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Study to Evaluate the Immunogenicity and Safety of 'IL-YANG Quadrivalent Influenza Vaccine Inj.'

A Multicenter, Randomized, Double-blind, Active-controlled, Parallel Phase III Study to Investigate the Immunogenicity and Safety of 'IL-YANG Quadrivalent Influenza Vaccine Inj.' After Intramuscular Administration in Healthy Adult Subjects

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02677493
Enrollment
1794
Registered
2016-02-09
Start date
2015-10-31
Completion date
2016-06-30
Last updated
2023-09-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Influenza

Brief summary

This study evaluates the immunogenicity and safety of 'IL-YANG Quadrivalent Influenza Vaccine Inj.' in healthy male and female adults at the age of 19 or older.

Detailed description

In this study, only eligible subjects for the study based on the inclusion/exclusion criteria will be randomized to the following stratification groups by age to receive one dose of the test vaccine, comparator 1, or comparator 2. * Group A: healthy adults at the age of ≥ 19 and \< 65. * Group B: healthy adults at the age of ≥ 65. During the study participation, the investigator will assess immunogenicity and safety in subjects. The investigator will perform immunogenicity tests at Visits 1 and 3 (end of study visit) for immunogenicity evaluation (prior to the investigational product vaccination) and instruct subjects to record AEs occurring after the investigational product vaccination for safety assessment. A blood sample will be collected from a subject who is assigned a subject number. Following an intramuscular injection of 0.5mL investigational product in the deltoid muscle of the shoulder, the subject will have a study visit on Week 4 for blood sampling for antibody titer testing. In addition, a telephone visit will be performed to assess serious AEs (SAEs) up to Day 180 after vaccination.

Interventions

A single 0.5mL dose administrated as an intramuscular injection.

BIOLOGICALIL-YANG Flu Vaccine Prefilled Syringe

A single 0.5mL dose administrated as an intramuscular injection.

BIOLOGICALIL-YANG Trivalent Influenza Vaccine

A single 0.5mL dose administrated as an intramuscular injection.

Sponsors

Il-Yang Pharm. Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
19 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Healthy men and women at the age of 19 or older. * Women of childbearing potential must have a negative pregnancy test (urine HCG) at the screening visit. * Subjects who were given, and fully understood, the information about the study, and have provided voluntary written informed consent to participate in the study and to comply with all applicable study requirements.

Exclusion criteria

* Subjects with known allergy to eggs, chicken, or any components of the study vaccine. * Subjects who had received an influenza vaccine within the last 6 months prior to study entry. * Subjects who have immune function disorders including immunodeficiency diseases or relevant family history. * Subjects who donated blood within 1 week prior to vaccination or plan to donate blood during the period from Day 1 to Month 7 of vaccination. * Subjects with a history of Guillain-Barre syndrome. * Subjects with Down's syndrome or cytogenetic disorders. * Subjects who are considered by the investigator to have difficulties in study participation due to severe chronic diseases (e.g., cardiovascular diseases except controlled hypertension and respiratory diseases with respiratory failure, metabolic diseases, renal function disorders, hemoglobinopathy, etc.). * Subjects with hemophilia or coagulation disorder, who are at increased risk of serious bleeding during intramuscular injection. * Subjects who had an acute fever with body temperature \> 38.0 ºC within 72 hours prior to administration of the study vaccine. * Subjects who had received another vaccine within 28 days before administration of the study vaccine or are planning to receive another vaccine during the study. * Subjects who had received immunosuppressants or immune modifying drugs within 3 months prior to the investigational product vaccination. 1. Azathioprine, cyclosporin, interferon, G-CSF, tacrolimus, everolimus, sirolimus, etc. 2. High dose corticosteroids (a subject taking high doses, which is defined as 2mg/kg/day or higher of prednisolone administered for longer than 14 consecutive days, is not eligible for this study. The use of inhaled, nasal and topical corticosteroids is allowed, regardless of doses). * Subjects who had previously received immunoglobulin or blood-derived products within the last 3 months prior to administration of the study vaccine, or are scheduled to receive a treatment with blood-derived products during the study. * Subjects who had participated in another clinical trial within the 30 days before administration of the study vaccine. * Female subjects of childbearing potential who do not agree to use an acceptable method of birth control\* for this study during the study period. * Medically acceptable methods of birth control: condom, injectable or implantable contraceptives, intrauterine device, or oral contraceptives, etc. * Subjects with other clinically significant medical or psychiatric illness who in the investigator's opinion, are not be suitable for the study.

