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Meningococcal Group B vaccine

Phase 3

Meningococcal Immunisation (Healthy Volunteers) | Monoclonal antibody | Other |Sanofi|Last Updated: Sep 15, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials1
Total Enrollment570

FDA Designations

No designations recorded

Clinical trial landscape

Meningococcal Group B vaccine · 2 trials · 2 indications

Phase 3 2
NCT04084769Study to Evaluate the Immune Response After a Booster Dose of a Quadrivalent Meningococcal (MenACYW) Conjugate Vaccine When Administered Alone or Concomitantly With a Licensed Meningococcal Serogroup B Vaccine, in Participants Who Received Primary Quadrivalent Meningococcal Conjugate Vaccine (MCV4)Meningococcal Immunisation (Healthy Volunteers)
COMPLETED570 Analytics
NCT03632720Immunogenicity and Safety of a Quadrivalent Meningococcal Conjugate Vaccine in Infants and Toddlers When Administered Concomitantly With Routine Pediatric Vaccines in the United KingdomHealthy Volunteers (Meningococcal Infection)
COMPLETED788 Analytics
PHASE3COMPLETED
Study to Evaluate the Immune Response After a Booster Dose of a Quadrivalent Meningococcal (MenACYW) Conjugate Vaccine When Administered Alone or Concomitantly With a Licensed Meningococcal Serogroup B Vaccine, in Participants Who Received Primary Quadrivalent Meningococcal Conjugate Vaccine (MCV4)
Meningococcal Immunisation (Healthy Volunteers)Unlock trial analytics
PHASE3COMPLETED
Immunogenicity and Safety of a Quadrivalent Meningococcal Conjugate Vaccine in Infants and Toddlers When Administered Concomitantly With Routine Pediatric Vaccines in the United Kingdom
Healthy Volunteers (Meningococcal Infection)Unlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants With Vaccine Seroresponse Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With MenACYW Conjugate Vaccine in Study MET59: Group 1
Day 30 (post-vaccination) in study MET59

Antibody titers against meningococcal serogroups A, C, Y, and W were measured by Serum Bactericidal Assay Using Human Complement (hSBA). The hSBA vaccine seroresponse was defined as a post-vaccination hSBA titer greater than or equal to (\>=) 1:16 for participants with pre-vaccination hSBA titer less than (\<) 1:8, or a \>= 4-fold increase in hSBA titer from pre-vaccination to post-vaccination for participants with pre-vaccination hSBA titer \>= 1:8. Immune response was considered sufficient if lower limit of the 1-sided 97.5% CI for percentage of participants with hSBA seroresponse against serogroups A, C, Y and W was greater than 75%.

Percentage of Participants With Vaccine Seroresponse Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With MenACYW Conjugate Vaccine in Study MET59: Group 2
Day 30 (post-vaccination) in study MET59

Antibody titers against meningococcal serogroups A, C, Y, and W were measured by hSBA. The hSBA vaccine seroresponse was defined as a post-vaccination hSBA titer \>=1:16 for participants with pre-vaccination hSBA titer \<1:8, or a \>=4-fold increase in hSBA titer from pre-vaccination to post-vaccination for participants with pre-vaccination hSBA titer \>=1:8. Immune response was considered sufficient if lower limit of the 1-sided 97.5% CI for percentage of participants with hSBA seroresponse against serogroups A, C, Y and W was greater than 75%.

Percentage of Participants With Antibody Titers Greater Than or Equal to (>=) 1:8 Against Meningococcal Serogroups A, C, Y, and W Measured by hSBA After Vaccination: Groups 1 and 2 - PPAS3
30 days post-vaccination at the age of 12 to 13 months (i.e., at the age of 13 to 14 months)

Antibody titers of Meningococcal Serogroups A, C, Y, and W were measured by serum bactericidal assay using human complement (hSBA) assay. Percentage of participants with antibody titers \>=1:8 for meningococcal serogroups A, C, Y, and W were reported in this outcome measure. Data for this outcome measure was not planned to be collected and analyzed for Group 3.

