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InfluenzaPhase 1NCT03581903

A Study in Healthy Adults to Assess Priming With Antigenically Mismatched Live Attenuated A/H7N3 Influenza Virus Vaccine Followed by Inactivated A/H7N9 Influenza Virus Vaccine

A Phase 1 study testing H7N3 pLAIV and H7N9 pIIV in people with Influenza, run by National Institute of Allergy and Infectious Diseases (NIAID) at 1 site 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

The purpose of this study is to assess priming with antigenically mismatched live attenuated A/H7N3 influenza virus vaccine followed by inactivated A/H7N9 influenza virus vaccine in healthy adults. Read more about this study

Who is it for?
Ages 18 to 49 yearsHealthy volunteers can take part
Conditions the study is for
Influenza
What is being tested?
H7N3 pLAIV and H7N9 pIIV
Could I receive a placebo?
No, everyone receives an active treatment
How many people
20 participants
Where
1 siteUnited States
Study dates
19 Sep 2017to 6 Feb 2019
Phase
Phase 1
Are there results?
None posted in the registry

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 to 49 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Adult males and non-pregnant, non-breastfeeding females between 18 years and 49 years of age, inclusive. Children will not be recruited or enrolled in this study because they are not in the apparent risk group, for safety considerations, and because of the need for isolation.
  • Are in good health, as determined by medical history and targeted physical examination to ensure any existing medical diagnoses or conditions (except those exclusionary) are stable. More information on this criterion can be found in the protocol.
  • Agree to storage of blood specimens for future research.
  • Available for the duration of the trial. Subjects must be willing and able to remain within the Isolation Unit for the specified duration of confinement.
  • Provide written informed consent prior to initiation of any study procedures, including future use of specimens.
  • Female subjects of child-bearing potential must agree to use effective birth control methods for the duration of the study (for example, pharmacologic contraceptives including oral, parenteral, and transcutaneous delivery; condoms with spermicide; diaphragm with spermicide; intrauterine device; abstinence from heterosexual intercourse, surgical sterilization). All female subjects will be considered being of child bearing potential except those who have undergone hysterectomy or tubal ligation and those in whom menopause occurred at least 1 year prior to the study.
  • Agrees not to participate in another clinical trial with an investigational product for the entire duration of the study.
  • Female subjects of childbearing potential must have a negative urine and serum pregnancy test within 24 hours (urine) to 48 hours (serum) prior to study vaccination.

Who cannot join

  • Pregnancy as determined by a positive human choriogonadotropin (beta-HCG) test.
  • Currently breastfeeding or planning to breastfeed or become pregnant at some point during the duration of the study.
  • Evidence of clinically significant neurologic, cardiac, pulmonary, hepatic, rheumatologic, autoimmune, or renal disease by history, physical examination, electrocardiogram (EKG) and/or laboratory studies including urine testing. Alanine aminotransferase (ALT) levels greater than 2 times the upper normal limit will be exclusionary at baseline, prior to vaccination.
  • Any current illness requiring daily medication other than the following: vitamins, birth control, anti-hypertensive medication, antihistamines, anti-depressant medication, cholesterol-lowering medication, treatment for gastroesophageal reflux disease, and thyroid medication unless approved by the principal investigator (PI).
  • Behavioral or cognitive impairment or psychiatric disease that in the opinion of the investigator affects the ability of the subject to understand and cooperate with the study protocol.
  • Previous enrollment in an H7 vaccine trial or in any study of an avian influenza vaccine.
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  • Seropositive to the H7N3 or H7N9 influenza A virus (serum HAI titer greater than 1:8).
  • Positive urine drug toxicology test indicating narcotic use/dependency.
  • Have medical, occupational, or family problems as a result of alcohol or illicit drug use during the past 12 months.
  • Other condition that in the opinion of the investigator would jeopardize the safety or rights of a subject participating in the trial or would render the subject unable to comply with the protocol.
  • Have a history of severe reactions following previous immunization with licensed or unlicensed influenza virus vaccines.
  • Have known hypersensitivity or allergy to eggs, egg or chicken protein, or other components of the study vaccine.
  • Allergy to oseltamivir as determined by subject report.
  • Current diagnosis of asthma or reactive airway disease (within the past 2 years).
  • History of Guillain-Barré Syndrome.
  • Positive enzyme-linked immunosorbent assay (ELISA) and confirmatory Western blot tests for human immunodeficiency virus-1 (HIV-1).
  • Positive ELISA and confirmatory test (e.g., recombinant immunoblot assay) for hepatitis C virus (HCV).
  • Positive hepatitis B virus surface antigen (HBsAg) by ELISA.
  • Known immunodeficiency syndrome.
  • Use of corticosteroids (excluding topical preparations) or immunosuppressive drugs within 30 days prior to vaccination.
  • Receipt of a live vaccine within 4 weeks or a killed vaccine within 2 weeks prior to study vaccination.
  • History of asplenia
  • Use of anticancer chemotherapy or radiation therapy (cytotoxic) within 36 months prior to vaccination.
  • Have known active neoplastic disease or a history of any hematologic malignancy.
  • Receipt of blood or blood-derived products (including immunoglobulin) within 6 months prior to study vaccination.
  • Current smoker unwilling to stop smoking for the duration of the inpatient stay.
  • A current smoker includes anyone stating they currently smoke or use any amount of a tobacco product, including electronic cigarettes.
  • After admission to the unit, nicotine patches will be provided to current smokers who request them for the inpatient portion of the study.
  • Travel to the Southern Hemisphere within 14 days prior to study vaccination.
  • Travel on a cruise ship within 14 days prior to study vaccination.
  • Receipt of another investigational vaccine or drug within 30 days prior to study vaccination.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Rochester Medical Center Vaccine Research Unit (Outpatient)

