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AzTrials

Avian InfluenzaPhase 2NCT03738241

2017 A/H7N9 IIV Revaccination

A Phase 2 study testing A/H7N9, AS03 and Phosphate Buffered Saline (PBS) diluent in people with Avian Influenza and Influenza Immunisation, run by National Institute of Allergy and Infectious Diseases (NIAID) at 9 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 Phase II clinical trial in up to 420 males and non-pregnant females, 19 to 70 years of age, inclusive, who are in good health and meet all eligibility criteria. This clinical trial is designed to assess the safety, reactogenicity and immunogenicity of one dose of a monovalent inactivated split influenza 2017… Read more about this study

Who is it for?
Ages 19 to 70 yearsHealthy volunteers can take part
Conditions the study is for
Avian Influenza, Influenza Immunisation
What is being tested?
A/H7N9, AS03 and Phosphate Buffered Saline (PBS) diluent
Could I receive a placebo?
No, everyone receives an active treatment
How many people
304 participants
Where
9 sitesUnited States
Study dates
18 Dec 2018to 19 Jun 2020
Phase
Phase 2
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 19 to 70 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Subjects eligible to participate in this trial must meet all of the following inclusion criteria:
  • Provide written informed consent prior to initiation of any study procedures.
  • Are able to understand and comply with planned study procedures and be available for all study visits.
  • Must agree to the collection of venous blood per protocol.
  • Must agree to have residual specimens and samples/specimens collected during this trial specifically for the purpose of future research stored for future research use.
  • Are males or non-pregnant females, 19 to 70 years of age, inclusive.
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  • Are in good health* *As determined by medical history and physical examination to evaluate acute or currently ongoing chronic medical diagnoses or conditions, defined as those that have been present for at least 90 days, which would affect the assessment of the safety of subjects or the immunogenicity of study vaccinations. Chronic medical diagnoses or conditions should be stable for the last 60 days (no hospitalizations, emergency room or urgent care for condition and no adverse symptoms that need medical intervention such as medication change/supplemental oxygen). This includes no change in chronic prescription medication, dose or frequency as a result of deterioration of the chronic medical diagnosis or condition in the 60 days prior to enrollment. Any prescription change that is due to change of health care provider, insurance company, etc., or that is done for financial reasons, as long as in the same class of medication, will not be considered a deviation of this inclusion criterion. Any change in prescription medication due to improvement of a disease outcome, as determined by the site PI or appropriate sub-investigator, will not be considered a deviation of this inclusion criterion. Subjects may be on chronic or as needed (prn) medications if, in the opinion of the site PI or appropriate sub-investigator, they pose no additional risk to subject safety or assessment of reactogenicity and immunogenicity and do not indicate a worsening of medical diagnosis or condition. Similarly, medication changes subsequent to enrollment and study vaccination are acceptable provided there was no deterioration in the subject's chronic medical condition that necessitated a medication change, and there is no additional risk to the subject or interference with the evaluation of responses to study vaccination. Note: Topical, nasal and inhaled medications (except inhaled corticosteroids as outlined in the Subject Exclusion Criteria as well as herbals, vitamins and supplements are permitted.
  • Oral temperature is less than 100.0 degrees Fahrenheit.
  • Pulse is 47 to 100 beats per minute, inclusive.
  • Systolic blood pressure is 85 to 150 mmHg, inclusive.
  • Diastolic blood pressure is 55 to 95 mmHg, inclusive.
  • Erythrocyte Sedimentation Rate (ESR) is less than 30 mm per hour.
  • Women of childbearing potential must use an acceptable contraception method* from 30 days before study vaccination until 60 days after study vaccination.
  • Not sterilized via tubal ligation, bilateral oophorectomy, salpingectomy, hysterectomy, or successful Essure(R) placement (permanent, non-surgical, non-hormonal sterilization) with documented radiological confirmation test at least 90 days after the procedure, and still menstruating or <1 year has passed since the last menses if menopausal.
  • Includes non-male sexual relationships, abstinence from sexual intercourse with a male partner, monogamous relationship with vasectomized partner who has been vasectomized for 180 days or more prior to the subject receiving the study vaccination, barrier methods such as condoms or diaphragms/cervical cap with spermicide, effective intrauterine devices, NuvaRing(R), and licensed hormonal methods such as implants, injectables or oral contraceptives ("the pill").
  • Women of childbearing potential must have a negative urine or serum pregnancy test within 24 hours prior to study vaccination.
  • Received 1 or 2 doses of 2013 A/H7N9 IIV with or without AS03 or MF59 adjuvant in DMID Protocols 13-0032 or 13-0033, or are A/H7 IIV-naïve.

