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H5N1 adjuvanted split virus vaccine

Phase 3

Influenza | Monoclonal antibody | Infectious Disease |GSK plc|Last Updated: Apr 9, 2020

Success Probability

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Market & Valuation

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Trial Design

RandomizedACTIVE_CONTROLLED
Total Trials1
Total Enrollment1,206

FDA Designations

No designations recorded

Clinical trial landscape

H5N1 adjuvanted split virus vaccine · 1 trial · 2 indications

Phase 3 1
NCT00449670Assess Consistency of Immunogenicity of GlaxoSmithKline Biologicals' Pandemic Influenza Vaccine (GSK1562902A) in AdultsInfluenza
COMPLETED1,206 Analytics
PHASE3COMPLETED
Assess Consistency of Immunogenicity of GlaxoSmithKline Biologicals' Pandemic Influenza Vaccine (GSK1562902A) in Adults
InfluenzaUnlock trial analytics

Study Endpoints

Primary Endpoints

Titers for Serum Hemagglutination Inhibition (HI) Antibodies Against 2 Strains of Influenza Disease
Before vaccination (Day 0)

Titers are presented as geometric mean titers (GMTs). The 2 flu strains assessed were A/Vietnam/1194/2004 (H5N1) and A/Indonesia/5/2005 (H5N1). The reference seropositivity cut-off value was ≥ 1:10.

Secondary Endpoints

Titers for Serum Hemagglutination Inhibition (HI) Antibodies Against 2 Strains of Influenza Disease
Within 21 days following the first primary vaccination dose (Day 21)
Titers for Serum Neutralizing (SN) Antibodies Against 2 Strains of Influenza Disease
Before vaccination at Day 0 (D0) and within 21 days following 2-dose primary vaccination at Day 42 (D42)
Titers for Serum Neutralization (SN) Antibodies Against 2 Strains of Influenza Disease
Before booster vaccination at Month 6 (M6) and following booster vaccination at Month 6+21 days (M6+21D) and at Month 6+42 days (M6+42D)
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
H5N1 Adjuvanted GroupEXPERIMENTALSubjects received 2 doses of H5N1 adjuvanted split virus vaccine (lot 1, 2, 3 or 4) containing A/Vietnam/1194/2004 strain at Day 0 and Day 21 during Primary Phase. A subset of these subjects (Boosted sub-cohort) received a single dose of heterologous H5N1 adjuvanted vaccine containing A/Indonesia/05/2005 strain at Month 6 during Booster Phase. The remaining subjects (Non-Boosted sub-cohort) received a single booster dose at Month 12 or 36 after initial priming in study 111443 (NCT00652743).
H5N1 Un-adjuvanted GroupACTIVE_COMPARATORSubjects received 2 doses of a H5N1 non-adjuvanted split virus vaccine containing A/Vietnam/1194/2004 strain at Day 0 and Day 21 and two booster doses of heterologous H5N1 adjuvanted vaccine containing A/Indonesia/05/2005 strain at Month 6 and Month 6 + 21 days.

Interventions

NameTypeDescription
H5N1 adjuvanted split virus vaccine (A/Vietnam/1194/2004 strain)BIOLOGICALTwo doses of the GSK1562902A adjuvanted split virus vaccine, administered intramuscularly into the deltoid region of the non-dominant arm at Day 0 and Day 21.
H5N1 non-adjuvanted split virus vaccine (A/Vietnam/1194/2004 strain)BIOLOGICALTwo doses of the GSK1562902A non-adjuvanted split virus vaccine, administered intramuscularly into the deltoid region of the non-dominant arm at Day 0 and Day 21.
H5N1 adjuvanted split virus vaccine (A/Indonesia/05/2005 strain)BIOLOGICALBooster administration at Month 6 (and a second booster dose 21 days later for the un-adjuvanted group only) with an adjuvanted split virus pandemic influenza candidate vaccine containing the strain A/Indonesia/5/2005.
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Eligibility Criteria

Age Range18 Years to 60 Years
SexALL
Healthy VolunteersYes
Study Sites6

Inclusion Criteria: * Subjects who the investigator believes that they can and will comply with the requirements of the protocol * A male or female between, and including, 18 and 60 years of age at the time of the first vaccination. * Written informed consent obtained from the subject. * Healthy su...

Countries:Hong KongSingaporeTaiwanThailand
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