Clinical Study to Evaluate Safety, Immunogenicity of Investigational Flu Vaccine Compared to an Approved Flu Vaccine (QIV) in Children Previously Vaccinated in Trial V118_05

A Phase III, Randomized, Observer Blind, Multicenter Study to Evaluate the Safety and Immunogenicity of Repeated Exposure to an Adjuvanted Quadrivalent Subunit Influenza Virus Vaccine (aQIV), Administered to Subjects Previously Vaccinated in Trial V118_05

Safety, Immunogenicity of an Adjuvanted Quadrivalent Subunit Influenza Virus Vaccine Compared to Non-Adjuvanted Comparator Influenza Vaccine in Children Previously Vaccinated in Trial V118_05

Study Overview

• Status: Completed
• Conditions: Influenza
• Intervention / Treatment: Biological: Adjuvanted Quadrivalent Subunit Influenza Virus Vaccine (aQIV); Biological: non-adjuvanted Quadrivalent Influenza Vaccine (QIV)

• Study Type: Interventional
• Enrollment (Actual): 607
• Phase: Phase 3

Contacts and Locations

Study Locations

• Finland
  • Espoo, Finland, 02230
  • Helsinki, Finland, 00100
  • Helsinki, Finland, 00930
  • Järvenpää, Finland, 04400
  • Kokkola, Finland, 67100
  • Pori, Finland, 28100
  • Tampere, Finland, 33100
  • Turku, Finland, 20520
  • Vantaa, Finland, 01300
• United States
  • California
    • San Diego, California, United States, 92103
    • San Gabriel, California, United States, 91706
  • Colorado
    • Colorado Springs, Colorado, United States, 80920
  • Florida
    • Melbourne, Florida, United States, 32935
  • Kansas
    • Augusta, Kansas, United States, 67010
    • Newton, Kansas, United States, 67114
  • Kentucky
    • Louisville, Kentucky, United States, 40291
  • Louisiana
    • Metairie, Louisiana, United States, 70006
  • Nebraska
    • Bellevue, Nebraska, United States, 68005
  • New York
    • Binghamton, New York, United States, 13901
  • Ohio
    • Dayton, Ohio, United States, 45406
  • Texas
    • Austin, Texas, United States, 78705
    • Fort Worth, Texas, United States, 76135
    • San Angelo, Texas, United States, 76904
    • Tomball, Texas, United States, 77375
  • Utah
    • Salt Lake City, Utah, United States, 84121
    • Salt Lake City, Utah, United States, 84109
    • Salt Lake City, Utah, United States, 84124
    • West Jordan, Utah, United States, 84088

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 1 year to 7 years (Child)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Male or female subject who has completed their Day 181 clinic visit for non-naïve subjects or their Day 209 clinic visit for naïve subjects in parent study.
2. Individuals who give written informed consent, who can comply with study procedures, and who are available for follow-up

Exclusion Criteria:

1. Individuals recently vaccinated against influenza.
2. Subjects with contraindications to receive influenza vaccine.
3. Please contact the site for additional eligibility criteria.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: aQIV; Adjuvanted Quadrivalent Subunit Influenza	Biological: Adjuvanted Quadrivalent Subunit Influenza Virus Vaccine (aQIV); 1 dose 0.25 ml: ≥6 months to <36 months, 0.5 ml: ≥36 months to <72 months
Active Comparator: QIV; Non-Adjuvanted Quadrivalent Subunit Influenza	Biological: non-adjuvanted Quadrivalent Influenza Vaccine (QIV); 1 dose 0.25 ml: ≥6 months to <36 months, 0.5 ml: ≥36 months to <72 months