Who cannot join

  • Subjects eligible to participate in this trial must not meet any of the following exclusion criteria:
  • Have an acute illness*, as determined by the site PI or appropriate sub-investigator, within 72 hours prior to study vaccination.
  • An acute illness which is nearly resolved with only minor residual symptoms remaining is allowable if, in the opinion of the site PI or appropriate sub-investigator, the residual symptoms will not interfere with the ability to assess safety parameters as required by the protocol.
  • Have any medical disease or condition that, in the opinion of the site PI or appropriate sub-investigator, is a contraindication to study participation**.
  • Including acute or chronic medical disease or condition, defined as persisting for at least 90 days, that would place the subject at an unacceptable risk of injury, render the subject unable to meet the requirements of the protocol, or may interfere with the evaluation of responses or the subject's successful completion of this trial.
  • Have immunosuppression as a result of an underlying illness or treatment, a recent history or current use of immunosuppressive or immunomodulating disease therapy.
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  • Use of cytotoxic anticancer chemotherapy or radiation therapy within 3 years prior to study vaccination.
  • Have known active neoplastic disease or a history of any hematologic malignancy. Non-melanoma, treated, skin cancers are permitted.
  • Have known human immunodeficiency virus (HIV), hepatitis B or hepatitis C infection.
  • Have known hypersensitivity or allergy to eggs, egg or chicken protein, squalene-based adjuvants, or other components of the study vaccine.
  • Have a history of severe reactions following previous immunization with licensed or unlicensed influenza vaccines.
  • Have a personal or family history of narcolepsy.
  • Have a history of Guillain-Barré Syndrome (GBS).
  • Have a history of convulsions or encephalomyelitis within 90 days prior to study vaccination.
  • Have a history of Potentially Immune-Mediated Medical Conditions (PIMMCs).
  • Have a history of alcohol or drug abuse within 5 years prior to study vaccination.
  • Have any diagnosis, current or past, of schizophrenia, bipolar disease or other psychiatric diagnosis that may interfere*** with subject compliance or safety evaluations.
  • As determined by the site PI or appropriate sub-investigator.
  • Have been hospitalized for psychiatric illness, history of suicide attempt, or confinement for danger to self or others within 10 years prior to study vaccination.
  • Have taken oral or parenteral (including intra-articular) corticosteroids of any dose within 30 days prior to study vaccination.
  • Have taken high-dose inhaled corticosteroids**** within 30 days prior to study vaccination.
  • High-dose defined as per age as using inhaled high-dose per reference chart in the National Heart, Lung and Blood Institute Guidelines for the Diagnosis and Management of Asthma (EPR-3) or other lists published in UPTODATE.
  • Received or plan to receive a licensed, live vaccine within 30 days before or after study vaccination.
  • Received or plan to receive a licensed, inactivated vaccine (excluding all licensed, seasonal IIVs) within 14 days before or after study vaccination.
  • Received or plan to receive a licensed, seasonal IIV within 21 days before or after study vaccination.
  • Received immunoglobulin or other blood products (except Rho D immunoglobulin) within 90 days prior to study vaccination.
  • Received an experimental agent* within 30 days prior to study vaccination or expect to receive an experimental agent** during the trial-reporting period***.
  • Including vaccine, drug, biologic, device, blood product, or medication.
  • Other than from participation in this trial.
  • Approximately 12 months after study vaccination.
  • Are participating or plan to participate in another clinical trial with an interventional agent** that will be received during the trial-reporting period***.
  • Including licensed or unlicensed vaccine, drug, biologic, device, blood product, or medication.
  • Approximately 12 months after study vaccination.
  • Have a history of influenza A/H7 subtype infection.
  • Had substantial direct contact** with live or freshly slaughtered poultry or pigeons while in mainland China within the past five years.
  • Substantial direct contact is defined as visited a poultry farm and/or a live poultry market.
  • Occupational exposure to or substantial direct physical contact*** with birds in the past year and through 21 days after study vaccination.
  • Exposure to free range chickens in the yard is exclusionary. Casual contact with birds at petting zoos or county or state fairs or having pet birds does not exclude subjects from study participation.
  • Female subjects who are breastfeeding.
  • Plan to travel outside the US (continental US, Hawaii and Alaska) from the time of study vaccination through 21 days after study vaccination.