Design outcomes

Primary

MeasureTime frameDescription
Rate of Healthy Adults Aged ≥19 Years With SeroconversionDay 28Seroconversion is defined as follows. (Case 1) A pre-vaccination (Day 0) HI antibody titer \< 1:10 and a post-vaccination (Day 28) HI antibody titer ≥ 1: 40. or (Case 2) a pre-vaccination (Day 0) HI antibody titer ≥ 1:10 and a minimum four-fold rise in post-vaccination (Day 28) HI antibody titer.
Rate of Healthy Adults Aged ≥19 Years With SeroprotectionDay 28Seroprotection: A post-vaccination (Day 28) HI antibody titer ≥ 1:40.

Secondary

MeasureTime frameDescription
Geometric Mean Titer as Measured by HI Antibody Titer on Day 28 After Vaccination of the Investigational Product (GMTcomparator/GMTtest Vaccine).Day 28
Difference of Seroconversion Rate(SCR) of HI Antibody Titer After 28days Vaccination(SCRcomparator-SCRtest Vaccine)Day 28The IL-YANG Quadrivalent Influenza Vaccine contain two types of B strain, while two kinds of Trivalent Influenza Vaccine contain each type of B strain. Primary outcome was about seroconversion and seroprotection rate of HI antibody, so each results of 3 kinds of vaccine was described. Considering the cross-reaction between two types of B strain, the analysis was designed in a way that the SCR/SPR of the B strains can be compared, respectively. However, secondary outcome, unlike the primary outcome, is expressed as a ratio(difference of seroconversion rate). So, the above factors were not to be consider. All methods of analysis are comply with the request of MFDS, and the result data that may make you confuse will be delete.
Percentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupDay 28The percentage of subjects with HI antibody SCR on Day 28 after vaccination of the investigational product was calculated and its 95% two-sided CI was presented for each strain by treatment group and by age group. The immunogenicity of the test vaccine was to be demonstrated if the lower limit of the 95% two-sided CI by age group was higher than the above mentioned criteria (40% for \< 65 years of age, 30% for ≥ 65 years of age) in each treatment group.
Geometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Day 28
Geometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Day 28
Rate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Day 28Seroprotection is defined as follows. subjects who have a post-vaccination (Day 28) HI antibody titer ≥ 1: 40

Participant flow

Participants by arm

ArmCount
IL-YANG Quadrivalent Influenza Vaccine
The QIV is included both B strain (Yamagata, Victoria). IL-YANG Quadrivalent Influenza Vaccine: A single 0.5mL dose administrated as an intramuscular injection.
1,197
IL-YANG Flu Vaccine Prefilled Syringe
This TIV is included the B/Yamagata strain, and it was approved for commercial sale by MFDS. IL-YANG Flu Vaccine Prefilled Syringe: A single 0.5mL dose administrated as an intramuscular injection.
298
IL-YANG Trivalent Influenza Vaccine
This TIV is included the B/Victoria strain. IL-YANG Trivalent Influenza Vaccine: A single 0.5mL dose administrated as an intramuscular injection.
299
Total1,794

