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Phase III clinical study to evaluate the effectiveness(immunogenicity) and safety of ‘GC501(influenza split vaccine)’

A randomized, double-blind, multi-center, therapeutic confirmatory study to evaluate the effectiveness(immunogenicity) and safety of ‘GC501(influenza split vaccine)’ administered intramuscularly in healthy adults

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
CRIS
Registry ID
KCT0000034
Enrollment
1397
Registered
2010-09-13
Start date
2008-07-03
Completion date
Unknown
Last updated
2019-03-11

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

Conditions

None listed

Interventions

Drug, Biological/Vaccine : 1. Step 1(Pilot study) (1) Investigational drug &#8226
Product name: GC501(influenza split vaccine) / Green Cross Co.Ltd. &#8226
Dosage: 0.5 mL prefilled syringe (containing 45&micro
g of purified, inactivated influenza viral antigen) &#8226
Administration method: a single 0.5 mL dose was intramuscularly injected. (2) Comparator drug &#8226
Product name: placebo &#8226
Dosage: 0.5 mL prefilled syringe &#8226
Administration method: a single 0.5 mL dose was intramuscularly injected. 2. Step 2(Pivotal study) (1) Investigational drug &#8226
Administration method: a single 0.5 mL dose was intramuscularly injected. (2) Comparator drug &#8226
Product name: ‘Green Cross Co. &#8211
Influenza split vaccine II prefilled syringe (influenza split vaccine)’ containing the final bulk lots from GlaxoSmithKline (GSK) PLC / Green Cross Co. Ltd. &#8226
Dosage: 0.5 mL Pre-filled syringe (containing 45&micro
Administration method: a single 0.5 mL dose was intramuscularly injected. 3. Step 3(Safety study) &#8226

Sponsors

Green Cross
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1)Healthy adults 18 years of age and older who can be followed up for 21 days. 2)Subjects who gave voluntary written consent to participate in the study, and are able to comply with the study requirements.

Exclusion criteria

Exclusion criteria: 1)Subjects with a known history of hypersensitivity or allergic reaction to eggs or egg products, to chicken or chicken products, to any component of the study vaccine, neomycin or gentamicin 2)Subjects with immune system disorder, including immune deficiency disease 3)Subjects with a history of Guillain-Barre syndrome 4)Subjects with severe chronic disease (e.g.; cardiovascular disease except for controlled hypertension, respiratory disease, metabolic disease, renal dysfunction or hemoglobinopathy etc.) who in the investigator’s opinion may have a difficulty in participating in the study. 5)Subjects with hemophilia or receiving a treatment with an anticoagulant, who are at increased risk of serious bleeding during intramuscular injection. 6)Subjects who had acute fever with the body temperature exceeding 38.0? within 72 hours before vaccination with the study drug. 7)Subjects who had received other vaccination within 7 days before vaccination with the study drug, or those who had another vaccination scheduled during the study. 8)Subjects who had received immunosuppressant or immune modifying drug within 3 months before vaccination with the study drug. 9)Subjects who had received immunoglobulin or blood products within 3 months before vaccination with the study drug or are planning to receive them during the study. 10)Subjects who had received influenza vaccination within 6 months prior to the vaccination with the study drug 11)Pregnant women, breast-feeding women or women of childbearing potential who do not use an appropriate method of contraception (use of condom, intrauterine contraceptive device, or hormone contraceptives, or if a male partner had vasectomy) 12)Subjects who had participated in other clinical study within 30 days prior to vaccination with the study drug. 13)Subjects with other clinically significant medical or psychological condition, who in the investigator’s opinion are not suited for the study.

Design outcomes

Primary

MeasureTime frame
Primary efficacy endpoints_The percentage of subjects achieving seroconversion for HI antibody (Seroconversion rate) ;Primary efficacy endpoints_? The percentage of subjects achieving a post-vaccination HI antibody titer = 1:40 (Seroprotection rate);Primary safety endpoints_Solicited adverse events(Day 0 ~ 6);Primary safety endpoints_Unsolicited adverse events(Day 0 ~ 21)

Secondary

MeasureTime frame
Secondary efficacy endpoints_GMT (Geometric Mean Titer) and GMR (Geometric Mean Ratio) of HI antibody titer before vaccination (Day 0) and after vaccination (Day 21).;Secondary efficacy endpoints_The percentage of subjects with a pre-vaccination (Day 0) HI antibody titer <1:40, and a minimum four-fold rise in post-vaccination (Day 21) HI antibody titer ;Secondary safety endpoints- Vital signs and physical examination, and the results of laboratory test (haematology/blood chemistry test, urine test).

Countries

Korea, Republic of

Contacts

Public ContactWoo-Joo Kim

Koera University Guro Hospital

Outcome results

None listed

Source: CRIS (via WHO ICTRP) · Data processed: Feb 4, 2026