Trial locations and contacts

9 sites in 1 country.

9 sites in 1 country

United States9 sites

  • Emory Children's Center - Pediatric Infectious Diseases

    Atlanta, Georgia, 30322-1014

  • University of Maryland Baltimore - School of Medicine - Medicine

    Baltimore, Maryland, 21201-1509

  • Cincinnati Children's Hospital Medical Center - Infectious Diseases

    Cincinnati, Ohio, 45229-3039

  • The University of Texas Medical Branch - Sealy Center for Vaccine Development (SCVD)

    Galveston, Texas, 77555-1121

  • Baylor College of Medicine - Molecular Virology and Microbiology

    Houston, Texas, 77030-3411

  • University of Iowa - Vaccine Research and Education Unit

    Iowa City, Iowa, 52242-2600

  • Vanderbilt University Medical Center - Infectious Diseases

    Nashville, Tennessee, 37232-0011

  • Kaiser Permanente Washington Health Research Institute - Vaccines and Infectious Diseases

    Seattle, Washington, 98101-1466

  • Saint Louis University - Center for Vaccine Development

    St Louis, Missouri, 63104-1015

Other trials in United States

About this study

Official title: A Phase II Study to Assess the Safety, Reactogenicity and Immunogenicity of a Single Dose of 2017 A/H7N9 Inactivated Influenza Vaccine (IIV) Administered Intramuscularly With or Without AS03 Adjuvant in 2013 A/H7N9 IIV Primed or A/H7 IIV Naïve Subjects

This is a Phase II clinical trial in up to 420 males and non-pregnant females, 19 to 70 years of age, inclusive, who are in good health and meet all eligibility criteria. This clinical trial is designed to assess the safety, reactogenicity and immunogenicity of one dose of a monovalent inactivated split influenza 2017 A/H7N9 virus vaccine (2017 A/H7N9 IIV), administered intramuscularly (IM) at 3.75 mcg hemagglutinin (HA) per dose, given with or without AS03 adjuvant to subjects primed with a monovalent inactivated split influenza 2013 A/H7N9 virus vaccine (2013 A/H7N9 IIV) in DMID Protocols 13-0032 and 13-0033, or to those who are A/H7 IIV-naïve. Phosphate buffered saline (PBS) diluent will be used to achieve the targeted dosage. The study will be conducted at 9 Vaccine and Treatment Evaluation Unit (VTEU) sites (including their subcontractors). Study duration is approximately 17 months with subject participation duration up to 13 months. The primary objectives are: 1) to assess the safety and reactogenicity of 2017 A/H7N9 IIV given with or without AS03 adjuvant following receipt of one dose of study vaccine; 2) to assess the serum hemagglutination inhibition (HAI) and neutralizing (Neut) antibody responses following receipt of the study vaccine.