Baseline characteristics

CharacteristicTotalIL-YANG Quadrivalent Influenza VaccineIL-YANG Flu Vaccine Prefilled SyringeIL-YANG Trivalent Influenza Vaccine
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
272 Participants182 Participants44 Participants46 Participants
Age, Categorical
Between 18 and 65 years
1522 Participants1015 Participants254 Participants253 Participants
Age, Continuous44.8 years
STANDARD_DEVIATION 14.6
44.7 years
STANDARD_DEVIATION 14.5
44.5 years
STANDARD_DEVIATION 14.7
45.7 years
STANDARD_DEVIATION 14.6
Sex: Female, Male
Female
1224 Participants812 Participants208 Participants204 Participants
Sex: Female, Male
Male
570 Participants385 Participants90 Participants95 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
0 / 1,1940 / 2980 / 299
serious
Total, serious adverse events
0 / 1,1942 / 2981 / 299

Outcome results

Primary

Rate of Healthy Adults Aged ≥19 Years With Seroconversion

Seroconversion is defined as follows. (Case 1) A pre-vaccination (Day 0) HI antibody titer \< 1:10 and a post-vaccination (Day 28) HI antibody titer ≥ 1: 40. or (Case 2) a pre-vaccination (Day 0) HI antibody titer ≥ 1:10 and a minimum four-fold rise in post-vaccination (Day 28) HI antibody titer.

Time frame: Day 28

Population: The immunogenicity data obtained from the study subjects were analyzed primarily in the Per Protocol Set that was consists of subjects who had at least one dose of the investigational product and from whom post-treatment primary efficacy endpoint data, and have completed the study up to Visit 3 without a major protocol violation.

ArmMeasureGroupValue (NUMBER)
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionA/H1N147.7 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionA/H3N278.7 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionB/Yamagata51.8 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionB/Victoria47.7 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionB/Victoria24.2 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionA/H1N149.5 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionB/Yamagata54.9 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionA/H3N281.6 percentage of subjects
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionB/Victoria54.8 percentage of subjects
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionA/H3N277.9 percentage of subjects
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionB/Yamagata23.1 percentage of subjects
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroconversionA/H1N149.0 percentage of subjects
Primary

Rate of Healthy Adults Aged ≥19 Years With Seroprotection

Seroprotection: A post-vaccination (Day 28) HI antibody titer ≥ 1:40.

Time frame: Day 28

Population: The immunogenicity data obtained from the study subjects were analyzed primarily in the Per Protocol Set that was consists of subjects who had at least one dose of the investigational product and from whom post-treatment primary efficacy endpoint data, and have completed the study up to Visit 3 without a major protocol violation.

ArmMeasureGroupValue (NUMBER)
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionA/H1N188.2 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionA/H3N290.0 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionB/Yamagata86.3 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionB/Victoria84.9 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionB/Victoria69.3 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionA/H1N189.4 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionB/Yamagata88.4 percentage of subjects
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionA/H3N292.5 percentage of subjects
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionB/Victoria85.7 percentage of subjects
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionA/H3N289.5 percentage of subjects
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionB/Yamagata64.6 percentage of subjects
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 Years With SeroprotectionA/H1N187.1 percentage of subjects
Comparison: To evaluate if the seroconversion (SCR) and seroprotection (SPR) rates on Day 28 after vaccination of IL-YANG Quadrivalent Influenza Vaccine Inj. meet the following criteria in all age groups of healthy male and female adults at the age of 19 or older.p-value: 0.09135ANCOVA
Secondary

Difference of Seroconversion Rate(SCR) of HI Antibody Titer After 28days Vaccination(SCRcomparator-SCRtest Vaccine)

The IL-YANG Quadrivalent Influenza Vaccine contain two types of B strain, while two kinds of Trivalent Influenza Vaccine contain each type of B strain. Primary outcome was about seroconversion and seroprotection rate of HI antibody, so each results of 3 kinds of vaccine was described. Considering the cross-reaction between two types of B strain, the analysis was designed in a way that the SCR/SPR of the B strains can be compared, respectively. However, secondary outcome, unlike the primary outcome, is expressed as a ratio(difference of seroconversion rate). So, the above factors were not to be consider. All methods of analysis are comply with the request of MFDS, and the result data that may make you confuse will be delete.

