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A Dose-ranging Pediatric Study of an Adjuvanted Pandemic Influenza Vaccine

Primary Purpose

Influenza, Human

Status
Completed
Phase
Phase 2
Locations
International
Study Type
Interventional
Intervention
H5N1 antigen combined with MF59 adjuvant
Sponsored by
Seqirus
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional prevention trial for Influenza, Human focused on measuring Pandemic, Influenza, Vaccine, MF59, Adjuvant

Eligibility Criteria

6 Months - 8 Years (Child)All SexesAccepts Healthy Volunteers

INCLUSION

  1. Healthy male and female subjects of 6 months through <9 years of age on the day of informed consent/assent.
  2. Documented consent provided by the subject's parent(s)/LAR(s) have voluntarily given written informed consent/assent after the nature of the study has been explained according to local regulatory requirements, prior to study entry.
  3. Subject's parent(s)/LAR(s) able to comprehend and comply with all study procedures, and available for all clinic visits and telephone contacts scheduled in the study.
  4. Subjects must provide a baseline blood sample within 10 days prior to the Day 1 vaccination.

EXCLUSION

Each subject must not have:

  1. Progressive, unstable or uncontrolled clinical conditions.
  2. Hypersensitivity, including allergy, to any component of vaccines, medicinal products or medical equipment whose use is foreseen in this study.

Clinical conditions representing a contraindication to intramuscular vaccination and blood draws, ie,

  1. Subjects who have had a fever (body temperature measurement ≥ 38°C) within three days prior to vaccination. The subject may return for vaccination after they have been free of fever for three days.
  2. History of epilepsy or convulsions (excluding febrile convulsions).
  3. A subject who has any medical condition meeting the definition of AESI defined for the purposes of this trial (see appendix A).
  4. Subjects who have received antipyretic medication within the past 24 hours prior to vaccination. The subject may return for vaccination after a period of 24 hours has passed since the administration of an antipyretic.

    4.

Abnormal function of the immune system resulting from:

  1. Clinical conditions.
  2. Systemic administration of corticosteroids (PO/IV/IM) for more than 14 consecutive days within 90 days prior to informed consent/assent. Topical, inhaled and intranasal corticosteroids are permitted. Intermittent use (one dose in 30 days) of intra-articular corticosteroids are also permitted.
  3. Administration of antineoplastic and immunomodulating agents or radiotherapy from within 90 days prior to informed consent/assent.

    5. Suspicion of pandemic influenza illness within past six months or have ever received previous pandemic H5N1 flu vaccination.

    6. Received immunoglobulins or any blood products within 180 days prior to informed consent/assent.

    7. Received an investigational or non-registered medicinal within 30 days prior to informed consent/assent.

    8. Children of study site staff (this includes research or clinic staff) or children who are otherwise related to study site staff or have household members who are study site staff. Study site staff are employees with direct or indirect contact with study subjects and/or have access to any study documents containing subject information. This would include receptionists, persons scheduling appointments or making screening calls, regulatory specialists, laboratory technicians, medical assistants, document scanners, etc. study personnel as an immediate family or household member.

    9. Any other clinical condition that, in the opinion of the investigator, might interfere with the results of the study or pose additional risk to the subject due to participation in the study.

    10. Individuals who received any other vaccines within 14 days (for inactivated vaccines) or 28 days (for live vaccines) prior to enrolment in this study or who are planning to receive any vaccine prior to day 43. Following day 43 other vaccines may be administered, including seasonal flu.

Sites / Locations

  • 23302- Al Mare Perearstikeskus OÜ
  • 23301- Clinical Research Center
  • 60805 - De La Salle Medical and Health Sciences Institute
  • 60804 - University of Perpetual Help Dalta Medical Center
  • 60802- Philippine General Hospital
  • 60803- Philippine General Hospital - Pediatrics
  • 60801- Philippine General Hospital - Pediatrics

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm 4

Arm 5

Arm 6

Arm Type

Experimental

Experimental

Experimental

Experimental

Experimental

Experimental

Arm Label

Lowest dose, less-adjuvanted vaccine

Low dose, less-adjuvanted vaccine

Mid dose, less-adjuvanted vaccine

Lowest dose, adjuvanted vaccine

Low dose, adjuvanted vaccine

Mid dose, adjuvanted vaccine

Arm Description

Two consecutive intramuscular (IM) administrations (Day 1 and Day 22)

Two consecutive (IM) administrations (Day 1 and Day 22)