Read the detailed description

This is a Phase II clinical trial in up to 420 males and non-pregnant females, 19 to 70 years of age, inclusive, who are in good health and meet all eligibility criteria, which include a screening erythrocyte sedimentation rate (ESR) laboratory evaluation. This clinical trial is designed to assess the safety, reactogenicity and immunogenicity of one dose of a monovalent inactivated split influenza 2017 A/H7N9 virus vaccine (2017 A/H7N9 IIV) manufactured by Sanofi Pasteur (SP), administered intramuscularly (IM) at 3.75 mcg hemagglutinin (HA) per dose, given with or without AS03 adjuvant manufactured by GlaxoSmithKline Biologicals (GSK), to subjects primed with a monovalent inactivated split influenza 2013 A/H7N9 virus vaccine (2013 A/H7N9 IIV) in DMID Protocols 13-0032 and 13-0033, or to those who are A/H7 IIV-naïve. Phosphate buffered saline (PBS) diluent manufactured by Patheon Manufacturing Services LLC will be used to achieve the targeted dosage. Subjects who received the 2013 A/H7N9 IIV in DMID Protocols 13-0032 and 13-0033 or are A/H7 IIV-naïve will be stratified by prior receipt of 2013 A/H7N9 IIV, as well as by site and prior receipt of licensed, seasonal influenza vaccine (defined as receipt of at least one of the 2017-2018 and/or 2018-2019 licensed, seasonal influenza vaccines versus none), then randomly assigned in a 1:1 ratio to 1 of 2 treatment arms to receive 1 dose of 2017 A/H7N9 IIV at 3.75 mcg HA per dose with or without AS03 adjuvant. The study will be conducted at 9 Vaccine and Treatment Evaluation Unit (VTEU) sites (including their subcontractors). Study duration is approximately 17 months with subject participation duration up to 13 months. The primary objectives are: 1) to assess the safety and reactogenicity of 2017 A/H7N9 IIV given with or without AS03 adjuvant following receipt of one dose of study vaccine; 2) to assess the serum hemagglutination inhibition (HAI) and neutralizing (Neut) antibody responses following receipt of the study vaccine. Secondary objectives are: 1) to assess unsolicited non-serious adverse events (AEs) following receipt of the study vaccine; 2) to assess medically-attended adverse events (MAAEs), including new-onset chronic medical conditions (NOCMCs) and potentially immune-mediated medical conditions (PIMMCs), following receipt of the study vaccine; 3) To assess the kinetics and durability of serum HAI and Neut antibody responses following receipt of the study vaccine.

Being tested
A/H7N9, AS03, Phosphate Buffered Saline (PBS) diluent
Keywords
A/H7N9 Inactivated Influenza Vaccine, AS03 Adjuvant, Immunogenicity, Influenza, Phase II, Reactogenicity, Safety, Vaccine
Medical subject headings
Influenza in Birds, Influenza, Human

What participants receive

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

  • A/H7N9Biological

    Monovalent split 2017 A/H7N9 Inactivated Influenza Virus Vaccine containing the Hemagglutinin (HA) and Neuraminidase (NA) from low pathogenic avian influenza A/Hong Kong/125/2017 (H7N9) and the PB2, PB1, PA, NP, M and NS from A/Puerto Rico/8/1934 (H1N1). The HA content of the 2017 A/H7N9 vaccine formulations were determined by Single Radial Immunodiffusion (SRID) assay to be approximately two times higher (14.45 mcg of HA per 0.5 mL dose) than the targeted HA content on the label (7.5 mcg of HA per 0.5 mL dose).

  • AS03Drug

    AS03 oil-in-water emulsion-based adjuvant system containing DL-alpha-tocopherol, squalene, polysorbate 80, and a buffer.

  • Phosphate Buffered Saline (PBS) diluentOther

    0.006M PBS diluent for Influenza Virus Vaccine.

