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GSK Biologicals' Synflorix

Phase 3

Infections, Streptococcal | Monoclonal antibody | Other |GSK plc|Last Updated: Nov 15, 2019

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
RandomizedCONTROLLED
Total Trials1
Total Enrollment365
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00678301Primary Vaccination Course in Children Receiving the Pneumococcal Vaccine GSK 1024850A, Zilbrix™ Hib and Polio Sabin™PHASE3 COMPLETED 365Jun 18, 2008Dec 10, 2009Nov 15, 20192 Mali, Nigeria
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Study Endpoints
Primary Endpoints
Concentrations of Antibodies Against Vaccine Pneumococcal Serotypes
At Month 3, one month after the administration of the third dose of Synflorix vaccine

Pneumococcal serotypes assessed were vaccine pneumococcal serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F and 23F. Seropositivity cut-off for the assay was an anti-pneumococcal serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F and 23F antibody (Anti-1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F and 23F) concentrations greater than or equal to (≥) 0.05 microgram per milliliter (μg/mL).

Antibody Concentrations Against Protein D (Anti-PD Antibodies)
At Month 3, one month after the administration of the third dose of Synflorix vaccine

Anti-PD antibody concentrations were expressed in enzyme-linked immunsorbent assay (ELISA) units per milliliter (EL.U/mL). Seropositivity cut-off for the assay was an anti-PD antibody concentrations ≥ 100 EL.U/mL.

Secondary Endpoints
Concentrations of Antibodies Against Cross-reactive Pneumococcal Serotypes 6A and 19A (Anti-6A and -19A)
At Month 3, one month after the administration of the third dose of Synflorix vaccine
Titers for Opsonophagocytic Activity (OPA) Against Vaccine Pneumococcal Serotypes
At Month 3, one month after the administration of the third dose of Synflorix vaccine
Titers for Opsonophagocytic Activity (OPA) Against Cross-reactive Pneumococcal Serotypes
At Month 3, one month after the administration of the third dose of Synflorix vaccine
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
SYNFLORIX™ + ZILBRIX™ HIB + POLIO SABIN™EXPERIMENTALSubjects in this group received 3 doses of Synflorix™ vaccine, according to a 3-dose schedule at 6-10-14 weeks of age co-administered with 3 doses of Expanded Program on Immunization (EPI) vaccines Zilbrix™ Hib and Polio Sabin™ according to the same schedule. The Synflorix™ and Zilbrix™ Hib vaccines were administered by intramuscular injection, in the right and left thigh respectively. The Polio Sabin™ vaccine was administered orally.
ZILBRIX™ HIB + POLIO SABIN™EXPERIMENTALSubjects in this group received 3 doses of Expanded Program on Immunization (EPI) vaccines Zilbrix™ Hib and Polio Sabin™ according to a 3-dose schedule at 6-10-14 weeks of age. The Zilbrix™ Hib vaccine was administered by intramuscular injection, in the left thigh. The Polio Sabin™ vaccine was administered orally.
Interventions
NameTypeDescription
GSK Biologicals' Synflorix™BIOLOGICAL3 IM doses.
GSK Biologicals' Polio Sabin™BIOLOGICAL3 oral doses
GSK Biologicals' Zilbrix™ HibBIOLOGICAL3 IM doses.
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Eligibility Criteria
Age Range6 Weeks — 10 Weeks
SexALL
Healthy VolunteersYes
Study Sites2

Inclusion Criteria: * Male or female subjects between, and including 6-10 weeks of age at the time of the first vaccination. * Subjects for whom the investigator believes that their parent(s)/guardian(s) can and will comply with the requirements of the protocol should be enrolled in the study. * Wr...

Countries:MaliNigeria
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