Two consecutive (IM) administrations (Day 1 and Day 22)

Two consecutive (IM) administrations (Day 1 and Day 22)

Two consecutive (IM) administrations (Day 1 and Day 22)

Two consecutive (IM) administrations (Day 1 and Day 22)

Outcomes

Primary Outcome Measures

Safety Endpoint 1: Percentages of subjects with solicited local and systemic adverse events (AEs)
Safety Endpoint 2: Percentages of subjects with any unsolicited AEs
Safety Endpoint 3: Percentages of subjects reporting serious adverse events (SAEs), new-onset chronic disease (NOCD), adverse events of special interest (AESI),and AEs leading to vaccine and/or study withdrawal
Primary Immunogenicity Endpoint 1a: Geometric Mean Titers (GMT), as measured by Hemagglutination Inhibition (HI) and Microneutralization (MN) assay against the homologous H5N1 strain
Primary Immunogenicity Endpoint 1b: (GMR), as measured by HI and MN assays against the homologous H5N1 strain
Primary Immunogenicity Endpoint 1c: Percentage of subjects achieving Seroconversion (non-detectable to ≥1:40, or 4-fold increase from a detectable Day 1 titer)
Primary Immunogenicity Endpoint 1d Percentage of subjects achieving seroconversion with a titer ≥ 1:40

Secondary Outcome Measures

Secondary Immunogenicity Endpoint 1a: GMTs, as measured by HI and MN
Secondary Immunogenicity Endpoint 1b: (GMR), as measured by MN
Secondary Immunogenicity Endpoint 1c: Percentage of subjects achieving seroconversion (non-detectable to ≥1:40, or 4- fold increase from a detectable Day 1 titer)
Secondary Immunogenicity Endpoint 1d: Percentage of subjects achieving seroconversion with a titer ≥1:40

Full Information

First Posted
November 30, 2016
Last Updated
August 22, 2022
Sponsor
Seqirus
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1. Study Identification

Unique Protocol Identification Number
NCT04669691
Brief Title
A Dose-ranging Pediatric Study of an Adjuvanted Pandemic Influenza Vaccine
Official Title
A Phase 2, Randomized, Observer-Blind, Multicenter Study to Evaluate the Immunogenicity and Safety of Several Doses of Antigen and MF59 Adjuvant Content in a Monovalent H5N1 Pandemic Influenza Vaccine in Healthy Pediatric Subjects 6 Months to < 9 Years of Age
Study Type
Interventional

2. Study Status

Record Verification Date
August 2022
Overall Recruitment Status
Completed
Study Start Date
December 19, 2020 (Actual)
Primary Completion Date
April 15, 2022 (Actual)
Study Completion Date
April 15, 2022 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Seqirus

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
The purpose/aim of this study is to evaluate responses to vaccination with different MF59 adjuvanted pandemic influenza vaccine formulations of an H5N1 vaccine in pediatric subjects. The data from this study are intended to provide information for health authorities to determine the best formulation for protection of children during the pandemic phase of a pandemic of a novel pandemic influenza strain (World Health Organization (WHO) 2013).

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Influenza, Human
Keywords
Pandemic, Influenza, Vaccine, MF59, Adjuvant