Study groups in NCT03738241
Study groupRoleWhat they receive
Arm 1ExperimentalParticipants will have prior administration of 2013 A/H7N9 IIV with MF59. Then, 3.75 mcg Hemagglutinin (HA) per 0.5 ml dose of 2017 A/H7N9 Inactivated Influenza Virus Vaccine (IIV) + AS03 adjuvant administered intramuscularly on Day 1 (n=50) or 3.75 mcg HA per 0.5 ml dose of 2017 A/H7N9 IIV unadjuvanted administered intramuscularly on Day 1 (n=50). Phosphate buffered saline (PBS) diluent may be used to achieve targeted dosages.
Receives: Biological: A/H7N9; Drug: AS03; Other: Phosphate Buffered Saline (PBS) diluent
Arm 2ExperimentalParticipants will have prior administration of 2013 A/H7N9 IIV with AS03. Then, 3.75 mcg Hemagglutinin (HA) per 0.5 ml dose of 2017 A/H7N9 Inactivated Influenza Virus Vaccine (IIV) + AS03 adjuvant administered intramuscularly on Day 1 (n=50) or 3.75 mcg HA per 0.5 ml dose of 2017 A/H7N9 IIV unadjuvanted administered intramuscularly on Day 1 (n=50). Phosphate buffered saline (PBS) diluent may be used to achieve targeted dosages.
Receives: Biological: A/H7N9; Drug: AS03; Other: Phosphate Buffered Saline (PBS) diluent
Arm 3ExperimentalParticipants will have prior administration of 2013 A/H7N9 IIV 15 mcg or 45 mcg unadjuvanted. Then, 3.75 mcg Hemagglutinin (HA) per 0.5 ml dose of 2017 A/H7N9 Inactivated Influenza Virus Vaccine (IIV) + AS03 adjuvant administered intramuscularly on Day 1 (n=50) or 3.75 mcg HA per 0.5 ml dose of 2017 A/H7N9 IIV unadjuvanted administered intramuscularly on Day 1 (n=50). Phosphate buffered saline (PBS) diluent may be used to achieve targeted dosages.
Receives: Biological: A/H7N9; Drug: AS03; Other: Phosphate Buffered Saline (PBS) diluent
Arm 4ExperimentalParticipants will have prior administration of 2013 A/H7N9 IIV + MF59 or AS03 (1st) then 2013 A/H7N9 IIV 15 mcg (2nd). Then, 3.75 mcg Hemagglutinin (HA) per 0.5 ml dose of 2017 A/H7N9 Inactivated Influenza Virus Vaccine (IIV) + AS03 adjuvant administered intramuscularly on Day 1 (n=30) or 3.75 mcg HA per 0.5 ml dose of 2017 A/H7N9 IIV unadjuvanted administered intramuscularly on Day 1 (n=30). Phosphate buffered saline (PBS) diluent may be used to achieve targeted dosages.
Receives: Biological: A/H7N9; Drug: AS03; Other: Phosphate Buffered Saline (PBS) diluent
Arm 5ExperimentalParticipants who are A/H7 IIV-Naïve. Then, 3.75 mcg Hemagglutinin (HA) per 0.5 ml dose of 2017 A/H7N9 Inactivated Influenza Virus Vaccine (IIV) + AS03 adjuvant administered intramuscularly on Day 1 (n=30) or 3.75 mcg HA per 0.5 ml dose of 2017 A/H7N9 IIV unadjuvanted administered intramuscularly on Day 1 (n=30). Phosphate buffered saline (PBS) diluent may be used to achieve targeted dosages.
Receives: Biological: A/H7N9; Drug: AS03; Other: Phosphate Buffered Saline (PBS) diluent

What is being measured

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

  1. Geometric Mean Titers (GMT) of Serum Hemagglutination Inhibition (HAI) Antibodies on Day 22 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for HAI assay which was conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The geometric mean titer was calculated for each study arm and stratum from the available results at 21 days post study vaccination (Day 22).

    Measured: Day 22

  2. Geometric Mean Titers (GMT) of Serum Neutralizing (Neut) Antibodies on Day 22 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for Neutralizing assay which was conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The geometric mean titer was calculated for each study arm and stratum from the available results at 21 days post study vaccination (Day 22).

    Measured: Day 22

  3. Number of Participants Reporting Serious Adverse Events (SAEs)

    SAEs included any untoward medical occurrence that resulted in death; was life threatening; was a persistent/significant disability/incapacity; required inpatient hospitalization or prolongation or a congenital anomaly/birth defect.

    Measured: Day 1 through Day 366

  4. Number of Participants Reporting Clinical Safety Laboratory Adverse Events (AEs)

    Laboratory parameters include alanine aminotransferase (ALT), bilirubin, creatinine, hemoglobin, platelets and white blood cells (WBC). Thresholds for adverse events were considered as ALT 44 IU/L or greater (female) or 61 IU/L or greater (male); bilirubin 1.30 mg/dL or greater; creatinine 1.1 mg/dL or greater (female) or 1.4 mg/dL or greater (male); hemoglobin 11.4 g/dL or lower (female) or 12.4 g/dL or lower (male); platelets 139 x10^3/µL or below or 416 x10^3/µL or greater; or WBC or 3.9 x10^3/µL or lower or 10.6 x10^3/µL or higher.

    Measured: Day 1 to Day 8

  5. Number of Participants Reporting Solicited Injection Site Reactogenicity Events

    Injection site AEs solicited on a memory aid provided to participants included Pain, Tenderness, Itching/Pruritus, Ecchymosis/Bruising (functional grade based on interference with daily activities), Ecchymosis/Bruising (any measured value >0mm), Erythema/Redness (functional grade), Erythema/ Redness (any measured value >0mm), Induration/Swelling (functional grade), and Induration/Swelling (any measured value >0mm). Participants are considered reporting the injection site AE if they reported mild or greater severity at any time during the 8 days at or following the first vaccination.

