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Candidate Plasmodium falciparum malaria vaccine

Phase 3

Malaria | Monoclonal antibody | Infectious Disease |GSK plc|Last Updated: Sep 29, 2021

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
RandomizedCONTROLLEDBiomarker
Total Trials1
Total Enrollment699
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT02699099Immunogenicity and Safety Study of GSK Biologicals' Candidate Malaria Vaccine Given at 6, 7.5 and 9 Months of Age in Co-administration With Measles, Rubella and Yellow Fever (YF) Vaccines Followed by a Booster of the Malaria Vaccine.PHASE3 COMPLETED 699May 10, 2017Oct 7, 2020Sep 29, 20212 Ghana
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Study Endpoints
Primary Endpoints
Anti-Circumsporozoite (Anti-CS) Antibody Concentrations, One Month Post Dose 3 of SB257049 (Primary Analysis)
At one month post Dose 3 of SB257049 (Month 4)

Concentrations were expressed as Geometric Mean Concentrations (GMCs) with the following unit of measure: Enzyme Linked Immunosorbent Assay (ELISA) units per milliliter (EU/mL). The 95% confidence intervals were calculated using the Analysis of Variance (ANOVA) model. The antibody response of anti-CS was assessed in the Coad Group and the RTS,S Group.

Anti-CS Antibody Concentrations, One Month Post Dose 3 of SB257049 (Study End Analysis)
At one month post Dose 3 of SB257049 (Month 4)

Concentrations were expressed as GMCs with the following unit of measure: EU/mL. The 95% confidence intervals were calculated using the ANOVA model. The antibody response of anti-CS was assessed in the Coad Group and the RTS,S Group. The analysis was re-evaluated and performed on the Per-Protocol set for immunogenicity defined at study end.

Secondary Endpoints
Anti-CS Antibody Concentrations, Pre-vaccination and One Month Post Dose 3 of SB257049
At Day 0 and one month post Dose 3 of SB257049 (Month 4)
Number of Seropositive Subjects for Anti-CS Antibodies, Pre-vaccination and One Month Post Dose 3 of SB257049
At Day 0 and one month post Dose 3 of SB257049 (Month 4)
Anti-hepatitis B (Anti-HBs) Antibody Concentrations, Pre-vaccination and One Month Post-Dose 3 of SB257049
At Day 0 and one month post Dose 3 of SB257049 (Month 4)
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Coad groupEXPERIMENTALChildren randomized received Vitamin A at 6 months of age, SB257049 vaccine at 6, 7.5 and 9 months of age, and Yellow Fever (YF) vaccine and a combined measles and rubella vaccine at 9 months of age. Subjects received a booster dose of SB257049 vaccine at 18 months post Dose 3 (i.e. at 27 months of age).
RTS,S groupEXPERIMENTALChildren randomized received Vitamin A at 6 months of age, SB257049 vaccine at 6, 7.5 and 9 months of age, and Yellow Fever (YF) vaccine and a combined measles and rubella vaccine at 10.5 months of age. Subjects received a booster dose of SB257049 vaccine at 18 months post Dose 3 (i.e. at 27 months of age).
Control groupEXPERIMENTALChildren randomized received Vitamin A at 6 months of age and Yellow Fever (YF) vaccine and a combined measles and rubella vaccine at 9 months of age. These children received SB257049 vaccine at 10.5, 11.5 and 12.5 months of age plus a booster dose 17.5 months post Dose 3 (i.e. at 30 months of age).
Interventions
NameTypeDescription
Vitamin ADIETARY_SUPPLEMENTOral administration of Vitamin A (1 dose)
Candidate Plasmodium falciparum malaria vaccineBIOLOGICALIntramuscular administration of SB257049 vaccine (4 doses)
MR-VacBIOLOGICALSubcutaneous injection of a combined measles and rubella vaccine (1 dose)
StamarilBIOLOGICALIntramuscular injection of a yellow fever (YF) vaccine (1 dose)
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Eligibility Criteria
Age Range6 Months — 6 Years
SexALL
Healthy VolunteersYes
Study Sites2

Inclusion Criteria: * Subjects' parent(s)/Legally Acceptable Representative(s) (LAR\[s\]) who, in the opinion of the investigator, could and complied with the requirements of the protocol. * A male or female 6 months of age (from the day the child becomes 6 months of age until the day before the ch...

Countries:Ghana
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