Time frame: Day 28

Population: Please see Outcome Measure Description and Arm/Group Descriptionabove.

ArmMeasureGroupValue (NUMBER)
IL-YANG Quadrivalent Influenza VaccineDifference of Seroconversion Rate(SCR) of HI Antibody Titer After 28days Vaccination(SCRcomparator-SCRtest Vaccine)Strain H1N149.2 percentage of participants
IL-YANG Quadrivalent Influenza VaccineDifference of Seroconversion Rate(SCR) of HI Antibody Titer After 28days Vaccination(SCRcomparator-SCRtest Vaccine)Strain H3N279.7 percentage of participants
IL-YANG Quadrivalent Influenza VaccineDifference of Seroconversion Rate(SCR) of HI Antibody Titer After 28days Vaccination(SCRcomparator-SCRtest Vaccine)Strain B Yamagata54.9 percentage of participants
IL-YANG Quadrivalent Influenza VaccineDifference of Seroconversion Rate(SCR) of HI Antibody Titer After 28days Vaccination(SCRcomparator-SCRtest Vaccine)Strain B Victoria54.8 percentage of participants
IL-YANG Quadrivalent Influenza VaccineDifference of Seroconversion Rate(SCR) of HI Antibody Titer After 28days Vaccination(SCRcomparator-SCRtest Vaccine)Strain B Victoria47.7 percentage of participants
IL-YANG Quadrivalent Influenza VaccineDifference of Seroconversion Rate(SCR) of HI Antibody Titer After 28days Vaccination(SCRcomparator-SCRtest Vaccine)Strain H1N147.7 percentage of participants
IL-YANG Quadrivalent Influenza VaccineDifference of Seroconversion Rate(SCR) of HI Antibody Titer After 28days Vaccination(SCRcomparator-SCRtest Vaccine)Strain B Yamagata51.8 percentage of participants
IL-YANG Quadrivalent Influenza VaccineDifference of Seroconversion Rate(SCR) of HI Antibody Titer After 28days Vaccination(SCRcomparator-SCRtest Vaccine)Strain H3N278.7 percentage of participants
Secondary

Geometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.

Time frame: Day 28

ArmMeasureGroupValue (GEOMETRIC_MEAN)
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H1N13.9 Ratio of GMT titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H3N29.5 Ratio of GMT titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Yamagata3.3 Ratio of GMT titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Victoria2.9 Ratio of GMT titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Victoria2.1 Ratio of GMT titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H1N14.1 Ratio of GMT titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Yamagata3.5 Ratio of GMT titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H3N210.9 Ratio of GMT titer
IL-YANG Trivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Victoria3.0 Ratio of GMT titer
IL-YANG Trivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H3N29.8 Ratio of GMT titer
IL-YANG Trivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Yamagata2.0 Ratio of GMT titer
IL-YANG Trivalent Influenza VaccineGeometric Mean Ratio as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H1N13.7 Ratio of GMT titer
Secondary

Geometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.

Time frame: Day 28

ArmMeasureGroupValue (GEOMETRIC_MEAN)
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Yamagata74.3 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Victoria60.1 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H1N182.2 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H3N2127.6 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Yamagata75.9 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H3N2135.6 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Victoria41.2 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H1N189.8 Titer
IL-YANG Trivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Victoria62.0 Titer
IL-YANG Trivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H1N180.6 Titer
IL-YANG Trivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain H3N2125.8 Titer
IL-YANG Trivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer Before (Day 0) and on Day 28 After Vaccination of the Investigational Product.Strain B Yamagata44.0 Titer
Secondary

Geometric Mean Titer as Measured by HI Antibody Titer on Day 28 After Vaccination of the Investigational Product (GMTcomparator/GMTtest Vaccine).

