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Pandemrix

Phase 2

Influenza | Monoclonal antibody | Infectious Disease |GSK plc|Last Updated: Aug 20, 2018

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindCONTROLLED
Total Trials1
Total Enrollment168
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00968890Immunogenicity and Safety of Vaccine GSK2340272A (H1N1) and GSK Biologicals Fluarix™ Vaccine When Co-administered in ElderlyPHASE2 COMPLETED 168Sep 12, 2009Sep 23, 2010Aug 20, 20182 Sweden
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Study Endpoints
Primary Endpoints
Number of Seroconverted Subjects After the Second Dose of Pandemrix and After Vaccination With Fluarix
21 days after the second dose of Pandemrix (=Day 42) and after vaccination with Fluarix (=Day 21 for Pandemrix+Fluarix and Pandemrix+Placebo Group or Day 42 for Pandemrix+ Placebo and Pandemrix+Fluarix Group)

A seroconverted subject is a subject who had either a pre-vaccination reciprocal hemagglutination inhibition (HI) titer \< 10 and a postvaccination reciprocal titer \>= 40, or a pre-vaccination reciprocal HI titer \>= 10 and at least a 4-fold increase in post vaccination reciprocal titer against the vaccine virus. The Pandemrix vaccine strain was A/Cal/09. The Fluarix vaccine strains were A/Bri/07, A/Uru/07 and B/Bri/08.

Number of Seroprotected Subjects After the Second Dose of Pandemrix and After Vaccination With Fluarix
21 days after the second dose of Pandemrix (=Day 42) and after vaccination with Fluarix (=Day 21 for Pandemrix+Fluarix and Pandemrix+Placebo Group or Day 42 for Pandemrix+ Placebo and Pandemrix+Fluarix Group)

A seroprotected subject was a subject with reciprocal HI titers \>= 40 against the vaccine homologous virus. The Pandemrix vaccine strain was A/Cal/09. The Fluarix vaccine strains were A/Bri/07, A/Uru/07 and B/Bri/08.

Geometric Mean Fold Rise (GMFR) After the Second Dose of Pandemrix and After Vaccination With Fluarix
21 days after the second dose of Pandemrix (=Day 42) and after vaccination with Fluarix (=Day 21 for Pandemrix+Fluarix and Pandemrix+Placebo Group or Day 42 for Pandemrix+ Placebo and Pandemrix+Fluarix Group)

The GMFR is defined as the Geometric Mean of the within-subject ratios of the post-vaccination reciprocal HI titer to the pre-vaccination reciprocal HI titer for the vaccine virus. The Pandemrix vaccine strain was A/Cal/09. The Fluarix vaccine strains were A/Bri/07, A/Uru/07 and B/Bri/08.

Secondary Endpoints
Geometric Mean Titers for Antibodies Against Pandemrix and Fluarix Vaccine Strains
Days 0, 21, 42, 182, 364
Number of Seroconverted Subjects
at Day 21 (for Pandemrix vaccine strain only), Day 182 and Day 364
Number of Seroprotected Subjects
at Day 21 (for Pandemrix vaccine strain only), Day 182 and Day 364
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Pandemrix+Fluarix and Pandemrix+PlaceboEXPERIMENTALSubjects received two doses of Pandemrix (GSK2340272A) intramuscularly in the deltoid region of the non-dominant arm co-administered with Fluarix™ on Day 0 and with a placebo on Day 21 intramuscularly in the deltoid region of the dominant arm.
Pandemrix+Placebo and Pandemrix+FluarixEXPERIMENTALSubjects received two doses of Pandemrix (GSK2340272A) intramuscularly in the deltoid region of the non-dominant arm co-administered with a placebo on Day 0 and with Fluarix™ on Day 21 intramuscularly in the deltoid region of the dominant arm.
Interventions
NameTypeDescription
Pandemrix (Influenza vaccine GSK2340272A)BIOLOGICALIntramuscular injection, 2 doses
Fluarix™BIOLOGICALIntramuscular injection, 1 dose
PlaceboBIOLOGICALIntramuscular injection, 1 dose
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Eligibility Criteria
Age Range61 Years — N/A
SexALL
Healthy VolunteersYes
Study Sites2

Inclusion Criteria: * Male or female subjects 61 years of age or older at the time of the first vaccination * Subjects who the investigator believes that they can and will comply with the requirements of the protocol. * Written informed consent obtained from the subject. * Satisfactory baseline med...

Countries:Sweden
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