    Measured: Day 1 through Day 8

  6. Number of Participants Reporting Solicited Systemic Reactogenicity Events

    Systemic AEs solicited on a memory aid provided to participants included Elevated Oral Temperature, Feverishness, Fatigue, Malaise, Myalgia, Arthralgia, Headache, and Nausea. Participants are considered reporting the systemic AE if they reported mild or greater severity at any time during the 8 days at or following the first vaccination.

    Measured: Day 1 through Day 8

  7. Percentage of Participants Achieving Hemagglutination Inhibition (HAI) Antibody Titer of 1:40 or Greater on Day 22 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for the HAI assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The percentage of participants with HAI titer >= 1:40 was calculated for each study arm and stratum from the available results at 21 days post study vaccination (Day 22).

    Measured: Day 22

  8. Percentage of Participants Achieving Neutralizing (Neut) Antibody Titer of 1:40 or Greater on Day 22 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for the Neutralizing assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The percentage of participants with Neut titer >= 1:40 was calculated for each study arm and stratum from the available results at 21 days post study vaccination (Day 22).

    Measured: Day 22

  9. Percentage of Participants Achieving Hemagglutination Inhibition (HAI) Antibody Seroconversion on Day 22 Against the 2017 Influenza A/H7N9 Study Vaccine Virus

    Blood was collected for the HAI assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. Seroconversion was defined as HAI pre-vaccination titer <1:10 and post-vaccination titer >= 1:40 or pre-vaccination titer >= 1:10 and minimum 4-fold rise in post-vaccination antibody titer. 21 days after study vaccination is Day 22.

    Measured: Day 22

  10. Percentage of Participants Achieving Neutralizing (Neut) Antibody Seroconversion on Day 22 Against the 2017 Influenza A/H7N9 Study Vaccine Virus

    Blood was collected for the Neutralizing assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. Seroconversion was defined as Neut pre-vaccination titer <1:10 and post-vaccination titer >= 1:40 or pre-vaccination titer >= 1:10 and minimum 4-fold rise in post-vaccination antibody titer. 21 days after study vaccination is Day 22.

    Measured: Day 22

Secondary outcomes (20)

  1. Geometric Mean Titers (GMT) of Serum Hemagglutination Inhibition (HAI) Antibodies on Day 8 Against the 2017 Influenza A/ H7N9 Vaccine Virus

    Blood was collected for HAI assay which was conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The geometric mean titer was calculated for each study arm and stratum from the available results at 7 days post study vaccination (Day 8).

    Measured: Day 8

  2. Geometric Mean Titers (GMT) of Serum Hemagglutination Inhibition (HAI) Antibodies on Day 181 Against the 2017 Influenza A/ H7N9 Vaccine Virus

    Blood was collected for HAI assay which was conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The geometric mean titer was calculated for each study arm and stratum from the available results at 180 days post study vaccination (Day 181).

    Measured: Day 181

  3. Geometric Mean Titers (GMT) of Serum Neutralizing (Neut) Antibodies on Day 8 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for Neutralizing assay which was conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The geometric mean titer was calculated for each study arm and stratum from the available results at 7 days post study vaccination (Day 8).

    Measured: Day 8

  4. Geometric Mean Titers (GMT) of Serum Neutralizing (Neut) Antibodies on Day 181 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for Neutralizing assay which was conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The geometric mean titer was calculated for each study arm and stratum from the available results at 180 days post study vaccination (Day 181).

    Measured: Day 181

  5. Geometric Mean Titers (GMTs) of Serum Hemagglutination Inhibition (HAI) Antibodies on Day 22 Against the 2013 Influenza A/H7N9 Vaccine Virus (Priming Vaccine Virus)

    Blood was collected for HAI assay which was conducted with the 2013 H7N9 priming vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The geometric mean titer was calculated for each study arm and stratum from the available results at 21 days post study vaccination (Day 22).

    Measured: Day 22

  6. Geometric Mean Titers (GMTs) of Serum Neutralizing (Neut) Antibodies on Day 22 Against the 2013 Influenza A/H7N9 Vaccine Virus (Priming Vaccine Virus)

    Blood was collected for Neutralizing assay which was conducted with the 2013 H7N9 priming vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The geometric mean titer was calculated for each study arm and stratum from the available results at 21 days post study vaccination (Day 22).