Secondary Endpoints

Percentage of Participants With Vaccine Seroresponse Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With MenACYW Conjugate Vaccine in Study MET59: Group 1 and 2
Day 6 (post-vaccination) in study MET59
Percentage of Participants With Vaccine Seroprotection Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With MenACYW Conjugate Vaccine in Study MET59: Group 1 and 2
Day 6 (post-vaccination) in study MET59
Geometric Mean Titers (GMTs) of Antibodies Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With MenACYW Conjugate Vaccine in Study MET59: Group 1 and 2
Day 6 (post-vaccination) in study MET59
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Group 1: MenACYW Conjugate vaccineEXPERIMENTALParticipants who received a single dose of MenACYW Conjugate vaccine in previous studies MET50 (NCT02199691) or MET43 (NCT02842853), received a single intramuscular (IM) dose of MenACYW Conjugate vaccine, at Day 0 in the present study (MET59).
Group 2: MenACYW Conjugate vaccine (Menveo Vaccine-primed)EXPERIMENTALParticipants who received a single dose of Menveo vaccine in previous study MET50 or outside of Sanofi Pasteur trials, received a single IM dose of MenACYW Conjugate vaccine, at Day 0 in the present study (MET59).
Group 3: MenACYW Conjugate vaccine + Trumenba vaccineEXPERIMENTALParticipants who received a single dose of MenACYW Conjugate vaccine in previous studies MET50 or MET43, received a single IM dose of MenACYW Conjugate vaccine, concomitantly with 1 dose of Trumenba vaccine at Day 0 in the present study (MET59).
Group 4: MenACYW Conjugate vaccine + Bexsero vaccineEXPERIMENTALParticipants who received a single dose of MenACYW Conjugate vaccine in previous studies MET50 or MET43, received a single IM dose of MenACYW Conjugate vaccine, concomitantly with 1 dose of Bexsero vaccine at Day 0 in the present study (MET59).
Group 1: MenACYW Conjugate Vaccine + Bexsero® (2, 4, and 12 to 13 Months)EXPERIMENTALParticipants aged 2 months (at the time of enrollment) received MenACYW Conjugate vaccine at 3 months and at 12 to 13 months of age, Bexsero® at 2, 4, and 12 to 13 months of age along with Infanrix hexa® vaccine at 2, 3, and 4 months of age; Rotarix® vaccine at 2 and 3 months of age; and Prevenar 13® vaccine at 2 and 4 months of age.
Group 2: MenACYW Conjugate Vaccine + Bexsero® (2 and 4 Months)EXPERIMENTALParticipants aged 2 months (at the time of enrollment) received MenACYW Conjugate vaccine at 3 months and at 12 to 13 months of age, Bexsero® at 2 and 4 months of age along with Infanrix hexa® vaccine at 2, 3, and 4 months of age; Rotarix® vaccine at 2 and 3 months of age; and Prevenar 13® vaccine at 2 and 4 months of age.
Group 3: Bexsero® (2, 4, and 12 to 13 Months)ACTIVE_COMPARATORParticipants aged 2 months (at the time of enrollment) received Bexsero® at 2, 4, and 12 to 13 months of age along with Infanrix hexa® vaccine at 2, 3, and 4 months of age; Rotarix® vaccine at 2 and 3 months of age; and Prevenar 13® vaccine at 2 and 4 months of age.

Interventions

NameTypeDescription
Meningococcal polysaccharide (serogroups A, C, Y, and W) tetanus toxoid Conjugate vaccine MenACYW Conjugate vaccineBIOLOGICALPharmaceutical form: Solution for injection Route of administration: IM
Meningococcal Group B vaccine (Trumenba®)BIOLOGICALPharmaceutical form: Suspension for injection in pre-filled syringe Route of administration: IM
Meningococcal group B vaccine (Bexsero®)BIOLOGICALPharmaceutical form: Suspension for injection in pre-filled syringe Route of administration: IM
Meningococcal polysaccharide (serogroups A,C,Y and W) tetanus toxoid Conjugate vaccineBIOLOGICALPharmaceutical form: solution for injection; route of administration: intramuscular, 0.5 mL
Meningococcal group B vaccineBIOLOGICALPharmaceutical form: suspension for injection; route of administration: deep intramuscular, 0.5 mL
Diphtheria, tetanus, pertussis (acellular component), hepatitis B, poliomyelitis (inactivated) vaccineBIOLOGICALPharmaceutical form: powder and suspension for suspension injection; route of administration: deep intramuscular, 0.5 mL
Human rotavirus RIX4414 strain vaccineBIOLOGICALPharmaceutical form: oral suspension; route of administration: oral, 1.5 mL
Pneumococcal 13-valent polysaccharide conjugate vaccineBIOLOGICALPharmaceutical form: suspension for injection; route of administration: intramuscular, 0.5 mL
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Eligibility Criteria

Age Range13 Years to 26 Years
SexALL
Healthy VolunteersYes
Study Sites30

Inclusion criteria : * Aged \>= 13 to less than (\<) 26 years on the day of inclusion. * Participants participated in and completed study MET50 (MET50 Groups 1, 2, or 3 only) or study MET43 (MET43 Groups 1, 2, or 3 only). * For MET59 Group 2 only (Menveo vaccine-primed participants only; enrichment...

Countries:United StatesPuerto RicoUnited Kingdom
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Frequently asked questions about Meningococcal Group B vaccine

What is Meningococcal Group B vaccine used for?

Meningococcal Group B vaccine is used for meningococcal immunisation in healthy volunteers and for preventing meningococcal infection. It is being studied in healthy volunteers, including infants, toddlers, and adolescents, to evaluate immune responses and safety when administered alone or with other vaccines.

Who makes Meningococcal Group B vaccine?

Sanofi (ticker: SNY) is developing Meningococcal Group B vaccine. The vaccine is currently in Phase 3 clinical development for meningococcal immunisation in healthy volunteers.

What phase is Meningococcal Group B vaccine in?

Meningococcal Group B vaccine is in Phase 3 clinical development. It is investigational and not yet approved. Two Phase 3 trials have been completed, studying the vaccine in healthy volunteers for meningococcal immunisation.

What clinical trials is Meningococcal Group B vaccine in?

Meningococcal Group B vaccine has been studied in two completed Phase 3 trials. NCT03632720 evaluated a quadrivalent meningococcal conjugate vaccine in infants and toddlers in the United Kingdom. NCT04084769 evaluated a booster dose of a quadrivalent meningococcal conjugate vaccine in adolescents in the United States and Puerto Rico.

Is Meningococcal Group B vaccine the same as a quadrivalent meningococcal conjugate vaccine?

Meningococcal Group B vaccine is being studied alongside quadrivalent meningococcal conjugate vaccines. The clinical trials NCT03632720 and NCT04084769 involve quadrivalent meningococcal conjugate vaccines, and the Group B vaccine is evaluated for concomitant use or comparison in these studies.