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SafetyPhase 4NCT03969641

Safety of RIV4 Versus IIV4 in Pregnant Women

A Phase 4 study testing Quadrivalent Recombinant Influenza Vaccine and Quadrivalent Inactivated Influenza Vaccine in people with Safety and Adverse Event Following Immunisation, run by Duke University at 3 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a prospective, randomized clinical trial. During the study, pregnant women will be randomized (1:1) to receive RIV4 or IIV4. Vaccines will be administered by licensed providers. Prior influenza vaccine history will be verified by medical record review when possible. Read more about this study

Who is it for?
Ages 18 years and older, women onlyHealthy volunteers can take part
What is being tested?
Quadrivalent Recombinant Influenza Vaccine and Quadrivalent Inactivated Influenza Vaccine
Type of treatment
Vaccines
Could I receive a placebo?
No, everyone receives an active treatment
How many people
384 participants
Where
3 sitesUnited States
Study dates
5 Sep 2019to 29 Sep 2021
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Women only
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Pregnant, as determined by medical history
  • Age ≥ 18 years of age at enrollment
  • Intention of receiving influenza vaccine based on ACIP-CDC guidelines
  • Willing to provide written informed consent prior to initiation of any study procedures
  • Gestational age at vaccination ≤ 34 weeks 0 days based on reconciliation of last menstrual period and ultrasound dating. Estimated due date (EDD) and Gestational Age (GA-EDD) will be based on reconciliation of "sure" first day of the last menstrual period (LMP) and earliest dating ultrasound. If the LMP is uncertain, then the earliest dating ultrasound will be used to determine EDD and GA. If the ultrasound derived-EDD is in agreement with sure-LMP derived EDD, then the LMP-derived EDD is used to determine GA. If the ultrasound derived EDD is not in agreement with the LMP-derived EDD, the ultrasound-derived EDD is used to determine GA.
  • English or Spanish literate
  • Intention of being available for entire study period and complete all relevant study procedures, including follow-up phone calls and collection of delivery information.

Who cannot join

  • Influenza vaccine receipt during 2019-2020 or 2020-2021 influenza season prior to study enrollment.
  • Participation in this study in 2019-2020 influenza season
  • Any condition that may interfere with assessment of local injection site reactions, e.g. obscuring tattoos
  • Known or suspected immunosuppression as a result of an underlying illness or treatment
  • Use of anti-cancer chemotherapy or radiation therapy within the preceding 36 months
  • Use of oral or parenteral corticosteroids (≥ 20mg/day prednisone equivalent) or high-dose inhaled glucocorticoid for ≥ 14 consecutive days within the preceding 30 days
Show all 18Show fewer
  • Has an active neoplastic disease (excluding non-melanoma skin cancer), a history of any hematologic malignancy, current bleeding disorder, or taking anticoagulants (a daily aspirin is acceptable)
  • Has a history of receiving immunoglobulin or other blood product (with exception of Rh immunoglobulin) within the 3 months prior to study vaccination.
  • History of febrile illness (> 100.4°F or 38°C) within the past 24 hours prior to study vaccination
  • Contraindication to IIV or RIV receipt including history of severe allergic reaction after a previous dose of any influenza vaccine; or to a vaccine component, including egg protein
  • History of Guillain-Barré syndrome within 6 weeks of a prior dose of any influenza vaccine
  • Receipt of any licensed vaccine within 7 days prior to study vaccination or intention of receiving any vaccines during 8-day post-vaccination period
  • Receipt of live vaccine during current pregnancy
  • Signs or symptoms of active preterm labor, defined as regular uterine contractions with cervical change (dilation/effacement)
  • Known multi-fetal gestation or fetal congenital anomaly, e.g. genetic abnormality or major congenital malformation based on antenatal ultrasound
  • Anyone who is already enrolled or plans to enroll in another randomized clinical trial with any drug, vaccine or medical device. Co-enrollment in observational or behavioral intervention studies are allowed at any time
  • Any condition which, in the opinion of the investigators, may pose a health risk to the participant or interfere with the evaluation of the study objectives.
  • Anyone who is a relative of any research study personnel or is an employee supervised by study staff

Trial locations and contacts

3 sites in 1 country.

United States3 sites
  • Boston Medical Center

    Boston, Massachusetts, 02118

  • Cincinnati Children's Hospital Medical Center

    Cincinnati, Ohio, 45229

  • Duke University Medical Center

    Durham, North Carolina, 27705

Other trials in United States

About this study

Official title: A Prospective, Randomized, Clinical Trial to Compare Adverse Birth Outcomes in Pregnant Women Receiving Quadrivalent Recombinant Influenza Vaccine (RIV4) Versus Quadrivalent Inactivated Influenza Vaccine (IIV4)

This is a prospective, randomized clinical trial. During the study, pregnant women will be randomized (1:1) to receive RIV4 or IIV4. Vaccines will be administered by licensed providers.