    Measured: Day 22

  7. Number of Participants Reporting Medically-Attended Adverse Events (MAAEs), New-Onset Chronic Medical Conditions (NOCMCs), and Potentially Immune-Mediated Medical Conditions (PIMMCs)

    Participants were queried at each visit for the occurrence of medically-attended adverse events (MAAEs), including new-onset chronic medical conditions (NOCMCs) and potentially immune-mediated medical conditions (PIMMCs) throughout the duration of the study.

    Measured: Day 1 through Day 366

  8. Number of Participants Reporting Unsolicited Non-serious AEs

    Adverse events were defined as any untoward medical occurrence in a participant administered a pharmaceutical product regardless of its causal relationship to the study treatment. Non-serious AEs were collected from participants at follow up visits through 21 days after study vaccination.

    Measured: Day 1 through Day 22

  9. Percentage of Participants Achieving Hemagglutination Inhibition (HAI) Antibody Titer of 1:40 or Greater on Day 8 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for the HAI assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The percentage of participants with HAI titer >= 1:40 was calculated for each study arm and stratum from the available results at 7 days post second vaccination (Day 8).

    Measured: Day 8

  10. Percentage of Participants Achieving Hemagglutination Inhibition (HAI) Antibody Titer of 1:40 or Greater on Day 181 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for the HAI assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The percentage of participants with HAI titer >= 1:40 was calculated for each study arm and stratum from the available results at 180 days post second vaccination (Day 181).

    Measured: Day 181

  11. Percentage of Participants Achieving Neutralizing (Neut) Antibody Titer of 1:40 or Greater on Day 8 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for the Neutralizing assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The percentage of participants with Neut titer >= 1:40 was calculated for each study arm and stratum from the available results at 7 days post study vaccination (Day 8).

    Measured: Day 8

  12. Percentage of Participants Achieving Neutralizing (Neut) Antibody Titer of 1:40 or Greater on Day 181 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for the Neutralizing assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The percentage of participants with Neut titer >= 1:40 was calculated for each study arm and stratum from the available results at 180 days post study vaccination (Day 181).

    Measured: Day 181

  13. Percentage of Participants Achieving Hemagglutination Inhibition (HAI) Antibody Seroconversion on Day 8 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for the HAI assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. Seroconversion was defined as HAI pre-vaccination titer <1:10 and post-vaccination titer >= 1:40 or pre-vaccination titer >= 1:10 and minimum 4-fold rise in post-vaccination antibody titer. Day 8 is 7 days post study vaccination.

    Measured: Day 8

  14. Percentage of Participants Achieving Hemagglutination Inhibition (HAI) Antibody Seroconversion on Day 181 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for the HAI assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. Seroconversion was defined as HAI pre-vaccination titer <1:10 and post-vaccination titer >= 1:40 or pre-vaccination titer >= 1:10 and minimum 4-fold rise in post-vaccination antibody titer. Day 181 is 180 days post study vaccination.

    Measured: Day 181

  15. Percentage of Participants Achieving Neutralizing (Neut) Antibody Seroconversion on Day 8 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for the Neutralizing assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. Seroconversion was defined as Neut pre-vaccination titer <1:10 and post-vaccination titer >= 1:40 or pre-vaccination titer >= 1:10 and minimum 4-fold rise in post-vaccination antibody titer. 7 days after study vaccination is Day 8.

    Measured: Day 8

  16. Percentage of Participants Achieving Neutralizing (Neut) Antibody Seroconversion on Day 181 Against the 2017 Influenza A/H7N9 Vaccine Virus

    Blood was collected for the Neutralizing assay conducted with the 2017 H7N9 vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. Seroconversion was defined as Neut pre-vaccination titer <1:10 and post-vaccination titer >= 1:40 or pre-vaccination titer >= 1:10 and minimum 4-fold rise in post-vaccination antibody titer. 180 days after study vaccination is Day 181.

    Measured: Day 181

  17. Percentage of Participants Achieving Hemagglutination Inhibition (HAI) Antibody Titer of 1:40 or Greater on Day 22 Against the 2013 Influenza A/H7N9 Vaccine Virus (Priming Vaccine Virus)

    Blood was collected for the HAI assay conducted with the 2013 H7N9 priming vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The percentage of participants with HAI titer >= 1:40 was calculated for each study arm and stratum from the available results at 21 days post second vaccination (Day 22).

