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MenHibrix

Phase 3

Neisseria Meningitidis | Monoclonal antibody | Infectious Disease |GSK plc|Last Updated: Jul 19, 2018

Success Probability

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Trial Design

RandomizedACTIVE_CONTROLLED
Total Trials2
Total Enrollment1,374

FDA Designations

No designations recorded

Clinical trial landscape

MenHibrix · 2 trials · 2 indications

Phase 3 1Phase 2 1
NCT00359983Long-Term Antibody Persistence at 1, 3 and 5 Years After a Fourth Dose of GSK Biologicals' Hib-MenCY-TT Vaccine Compared to ActHIBNeisseria Meningitidis
COMPLETED270 Analytics
PHASE3COMPLETED
Long-Term Antibody Persistence at 1, 3 and 5 Years After a Fourth Dose of GSK Biologicals' Hib-MenCY-TT Vaccine Compared to ActHIB
Neisseria MeningitidisUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Subjects With Anti- Polyribosylribitol Phosphate (Anti-PRP) Antibody Concentrations Greater Than or Equal to 0.15 Microgram Per Milliliter
One year, three years, and five years after the fourth dose vaccination.

Results up to 5 years after the fourth dose are presented.

Number of Subjects With Neisseria Meningitidis Serogroup C (MenC) Antibody Titers Greater Than or Equal to 1:8 as Measured by Serum Bactericidal Assay Using Human Complement (hSBA)
One year, three years, and five years after the fourth dose vaccination.

Results up to 5 years after the fourth dose are presented.

Number of Subjects With Neisseria Meningitidis Serogroup Y (MenY) Antibody Titers Greater Than or Equal to 1:8 as Measured by Serum Bactericidal Assay Using Human Complement (hSBA)
One year, three years, and five years after the fourth dose vaccination.

Results up to 5 years after the fourth dose are presented.

Number of Subjects With Anti-polyribosyl-ribitol-phosphate (Anti-PRP) Concentration Greater Than or Equal to 1.0 Microgram Per Milliliter (µg/mL)
One month after the 3-dose primary vaccination course

The analysis was performed on blood samples taken from half of the subjects in the MenHibrix and ActHIB/PedvaxHib groups only. The other half of the subjects in these study groups donated a blood sample after the second vaccine dose for analysis of the corresponding secondary outcome measure.

Number of Subjects With Meningococcal Polysaccharide C Serum Bactericidal Activity/Assay Using Baby Rabbit Complement (rSBA-MenC) Titer Greater Than or Equal to 1:128
One month after the 3-dose primary vaccination course

The analysis was performed on blood samples taken from half of the subjects in the MenHibrix and ActHIB + Meningitec groups only. The other half of the subjects in these study groups donated a blood sample after the second vaccine dose for analysis of the corresponding secondary outcome measure.

Number of Subjects Seroconverted for Anti-measles Antibodies
42 days after the fourth dose vaccination

The analysis was performed on blood samples taken from the subjects in the MenHibrix and ActHIB groups only. Anti-measles seroconversion is defined as the appearance of antibodies (i.e. concentration greater than or equal to the cut-off value of 150 milli-international units per milliliter (mIU/mL)) in the serum of subjects seronegative (below 150 mIU/mL) before vaccination.

Number of Subjects Seroconverted for Anti-mumps Antibodies
42 days after the fourth dose vaccination

The analysis was performed on blood samples taken from the subjects in the MenHibrix and ActHIB groups only. Anti-mumps seroconversion is defined as titer greater than or equal to 28 ED50 in subjects seronegative (\<28 ED50) before vaccination. ED50 is defined as the reciprocal of the sample dilution in the neutralising assay reducing the number of viral plaques by fifty percent.

Number of Subjects With an Anti-rubella Seroresponse
42 days after the fourth dose vaccination

The analysis was performed on blood samples taken from the subjects in the MenHibrix and ActHIB groups only. Anti-rubella seroresponse is defined as post-vaccination concentration greater than or equal to 10 IU/mL (ELISA, Enzygnost) in subjects seronegative (concentration below 4 IU/mL) before vaccination.

Number of Subjects Seroconverted for Anti-varicella Antibodies
42 days after the fourth dose vaccination

The analysis was performed on blood samples taken from the subjects in the MenHibrix and ActHIB groups only. Anti-varicella seroconversion is defined as post-vaccination titers greater than or equal to 1:5, in subjects seronegative (titers below 1:5) before vaccination.