Prior influenza vaccine history will be verified by medical record review when possible.

Read more

Injection-site (local) and systemic reaction data will be assessed on vaccination day and during the 8 days following vaccination using either identical web-based or paper diaries, depending on study participant preference.

Maternal serum samples will be collected for antibody titers relevant to Influenza at time points that include: prior to vaccination and ~29 days post vaccination. When feasible, maternal blood at delivery and cord blood serum will be analyzed for the same antibody titers.

Pregnant women will be followed through delivery with comprehensive obstetric and neonatal outcomes obtained from medical record review for 90 days of life.

Being tested
Quadrivalent Recombinant Influenza Vaccine, Quadrivalent Inactivated Influenza Vaccine
Keywords
Vaccination, Safety, Birth outcomes, Flublok, Pregnant, Influenza
Medical subject headings
Influenza, Human

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Quadrivalent Recombinant Influenza VaccineBiological

    Also called Flublok Quadrivalent

    The first recombinant inactivated influenza vaccine (RIV) using an insect baculovirus expression system and recombinant DNA technology

  • Quadrivalent Inactivated Influenza VaccineBiological

    Also called Flulaval

    Standard inactivated influenza vaccine (IIV) manufactured involving the use of embryonated hen eggs.

Study groups in NCT03969641
Study groupRoleWhat they receive
RIV4ExperimentalThe first recombinant inactivated influenza vaccine (RIV) using an insect baculovirus expression system and recombinant DNA technology
Receives: Biological: Quadrivalent Recombinant Influenza Vaccine
IIV4Active comparatorStandard inactivated influenza vaccine (IIV) manufactured involving the use of embryonated hen eggs.
Receives: Biological: Quadrivalent Inactivated Influenza Vaccine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Pregnant Women Vaccinated With RIV4 Versus IIV4 With Adverse Birth Outcomes

    As measured by the number of women experiencing one of the following:

    • Adverse birth outcome is a composite of occurrence of at least one of the following: preterm birth, spontaneous abortion, fetal death, or neonatal death.
    • Preterm birth- born alive at less than 37 weeks and 0 days gestation
    • Spontaneous abortion (SAB)- pregnancy loss prior to 20 weeks 0 days
    • Fetal death- intrauterine death of fetus at or after 20 weeks 0 days
    • Neonatal death- infant death within first 28 days of life

    Measured: Birth outcomes were monitored within postnatal day 28.

Secondary outcomes (4)
  1. Number of Pregnant Women With Preterm Birth After RIV4 Versus IIV4 Vaccination

    Preterm birth is defined as born alive at less than 37 weeks and 0 days gestation.

    Measured: Birth outcomes were monitored through 36 weeks 6 days gestation.

  2. Number of Pregnant Women With Fetal or Neonatal Death After RIV4 Versus IIV4 Vaccination

    Fetal death is defined as intrauterine death of fetus at or after 20 weeks 0 days. Neonatal death is defined as infant death within first 28 days of life.

    Measured: Birth outcomes were monitored through postnatal day 28.

  3. Number of Pregnant Women With Spontaneous Abortion After RIV4 Versus IIV4 Vaccination

    Spontaneous abortion (SAB) is defined as pregnancy loss prior to 20 weeks 0 days.

    Measured: Birth outcomes were monitored through 19 weeks 6 days gestation.

  4. Number of Pregnant Women With Moderate/Severe Solicited Reactogenicity Events (Local and Systemic) Within 8 Days After Vaccination With RIV4 Versus IIV4

    Reactogenicity events include Injection Site Pain, Injection Site Redness, Injection Site Tenderness, Injection Site Swelling, Nausea, Vomiting, Diarrhea, Abdominal Pain, Headache, Chills/Shivering, Body Rash, Fever, Malaise (Fatigue), Myalgia (Body Aches), and Joint Pain.

    Measured: Reactogenicity was measured for 8 days post-vaccination.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted31 May 2019
  2. Study start5 Sep 2019
  3. Primary completion29 Sep 2021
  4. Study completion29 Sep 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
384 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03969641
Sponsor's protocol ID
Pro00101707
Status last verified
Jan 2023
First submitted
28 May 2019
Last updated
11 Jan 2023
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Quadrivalent Recombinant Influenza Vaccine and Quadrivalent Inactivated Influenza Vaccine in people with Safety and Adverse Event Following Immunisation, run by Duke University at 3 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 18 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 11 Jan 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 3 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 27 Dec 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Pregnant Women Vaccinated With RIV4 Versus IIV4 With Adverse Birth Outcomes (time frame: Birth outcomes were monitored within postnatal day 28.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 Jan 2023.

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