduled to receive a live virus vaccine administered within the period from 28 days before, or through 28 days after, any dose of study vaccine.
• Has received chronic administration (defined as > 14 total days) of immunosuppressants or other immune-modifying drugs within 6 months before the first study vaccine dose.
• Has received immunoglobulins and/or blood products within the 3 months before the first study vaccine dose or has plans for administration during the study period.
• Has a positive test result at the Screening Visit for hepatitis B surface antigen, hepatitis C virus antibody, or HIV type 1 or 2 antibodies.
• Has donated > 450 mL of whole blood or blood products within 30 days of enrollment or plans to do so during the study period.
• Is an immediate family member or household member of study personnel.
• Previously participated in an investigational study involving LNPs.
• Has a positive urine drug screen result at Screening for any of the following nonprescription drugs of abuse: amphetamines, benzodiazepines, cocaine, methadone, opiates, and phencyclidine.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Sequential Assignment
• Masking: Triple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Placebo Comparator: Placebo; 0.9% sodium chloride	Other: Placebo; 0.9% sodium chloride
Experimental: mRNA-1893	Biological: mRNA-1893; Zika vaccine

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Frequency and grade of each solicited local and systemic reactogenicity adverse event (AE)	7-day follow-up period after each vaccination
Frequency and grade of any unsolicited AEs	28-day follow-up period after each vaccination
Frequency of any medically attended adverse event (MAAE), serious adverse event (SAE), and adverse event of special interest (AESI)	Day 1 to the end of study (EOS) Visit at Month 13

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Geometric mean titer (GMT) of serum neutralizing antibodies (nAb) against zika virus (ZIKV) as measured by Plaque Reduction Neutralization Test (PRNT)		Day 1, Day 29, Day 57, Month 7, and Month 13
GMT of nAb in initially seronegative participants against ZIKV as measured by PRNT		Day 1, Day 29, Day 57, Month 7, and Month 13
GMT of nAb in initially seropositive participants against ZIKV as measured by PRNT		Day 1, Day 29, Day 57, Month 7, and Month 13
Percentage of participants who seroconverted	A seroconversion is defined as a change of PRNT from below the LOQ to a PRNT equal to or above 1:10, or a multiplication by at least 4 in subjects with pre-existing PRNT titers	Day 1 (baseline) to Day 29, from Day 1 to Day 57, from Day 1 to Month 7, and from Day 1 to Month 13
Proportion of initially seronegative participants with a seroresponse as measured by PRNT		Day 29, Day 57, Month 7, and Month 13
Proportion of initially seropositive participants with a 2-fold or 4-fold increase in nAb titers as compared with baseline as measured by PRNT		Day 29, Day 57, Month 7, and Month 13

Collaborators and Investigators

• Sponsor: ModernaTX, Inc.
• Collaborators: Biomedical Advanced Research and Development Authority

Study record dates

Study Major Dates

• Study Start (Actual): July 30, 2019
• Primary Completion (Actual): March 22, 2021
• Study Completion (Actual): March 22, 2021

Study Registration Dates

• First Submitted: August 20, 2019
• First Submitted That Met QC Criteria: August 20, 2019
• First Posted (Actual): August 22, 2019

Study Record Updates

• Last Update Posted (Actual): April 22, 2021
• Last Update Submitted That Met QC Criteria: April 20, 2021
• Last Verified: April 1, 2021

More Information

Terms related to this study

• Keywords: Moderna; mRNA-1893; zika vaccine
• Additional Relevant MeSH Terms: RNA Virus Infections; Virus Diseases; Infections; Arbovirus Infections; Vector Borne Diseases; Flavivirus Infections; Flaviviridae Infections; Zika Virus Infection
• Other Study ID Numbers: mRNA-1893-P101; BARDA HHS010020160029C (Other Grant/Funding Number: Biomedical Advanced Research & Development Authority (BARDA))

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