Time frame: Day 28

ArmMeasureGroupValue (GEOMETRIC_MEAN)
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer on Day 28 After Vaccination of the Investigational Product (GMTcomparator/GMTtest Vaccine).Strain H1N182.2 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer on Day 28 After Vaccination of the Investigational Product (GMTcomparator/GMTtest Vaccine).Strain H3N2127.6 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer on Day 28 After Vaccination of the Investigational Product (GMTcomparator/GMTtest Vaccine).Strain B Yamagata74.3 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer on Day 28 After Vaccination of the Investigational Product (GMTcomparator/GMTtest Vaccine).Strain B Victoria60.1 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer on Day 28 After Vaccination of the Investigational Product (GMTcomparator/GMTtest Vaccine).Strain B Victoria62.0 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer on Day 28 After Vaccination of the Investigational Product (GMTcomparator/GMTtest Vaccine).Strain H1N185.1 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer on Day 28 After Vaccination of the Investigational Product (GMTcomparator/GMTtest Vaccine).Strain B Yamagata75.9 Titer
IL-YANG Quadrivalent Influenza VaccineGeometric Mean Titer as Measured by HI Antibody Titer on Day 28 After Vaccination of the Investigational Product (GMTcomparator/GMTtest Vaccine).Strain H3N2130.6 Titer
Secondary

Percentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age Group

The percentage of subjects with HI antibody SCR on Day 28 after vaccination of the investigational product was calculated and its 95% two-sided CI was presented for each strain by treatment group and by age group. The immunogenicity of the test vaccine was to be demonstrated if the lower limit of the 95% two-sided CI by age group was higher than the above mentioned criteria (40% for \< 65 years of age, 30% for ≥ 65 years of age) in each treatment group.

Time frame: Day 28

Population: Rate of healthy adults aged ≥19 \~ \<65 years

ArmMeasureGroupValue (GEOMETRIC_MEAN)
IL-YANG Quadrivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain H1N148.7 percentage of participants
IL-YANG Quadrivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain H3N280.3 percentage of participants
IL-YANG Quadrivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain B Yamagata52.3 percentage of participants
IL-YANG Quadrivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain B Victoria48.3 percentage of participants
IL-YANG Quadrivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain B Victoria27.5 percentage of participants
IL-YANG Quadrivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain H1N151.8 percentage of participants
IL-YANG Quadrivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain B Yamagata54.6 percentage of participants
IL-YANG Quadrivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain H3N283.3 percentage of participants
IL-YANG Trivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain B Victoria56.6 percentage of participants
IL-YANG Trivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain H3N278.7 percentage of participants
IL-YANG Trivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain B Yamagata24.5 percentage of participants
IL-YANG Trivalent Influenza VaccinePercentage of Subjects With SCR on Day 28 After Vaccination of the Investigational Product by Age GroupStrain H1N151.8 percentage of participants
Secondary

Rate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.

Seroprotection is defined as follows. subjects who have a post-vaccination (Day 28) HI antibody titer ≥ 1: 40

Time frame: Day 28

Population: Rate of healthy adults aged ≥65 years

ArmMeasureGroupValue (MEAN)
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain B Yamagata49.2 percentage of participants
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain H3N269.8 percentage of participants
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain H1N142.5 percentage of participants
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain B Victoria44.7 percentage of participants
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain H3N271.4 percentage of participants
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain H1N135.7 percentage of participants
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain B Yamagata57.1 percentage of participants
IL-YANG Quadrivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain B Victoria4.8 percentage of participants
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain B Yamagata15.6 percentage of participants
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain H3N273.3 percentage of participants
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain H1N133.3 percentage of participants
IL-YANG Trivalent Influenza VaccineRate of Healthy Adults Aged ≥19 ~ <65 Years and ≥65 Years With Seroprotection, Respectively.Strain B Victoria44.4 percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026