Secondary Endpoints

Anti-PRP Geometric Mean Concentrations (GMCs)
One year, three years, and five years after the fourth dose vaccination.
Number of Subjects With Anti-PRP Antibody Concentrations Greater Than or Equal to 1.0 Microgram Per Milliliter
One year, three years, and five years after the fourth dose vaccination.
hSBA-MenC Geometric Mean Titers (GMTs)
One year, three years, and five years after the fourth dose vaccination.
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
MenHibrix 4-dose groupEXPERIMENTALSubjects received in the primary study (NCT00129129) 3 doses of MenHibrix co-administered with Pediarix and Prevnar and a 4th dose of MenHibrix co-administered with Prevnar. No vaccines were administered during this long-term persistence study.
ActHIB 4-dose groupACTIVE_COMPARATORSubjects received in the primary study (NCT00129129) 3 doses of ActHIB co-administered with Pediarix and Prevnar and a 4th dose of ActHIB co-administered with Prevnar. No vaccines were administered during this long-term persistence study.
ActHIB 3-dose + MenHibrix 4th-dose groupEXPERIMENTALSubjects received in the primary study (NCT00129129) 3 doses of ActHIB co-administered with Pediarix and Prevnar and a dose of MenHibrix co-administered with Prevnar. No vaccines were administered during this long-term persistence study.
MenHibrix GroupEXPERIMENTALSubjects primed in study 102370 with 3 doses of MenHibrix, Infanrix Penta and Prevenar vaccines and receiving a fourth dose of MenHibrix co-administered with M-M-RII and Varivax vaccines in study 102371.
ActHIB + Meningitec GroupACTIVE_COMPARATORSubjects primed in study 102370 with 3 doses of ActHIB, Infanrix Penta, Prevenar and Meningitec vaccines and receiving a dose of MenHibrix co-administered with M-M-RII and Varivax vaccines in study 102371.
ActHIB/PedvaxHIB GroupACTIVE_COMPARATORSubjects primed in study 102370 with 3 doses of ActHIB, Infanrix Penta and Prevenar vaccines and receiving a dose of PedvaxHIB co-administered with M-M-RII and Varivax vaccines in study 102371.

Interventions

NameTypeDescription
MenHibrix (Hib-MenCY-TT)BIOLOGICALFirst three doses: 3 intramuscular doses Fourth dose: 1 intramuscular dose
Hib conjugate vaccine (ActHIB)BIOLOGICALFirst three doses: 3 intramuscular doses Fourth dose: 1 intramuscular dose
Infanrix® PentaBIOLOGICALOne intramuscular dose at 2, 4 and 6 months of age
Prevenar®BIOLOGICALOne intramuscular dose at 2, 4 and 6 months of age
ActHIB®BIOLOGICALOne intramuscular dose at 2, 4 and 6 months of age
Meningitec®BIOLOGICALOne intramuscular dose at 2, 4 and 6 months of age
M-M-R®IIBIOLOGICALOne subcutaneous dose at 12-15 months of age
Varivax®BIOLOGICALOne subcutaneous dose at 12 to 15 months of age
PedvaxHIB®BIOLOGICALOne intramuscular dose at 12 to 15 months of age
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Eligibility Criteria

Age Range22 Months to 60 Months
SexALL
Healthy VolunteersYes
Study Sites21

Inclusion Criteria: * Healthy male and female children who completed the previous four dose vaccination series study (NCT00129129). The age of the child at the 3 post-fourth dose timelines are as follows: * Year 1: 22 to 36 months of age. * Year 3: 44 to 60 months of age. * Year 5: 5 years p...

Countries:United StatesAustralia
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Frequently asked questions about MenHibrix

What is MenHibrix used for?

MenHibrix is an investigational vaccine being developed for Neisseria meningitidis, the bacterium that causes meningococcal disease. It is also studied for Haemophilus influenzae type b. The drug is in Phase 3 clinical development and is not yet approved by the FDA.

Who makes MenHibrix?

MenHibrix is being developed by GSK plc, a global biopharma company traded on the stock exchange under the ticker GSK. GSK is conducting clinical trials to evaluate the vaccine's safety and efficacy in preventing meningococcal disease.

What phase is MenHibrix in?

MenHibrix is in Phase 3 clinical development. It has completed two clinical trials, including one Phase 3 study, but it remains investigational and has not been approved by regulatory authorities. The drug is still being studied for its intended use.

What clinical trials is MenHibrix in?

MenHibrix has completed two clinical trials. NCT00134719 was a Phase 2 study comparing the vaccine to licensed Hib and meningococcal serogroup C conjugate vaccines in 1104 participants in Australia. NCT00359983 was a Phase 3 study assessing long-term antibody persistence after a fourth dose in 270 participants in the United States.

How does MenHibrix work?

MenHibrix is a monoclonal antibody designed to target Neisseria meningitidis. It works by helping the immune system recognize and fight the bacteria that cause meningococcal disease. The vaccine is intended to provide protection against this infectious disease.