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Safety Endpoint: Number of Subjects With SAEs, AEs Leading to Withdrawal From the Study, NOCDs, AESIs and Medically Attended AEs.	Safety was assessed in terms of number of subjects between 12 months and 7 years of age reporting unsolicited events up to 12 months after last vaccination with either aQIV or QIV (comparator): serious adverse events (SAEs), AEs leading to study withdrawal, new onset chronic disease (NOCDs), adverse events of special interest (AESIs) and medically attended AEs after vaccination.	Day 1 through Day 356
Immunogenicity Endpoint: Percentage of Subjects Achieving Seroconversion and Differences in Percentage of Subjects Achieving Seroconversion for Homologous Influenza Strains (Day 22)	The percentage of subjects achieving seroconversion at Day 22 after vaccination is reported for homologous strains; Seroconversion is defined as hemagglutination inhibition (HI) ≥1:40 for subjects negative at baseline [<1:10]; or a minimum 4-fold increase in HI titer for subjects positive at baseline [HI ≥1:10]; Strains tested: A/H1N1 is Influenza A H1N1 California/7/2009 Egg Ab; A/H3N2 is Influenza A H3N2 Texas/50/2012 Ab; B/Yamagata is Influenza B Massachusetts/2/2012 Ab; B/Victoria is Influenza B Brisbane/60/2008 Egg Ab	Day 1, Day 22
Immunogenicity Endpoint: Percentage of Subjects Achieving HI Titer ≥ 1:40 and and Differences in Percentage of Subjects Achieving HI Titer ≥ 1:40 for Homologous Influenza Strains (Day 22).	The percentage of subjects achieving HI titer ≥1:40 at Day 22 after vaccination is reported for homologous strains. Strains tested: A/H1N1 is Influenza A H1N1 California/7/2009 Egg Ab; A/H3N2 is Influenza A H3N2 Texas/50/2012 Ab; B/Yamagata is Influenza B Massachusetts/2/2012 Ab; B/Victoria is Influenza B Brisbane/60/2008 Egg Ab	Day 1, Day 22