    Rochester, New York, 14642

Other trials in United States

About this study

Official title: A Phase I Study in Healthy Adults to Assess Priming With Antigenically Mismatched Live Attenuated A/H7N3 Influenza Virus Vaccine Followed by Inactivated A/H7N9 Influenza Virus Vaccine

The purpose of this study is to assess priming with antigenically mismatched live attenuated A/H7N3 influenza virus vaccine followed by inactivated A/H7N9 influenza virus vaccine in healthy adults.

Read the detailed description

This study will assess priming with antigenically mismatched live attenuated A/H7N3 influenza virus vaccine (H7N3 pLAIV) followed by inactivated A/H7N9 influenza virus vaccine (H7N9 pIIV) in healthy adults.

Participants will receive a dose of H7N3 pLAIV on Days 0 and 28, followed by a single dose of H7N9 pIIV on Day 84.

On Days -2 and 26, participants will be admitted to an inpatient clinic. They will receive the H7N3 pLAIV vaccine on Days 0 and 28. They will remain in the clinic for 9 days after receiving the vaccine and until they are no longer shedding vaccine virus. An additional study visit will occur on Day 56.

On Day 84, participants will receive the H7N9 pIIV vaccine. Additional study visits will occur on Days 87, 91, 98, 112, 140, and 180. Study visits may include physical examinations, nasal washes, and blood and urine collection. Participants will be contacted by phone on Day 264 for follow-up health monitoring.

Conditions
Influenza
Being tested
H7N3 pLAIV, H7N9 pIIV
Medical subject headings
Influenza, Human

What participants receive

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

  • H7N3 pLAIVBiological

    Also called Live attenuated A/H7N3 influenza virus vaccine

    Approximately 10^7.0 fluorescent focus units (FFUs) administered intranasally by an Accuspray device

  • H7N9 pIIVBiological

    Also called Inactivated A/H7N9 influenza virus vaccine

    30 micrograms administered by intramuscular (IM) injection

Study groups in NCT03581903
Study groupRoleWhat they receive
H7N3 pLAIV + H7N9 pIIVExperimentalParticipants will receive H7N3 pLAIV on Days 0 and 28, followed by H7N9 pIIV on Day 84.
Receives: Biological: H7N3 pLAIV; Biological: H7N9 pIIV

What is being measured

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

  1. Hemagglutination-inhibition (HAI) antibody response to H7N9 virus following administration of pIIV

    Defined as 4-fold or greater response to a titer of 1:40 or above with 95% confidence intervals for both antigens

    Measured: Measured through Day 28

Secondary outcomes (7)
  1. Frequency of reactogenicity events following each dose of vaccine

    Reactogenicity events will be collected and assessed for each individual subject, taking the pattern of viral shedding into account.

    Measured: Measured through Day 180

  2. Severity of reactogenicity events following each dose of vaccine

    Assessed according to the Reactogenicity Event Severity Grading System provided in the protocol

    Measured: Measured through Day 180

  3. Frequency of adverse events following each dose of vaccine

    All adverse events will be recorded and relationship to study product will be assessed.

    Measured: Measured through Day 180

  4. Severity of adverse events following each dose of vaccine

    Assessed according to the Adverse Event Severity Grading System provided in the study protocol

    Measured: Measured through Day 180

  5. Frequency of vaccine viral shedding after each dose

    Determined by rtRT-PCR and culture at each day tested after inoculation

    Measured: Measured through Day 180

  6. Serum HAI and neutralizing antibody response following 1 or 2 doses of pLAIV

    Response rates defined as 4-fold or greater response to a titer of 1:40 or above with 95% confidence intervals for both antigens

    Measured: Measured through Day 56

  7. Neutralizing and HAI responses after pIIV boost against antigenic variants of H7 virus, including H7N7, H7N3, and H7N9 North American and Eurasian lineage viruses

    Response rates defined as 4-fold or greater response to a titer of 1:40 or above with 95% confidence intervals for both antigens

    Measured: Measured through Day 28

Timeline

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

  1. First posted10 Jul 2018
  2. Study start19 Sep 2017
  3. Primary completion14 Sep 2018
  4. Study completion6 Feb 2019

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 1
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
20 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03581903
Sponsor's protocol ID
16-003
Status last verified
Mar 2019
First submitted
26 Jun 2018
Last updated
25 Mar 2019
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing H7N3 pLAIV and H7N9 pIIV in people with Influenza, run by National Institute of Allergy and Infectious Diseases (NIAID) at 1 site 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 8 inclusion and 31 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 25 Mar 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

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

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Hemagglutination-inhibition (HAI) antibody response to H7N9 virus following administration of pIIV (time frame: Measured through 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 25 Mar 2019.

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