7. Study Design

Primary Purpose
Prevention
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
420 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Lowest dose, less-adjuvanted vaccine
Arm Type
Experimental
Arm Description
Two consecutive intramuscular (IM) administrations (Day 1 and Day 22)
Arm Title
Low dose, less-adjuvanted vaccine
Arm Type
Experimental
Arm Description
Two consecutive (IM) administrations (Day 1 and Day 22)
Arm Title
Mid dose, less-adjuvanted vaccine
Arm Type
Experimental
Arm Description
Two consecutive (IM) administrations (Day 1 and Day 22)
Arm Title
Lowest dose, adjuvanted vaccine
Arm Type
Experimental
Arm Description
Two consecutive (IM) administrations (Day 1 and Day 22)
Arm Title
Low dose, adjuvanted vaccine
Arm Type
Experimental
Arm Description
Two consecutive (IM) administrations (Day 1 and Day 22)
Arm Title
Mid dose, adjuvanted vaccine
Arm Type
Experimental
Arm Description
Two consecutive (IM) administrations (Day 1 and Day 22)
Intervention Type
Biological
Intervention Name(s)
H5N1 antigen combined with MF59 adjuvant
Other Intervention Name(s)
aH5N1
Intervention Description
Eligible subjects will be stratified by age at the time of enrollment into one of 2 age cohorts and within each age cohort will be randomly assigned (equally) to 1 of 6 study vaccine groups. Subjects in each study vaccine group will be scheduled to receive 2 injections of aH5N1 vaccine 3 weeks apart
Primary Outcome Measure Information:
Title
Safety Endpoint 1: Percentages of subjects with solicited local and systemic adverse events (AEs)
Time Frame
7 days post-vaccination
Title
Safety Endpoint 2: Percentages of subjects with any unsolicited AEs
Time Frame
21 days post-vaccination
Title
Safety Endpoint 3: Percentages of subjects reporting serious adverse events (SAEs), new-onset chronic disease (NOCD), adverse events of special interest (AESI),and AEs leading to vaccine and/or study withdrawal
Time Frame
387 days post-vaccination
Title
Primary Immunogenicity Endpoint 1a: Geometric Mean Titers (GMT), as measured by Hemagglutination Inhibition (HI) and Microneutralization (MN) assay against the homologous H5N1 strain
Time Frame
2 time points post-vaccination - baseline and Day 22
Title
Primary Immunogenicity Endpoint 1b: (GMR), as measured by HI and MN assays against the homologous H5N1 strain
Time Frame
Measuring ratios at 2 time points post-vaccination - Day 22/Day 1 and Day 43/Day 1
Title
Primary Immunogenicity Endpoint 1c: Percentage of subjects achieving Seroconversion (non-detectable to ≥1:40, or 4-fold increase from a detectable Day 1 titer)
Time Frame
2 time points post-vaccination - Day 22 and Day 43
Title
Primary Immunogenicity Endpoint 1d Percentage of subjects achieving seroconversion with a titer ≥ 1:40
Time Frame
2 time points post-vaccination - Day 22 and Day 43
Secondary Outcome Measure Information:
Title
Secondary Immunogenicity Endpoint 1a: GMTs, as measured by HI and MN
Time Frame
2 time points post-vaccination - Day 1 and Day 202
Title
Secondary Immunogenicity Endpoint 1b: (GMR), as measured by MN
Time Frame
Measuring a ratio at a 1 time point - Day 202/Day 1
Title
Secondary Immunogenicity Endpoint 1c: Percentage of subjects achieving seroconversion (non-detectable to ≥1:40, or 4- fold increase from a detectable Day 1 titer)
Time Frame
On Day 202 - from a detectable Day 1 titer
Title
Secondary Immunogenicity Endpoint 1d: Percentage of subjects achieving seroconversion with a titer ≥1:40
Time Frame
On Day 202