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Safety Endpoint: Number of Subjects With a Diagnosis of Failure to Thrive or Short Stature	Short stature was defined as a height/length that was 2 or more standard deviations below the mean for age and gender within a population and was assessed as being below the 2nd z-score (worse outcome) on the length/height-for-age scale. Failure-to-thrive was defined by inadequate weight gain and physical growth and assessed through 2 or more of the following criteria: height/length-for-age, weight-for-age or weight-for-height/length below the 2nd z-score, a child's growth line crossing a z-score line, a sharp change in growth curve or a curve that remains flat. The observations were made for 2 or more time points each divided by at least 2 months.	Day 1 through Day 366 (Day 1, Day 22, Day 181, Day 366)
Safety Endpoint: Number of Subjects With Any Unsolicited AEs	Safety was assessed in terms of number of subjects between 12 months and 7 years of age reporting unsolicited events up to 12 months after last vaccination with either aQIV or QIV (comparator).	Day 1 through Day 22
Safety Endpoint: Number of Subjects With Solicited Local and Systemic Adverse Events (AEs)	Safety was assessed in terms of number of subjects between 12 months and 7 years of age reporting solicited local and systemic AEs, day 1 to day 7 after vaccination with either aQIV or QIV (comparator).	Up to 7 days following vaccination
Immunogenicity Endpoint: Percentage of Subjects Achieving Seroconversion and Differences in Percentage of Subjects Achieving Seroconversion for Homologous Influenza Strains (Day 181)	The percentage of subjects achieving seroconversion at Day 181 after vaccination is reported for homologous strains. Seroconversion is defined as HI ≥1:40 for subjects negative at baseline [<1:10]; or a minimum 4-fold increase in HI titer for subjects positive at baseline [HI ≥1:10]; Strains tested: A/H1N1 is Influenza A H1N1 California/7/2009 Egg Ab; A/H3N2 is Influenza A H3N2 Texas/50/2012 Ab; B/Yamagata is Influenza B Massachusetts/2/2012 Ab; B/Victoria is Influenza B Brisbane/60/2008 Egg Ab.	Day 1, Day 181
Immunogenicity Endpoint: Percentage of Subjects Achieving HI Titer ≥ 1:40 and Difference in Percentage of Subjects Achieving HI Titer ≥ 1:40 for Homologous Influenza Strains (Day 181)	The percentage of subjects achieving HI titer ≥1:40 at Day 181 after vaccination is reported for homologous strains; Strains tested: A/H1N1 is Influenza A H1N1 California/7/2009 Egg Ab; A/H3N2 is Influenza A H3N2 Texas/50/2012 Ab; B/Yamagata is Influenza B Massachusetts/2/2012 Ab; B/Victoria is Influenza B Brisbane/60/2008 Egg Ab	Day 1, Day 181
Immunogenicity Endpoint: Geometric Mean HI Titers (GMTs) and GMT Ratios for Homologous Influenza Strains (Day 1, Day 22, Day 181)	Adjusted GMT, GMR and 95% confidence interval (CI) were analyzed using ANCOVA with study specific covariates. Strains tested: A/H1N1 is Influenza A H1N1 California/7/2009 Egg Ab; A/H3N2 is Influenza A H3N2 Texas/50/2012 Ab; B/Yamagata is Influenza B Massachusetts/2/2012 Ab; B/Victoria is Influenza B Brisbane/60/2008 Egg Ab	Day 1, Day 22, Day 181
Immunogenicity Endpoint: Geometric Mean Ratios (GMR) for Homologous Influenza Strains	The GMR is the geometric mean of the fold increase in HI titer from Day 1 to Day 22 or Day 181. Adjusted GMT, GMR and 95% CI were analyzed using ANCOVA with study specific covariates. Strains tested: A/H1N1 is Influenza A H1N1 California/7/2009 Egg Ab; A/H3N2 is Influenza A H3N2 Texas/50/2012 Ab; B/Yamagata is Influenza B Massachusetts/2/2012 Ab; B/Victoria is Influenza B Brisbane/60/2008 Egg Ab	Day 1, Day 22, and Day 181
Immunogenicity Endpoint: Percentage of Subjects Achieving Seroconversion and Difference in Percentage of Subjects Achieving Seroconversion for Heterologous Influenza Strains (Day 181)	The percentage of subjects achieving seroconversion at Day 181 after vaccination is reported for homologous strains. Seroconversion is defined as HI ≥1:40 for subjects negative at baseline [<1:10]; or a minimum 4-fold increase in HI titer for subjects positive at baseline [HI ≥1:10]; Strains tested: A/H3N2 is Influenza A H3N2 Hong Kong/2014 Ab; B/Yamagata is Influenza B Phuket/2013 Ab	Day 1, Day 181
Immunogenicity Endpoint: Percentage of Subjects Achieving HI Titer ≥ 1:40 and Difference in Percentage of Subjects Achieving HI Titer ≥ 1:40 for Heterologous Influenza Strains (Day 181)	The percentage of subjects achieving HI titer ≥1:40 at Day 181 after vaccination is reported for homologous strains; Strains tested: A/H3N2 is Influenza A H3N2 Hong Kong/2014 Ab; B/Yamagata is Influenza B Phuket/2013 Ab	Day 1, Day 181
Immunogenicity Endpoint: Geometric Mean HI Titers (GMTs) for Heterologous Influenza Strains (Day 1, Day 22, Day 181)	Adjusted GMT, GMR and 95% CI were analyzed using ANCOVA with study specific covariates. Strains tested: A/H3N2 is Influenza A H3N2 Hong Kong/2014 Ab; B/Yamagata is Influenza B Phuket/2013 Ab	Day 1, Day 22, Day 181
Immunogenicity Endpoint: Geometric Mean Ratios (GMR) for Heterologous Influenza Strains	The GMR is the geometric mean of the fold increase in HI titer from Day 1 to Day 22 or Day 181. Adjusted GMT, GMR and 95% CI were analyzed using ANCOVA with study specific covariates. Strains tested: A/H3N2 is Influenza A H3N2 Hong Kong/2014 Ab; B/Yamagata is Influenza B Phuket/2013 Ab	Day 1, Day 22, and Day 181

Collaborators and Investigators

• Sponsor: Seqirus

Study record dates

Study Major Dates

• Study Start: October 1, 2014
• Primary Completion (Actual): January 1, 2016
• Study Completion (Actual): January 1, 2016

Study Registration Dates

• First Submitted: September 25, 2014
• First Submitted That Met QC Criteria: September 29, 2014
• First Posted (Estimate): October 2, 2014

Study Record Updates

• Last Update Posted (Actual): March 15, 2023
• Last Update Submitted That Met QC Criteria: March 6, 2023
• Last Verified: March 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: RNA Virus Infections; Virus Diseases; Infections; Respiratory Tract Infections; Respiratory Tract Diseases; Orthomyxoviridae Infections; Influenza, Human; Physiological Effects of Drugs; Immunologic Factors; Vaccines
• Other Study ID Numbers: V118_05E1; 2014-002599-95 (EudraCT Number)