    Measured: Day 22

  18. Percentage of Participants Achieving Neutralizing (Neut) Antibody Titer of 1:40 or Greater on Day 22 Against the 2013 Influenza A/H7N9 Vaccine Virus (Priming Vaccine Virus)

    Blood was collected for the Neutralizing assay conducted with the 2013 H7N9 priming vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. The percentage of participants with Neut titer >= 1:40 was calculated for each study arm and stratum from the available results at 21 days post study vaccination (Day 22).

    Measured: Day 22

  19. Percentage of Participants Achieving Hemagglutination Inhibition (HAI) Antibody Seroconversion on Day 22 Against the 2013 Influenza A/H7N9 Vaccine Virus (Priming Vaccine Virus)

    Blood was collected for the HAI assay conducted with the 2013 H7N9 priming vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. Seroconversion was defined as HAI pre-vaccination titer <1:10 and post-vaccination titer >= 1:40 or pre-vaccination titer >= 1:10 and minimum 4-fold rise in post-vaccination antibody titer. Day 22 is 21 days post study vaccination.

    Measured: Day 22

  20. Percentage of Participants Achieving Neutralizing (Neut) Antibody Seroconversion on Day 22 Against the 2013 Influenza A/H7N9 Vaccine Virus (Priming Vaccine Virus)

    Blood was collected for the Neutralizing assay conducted with the 2013 H7N9 priming vaccine virus as the antigen. Each sample was tested at least twice per the laboratory's standard operating procedure, and the geometric mean of the replicate results was calculated as that sample's result. Seroconversion was defined as Neut pre-vaccination titer <1:10 and post-vaccination titer >= 1:40 or pre-vaccination titer >= 1:10 and minimum 4-fold rise in post-vaccination antibody titer. 21 days after study vaccination is Day 22.

    Measured: Day 22

Timeline

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

  1. First posted13 Nov 2018
  2. Study start18 Dec 2018
  3. Primary completion19 Jun 2020
  4. Study completion19 Jun 2020

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 2
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
304 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03738241
Sponsor's protocol ID
17-0090
Other IDs
HHSN272201300015I
Status last verified
8 Nov 2018
First submitted
8 Nov 2018
Last updated
30 Jul 2021
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • El Sahly HM, Anderson EJ, Jackson LA, Neuzil KM, Atmar RL, Bernstein DI, Chen WH, Creech CB, Frey SE, Goepfert P, Meier J, Phadke V, Rouphael N, Rupp R, Stapleton JT, Spearman P, Walter EB, Winokur PL, Yildirim I, Williams TL, Oshinsky J, Coughlan L, Nijhuis H, Pasetti MF, Krammer F, Stadlbauer D, Nachbagauer R, Tsong R, Wegel A, Roberts PC. Anti-neuraminidase and anti-hemagglutinin stalk responses to different influenza a(H7N9) vaccine regimens. Vaccine. 2025 Feb 15;47:126689. doi: 10.1016/j.vaccine.2024.126689. Epub 2025 Jan 4.

    PubMed 39756216

  • El Sahly HM, Yildirim I, Frey SE, Winokur P, Jackson LA, Bernstein DI, Creech CB, Chen WH, Rupp RE, Whitaker JA, Phadke V, Hoft DF, Ince D, Brady RC, Edwards KM, Ortiz JR, Berman MA, Weiss J, Wegel A; DMID 17-0090 Study Group. Safety and Immunogenicity of a Delayed Heterologous Avian Influenza A(H7N9) Vaccine Boost Following Different Priming Regimens: A Randomized Clinical Trial. J Infect Dis. 2024 Feb 14;229(2):327-340. doi: 10.1093/infdis/jiad276.

    PubMed 37466221

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing A/H7N9, AS03 and Phosphate Buffered Saline (PBS) diluent in people with Avian Influenza and Influenza Immunisation, run by National Institute of Allergy and Infectious Diseases (NIAID) at 9 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 17 inclusion and 40 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 30 Jul 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 9 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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 1 Jul 2021). 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?

Geometric Mean Titers (GMT) of Serum Hemagglutination Inhibition (HAI) Antibodies on Day 22 Against the 2017 Influenza A/H7N9 Vaccine Virus (time frame: Day 22). The study lists 10 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03738241, which also lists 2 linked publications.

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 30 Jul 2021.

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