10. Eligibility

Sex
All
Minimum Age & Unit of Time
6 Months
Maximum Age & Unit of Time
8 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
INCLUSION Healthy male and female subjects of 6 months through <9 years of age on the day of informed consent/assent. Documented consent provided by the subject's parent(s)/LAR(s) have voluntarily given written informed consent/assent after the nature of the study has been explained according to local regulatory requirements, prior to study entry. Subject's parent(s)/LAR(s) able to comprehend and comply with all study procedures, and available for all clinic visits and telephone contacts scheduled in the study. Subjects must provide a baseline blood sample within 10 days prior to the Day 1 vaccination. EXCLUSION Each subject must not have: Progressive, unstable or uncontrolled clinical conditions. Hypersensitivity, including allergy, to any component of vaccines, medicinal products or medical equipment whose use is foreseen in this study. Clinical conditions representing a contraindication to intramuscular vaccination and blood draws, ie, Subjects who have had a fever (body temperature measurement ≥ 38°C) within three days prior to vaccination. The subject may return for vaccination after they have been free of fever for three days. History of epilepsy or convulsions (excluding febrile convulsions). A subject who has any medical condition meeting the definition of AESI defined for the purposes of this trial (see appendix A). Subjects who have received antipyretic medication within the past 24 hours prior to vaccination. The subject may return for vaccination after a period of 24 hours has passed since the administration of an antipyretic. 4. Abnormal function of the immune system resulting from: Clinical conditions. Systemic administration of corticosteroids (PO/IV/IM) for more than 14 consecutive days within 90 days prior to informed consent/assent. Topical, inhaled and intranasal corticosteroids are permitted. Intermittent use (one dose in 30 days) of intra-articular corticosteroids are also permitted. Administration of antineoplastic and immunomodulating agents or radiotherapy from within 90 days prior to informed consent/assent. 5. Suspicion of pandemic influenza illness within past six months or have ever received previous pandemic H5N1 flu vaccination. 6. Received immunoglobulins or any blood products within 180 days prior to informed consent/assent. 7. Received an investigational or non-registered medicinal within 30 days prior to informed consent/assent. 8. Children of study site staff (this includes research or clinic staff) or children who are otherwise related to study site staff or have household members who are study site staff. Study site staff are employees with direct or indirect contact with study subjects and/or have access to any study documents containing subject information. This would include receptionists, persons scheduling appointments or making screening calls, regulatory specialists, laboratory technicians, medical assistants, document scanners, etc. study personnel as an immediate family or household member. 9. Any other clinical condition that, in the opinion of the investigator, might interfere with the results of the study or pose additional risk to the subject due to participation in the study. 10. Individuals who received any other vaccines within 14 days (for inactivated vaccines) or 28 days (for live vaccines) prior to enrolment in this study or who are planning to receive any vaccine prior to day 43. Following day 43 other vaccines may be administered, including seasonal flu.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Clinical Program Manager
Organizational Affiliation
Seqirus
Official's Role
Study Director
Facility Information:
Facility Name
23302- Al Mare Perearstikeskus OÜ
City
Tallinn
State/Province
Harjumaa
ZIP/Postal Code
10617
Country
Estonia
Facility Name
23301- Clinical Research Center
City
Tartu
State/Province
Tartumaa
ZIP/Postal Code
50106
Country
Estonia
Facility Name
60805 - De La Salle Medical and Health Sciences Institute
City
Dasmarinas
State/Province
Manila
ZIP/Postal Code
4114
Country
Philippines
Facility Name
60804 - University of Perpetual Help Dalta Medical Center
City
Las Piñas
State/Province
Manila
ZIP/Postal Code
1742
Country
Philippines
Facility Name
60802- Philippine General Hospital
City
Manila
State/Province
National Capital Region
ZIP/Postal Code
1000
Country
Philippines
Facility Name
60803- Philippine General Hospital - Pediatrics
City
Manila
State/Province
National Capital Region
ZIP/Postal Code
1000
Country
Philippines
Facility Name
60801- Philippine General Hospital - Pediatrics
City
Manila
ZIP/Postal Code
1000
Country
Philippines

12. IPD Sharing Statement

Plan to Share IPD
Yes
IPD Sharing Plan Description
SEQIRUS supports the release of anonymized subject-level and study-level data in compliance with regulatory requirements, including Clinical Documents which are part of the CTD modules submitted to regulatory agencies for public release. Summary results disclosure is either in document form (e.g., ICH E3 Clinical Study Report synopsis) or structured data form (such as summary results in ClinicalTrials.gov (United States) or eudract.ema.europa.eu (EU Clinical Trial Registry [EU CTR])
IPD Sharing Time Frame
SEQIRUS discloses results from clinical studies within 12 months of last patient last visit (LPLV) unless otherwise mandated by local laws or regulations.
IPD Sharing Access Criteria
SEQIRUS will consider requests from qualified scientific and medical researchers to disclose protocols, anonymized subject-level data and study-level data when there is medical, scientific and/or public health interest to ensure the safe use of a Seqirus product licensed on or after 1 January 2014 in the United States (US) and/or the European Union (EU). This applies to Seqirus-sponsored interventional studies initiated after 27 September 2007 and ongoing as of 26 December 2007, that have been included as part of a US or EU submission package which received approval in US and EU on or after 1 January 2014 and have been accepted for publication
IPD Sharing URL
https://www.seqirus.us/partnering
Citations:
PubMed Identifier
20819892
Citation
Vesikari T, Karvonen A, Tilman S, Borkowski A, Montomoli E, Banzhoff A, Clemens R. Immunogenicity and safety of MF59-adjuvanted H5N1 influenza vaccine from infancy to adolescence. Pediatrics. 2010 Oct;126(4):e762-70. doi: 10.1542/peds.2009-2628. Epub 2010 Sep 6.
Results Reference
background
PubMed Identifier
22777094
Citation
Vesikari T, Forsten A, Borkowski A, Gaitatzis N, Banzhoff A, Clemens R. Homologous and heterologous antibody responses to a one-year booster dose of an MF59((R)) adjuvanted A/H5N1 pre-pandemic influenza vaccine in pediatric subjects. Hum Vaccin Immunother. 2012 Jul;8(7):921-8. doi: 10.4161/hv.20248. Epub 2012 Jul 1.
Results Reference
background

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A Dose-ranging Pediatric Study of an Adjuvanted Pandemic Influenza Vaccine

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