Recent Updates
Recently added Catalysts

MenABCWY

Phase 3

Meningococcal Vaccine | Monoclonal antibody | Other |Pfizer, Inc.|Last Updated: Apr 27, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
Premium
Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
Premium
Trial Design
RandomizedDouble-BlindCONTROLLEDDMC
Total Trials3
Total Enrollment4,350
FDA Designations
No designations recorded
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04440163MenABCWY Noninferiority Study in Healthy Participants ≥10 to <26 Years of AgePHASE3 COMPLETED 2,431Jun 17, 2020Jul 24, 2022Apr 18, 202378 United States, Czechia +3
NCT03135834A Trial to Describe the Immunogenicity and Safety of 2 Doses of Bivalent rLP2086 (Trumenba) and a Pentavalent Meningococcal Vaccine in Healthy Subjects >=10 to <26 Years of Age.PHASE3 COMPLETED 1,610Apr 24, 2017Oct 25, 2022Aug 8, 202375 United States, Czechia +2
NCT04440176A Trial to Describe the Safety and Immunogenicity of MenABCWY When Administered on 2 SchedulesPHASE2 COMPLETED 309Jun 17, 2020Jan 5, 2024Apr 27, 202620 United States
Unlock Drug Trial Details
Study Endpoints
Primary Endpoints
Percentage of Participants Achieving At Least 4-Fold Rise in Serum Bactericidal Assay Using Human Complement (hSBA) Titer From Baseline for Each MenACWY Strains: 1 Month After Vaccination 2 in Group 1 Compared to 1 Month After Vaccination 1 in Group 2
Baseline (pre-vaccination on Day 1), 1 month after Vaccination 2 in Group 1 and 1 month after Vaccination 1 in Group 2

4-fold increase was defined as: 1) for participants with baseline hSBA titer below limit of detection (LOD) (or hSBA titer less than \[\<\] 1:4), 4-fold rise was defined as hSBA titer greater than or equal to (\>=) 1:16; 2) baseline hSBA titer \>=LOD and \< lower limit of quantitation (LLOQ) (i.e. hSBA titer of 1:8), 4-fold rise was defined as hSBA titer \>=4 times LLOQ; 3) baseline hSBA titer \>=LLOQ, 4-fold rise was defined as hSBA titer \>=4 times baseline titer. Exact 2-sided confidence interval (CI) using Clopper and Pearson method was presented. Analysis was performed on post-vaccination (PV) 1 evaluable immunogenicity population (EIP) for Group 2 and PV2 evaluable immunogenicity population for Group 1. Here, 'Overall Number of Participants Analyzed' represented as 'N' and 'Number Analyzed' represented as 'n'.

Percentage of Participants Achieving At Least 4-Fold Rise in hSBA Titer From Baseline for Each of the MenACWY Strains: 1 Month After Vaccination 2 in Group 3 Compared to 1 Month After Vaccination 1 in Group 4
Baseline (pre-vaccination on Day 1), 1 month after Vaccination 2 in Group 3 and 1 month after Vaccination 1 in Group 4

4-fold increase was defined as: 1) for participants with baseline hSBA titer below LOD (or hSBA titer \<1:4), 4-fold rise was defined as hSBA titer \>=1:16; 2) baseline hSBA titer \>=LOD (i.e., hSBA titer of \>=1:4) and \< LLOQ (i.e., hSBA titer of 1:8), 4-fold rise was defined as hSBA titer \>=4times LLOQ; 3) baseline hSBA titer \>=LLOQ, 4-fold rise was defined as hSBA titer \>=4 times baseline titer. Exact 2-sided CI using Clopper and Pearson method was presented. Here, 'Overall Number of Participants Analyzed' represented as 'N' and 'Number Analyzed' represented as 'n'.

Percentage of Participants Achieving hSBA Titer Greater Than or Equal to (>=) LLOQ for All Primary Neisseria Meningitidis Group B (MenB) Test Strains Combined (Composite Response): Groups 1 and 3 Combined Versus Groups 2 and 4 Combined
1 month after Vaccination 2

Percentage of participants achieving hSBA titer \>= LLOQ (1:16 for strain A22 and 1:8 for strains A56, B24, and B44) for all MenB test strains (A22, A56, B24 and B44) combined were reported in this outcome measure. Exact 2-sided CI using the Clopper and Pearson method was presented.

Percentage of Participants Achieving At Least a 4-Fold Rise in hSBA Titer From Baseline For Each Primary MenB Test Strains at 1 Month After Vaccination 2: Groups 1 and 3 Combined Versus Groups 2 and 4 Combined
Baseline (pre-vaccination on Day 1), 1 month after Vaccination 2

Percentage of participants achieving at least a 4-fold rise in hSBA titer for each primary MenB test strains (A22, A56, B24 and B44) were reported in this outcome measure. Exact 2-sided CI using the Clopper and Pearson method was presented.

Percentage of Participants With Local Reactions Within 7 Days After Vaccination 1: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 7 days after Vaccination 1

Local reactions included pain at injection site, redness and swelling and were recorded by participants in an electronic diary (e-diary). Redness and swelling were measured and recorded in caliper units. 1 caliper unit =0.5 centimeter (cm) and graded as mild: \>2.0 to 5.0 cm, moderate: \>5.0 to 10.0 cm and severe: \>10.0 cm. Pain at injection site was graded as mild: did not interfere with daily activity, moderate: interfered with daily activity and severe: prevented daily activity. Percentage of participants with local reactions at injection site were reported in this outcome measure. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With Local Reactions Within 7 Days After Vaccination 2: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 7 days after Vaccination 2

Local reactions included pain at injection site, redness and swelling and were recorded by participants in an e-diary. Redness and swelling were measured and recorded in caliper units. 1 caliper unit =0.5 cm and graded as mild: \>2.0 to 5.0 cm, moderate: \>5.0 to 10.0 cm and severe: \>10.0 cm. Pain at injection site was graded as mild: did not interfere with daily activity, moderate: interfered with daily activity and severe: prevented daily activity. Percentage of participants with local reactions at injection site were reported in this outcome measure. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With Systemic Events Within 7 Days After Vaccination 1: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 7 days after Vaccination 1

Systemic events were recorded by participants in e-diary. Fever was defined as temperature \>=38.0 degrees (deg) Celsius (C) and was categorized as 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, muscle pain and joint pain were graded as mild: did not interfere with activity, moderate: some interference with activity and severe: prevented daily routine activity. Vomiting was graded as mild: 1 to 2 times in 24 hours(h), moderate: \>2 times in 24h and severe: required intravenous hydration. Diarrhea was graded as mild: 2 to 3 loose stools in 24h, moderate: 4 to 5 loose stools in 24h and severe: 6 or more loose stools in 24h. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With Systemic Events Within 7 Days After Vaccination 2: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 7 days after Vaccination 2

Systemic events were recorded by participants in e-diary. Fever was defined as temperature \>=38.0 deg C and was categorized as 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, muscle pain and joint pain were graded as mild: did not interfere with activity, moderate: some interference with activity and severe: prevented daily routine activity. Vomiting was graded as mild: 1 to 2 times in 24h, moderate: \>2 times in 24h and severe: required intravenous hydration. Diarrhea was graded as mild: 2 to 3 loose stools in 24h, moderate: 4 to 5 loose stools in 24h and severe: 6 or more loose stools in 24h. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With Use of Antipyretic Medication Within 7 Days After Vaccination 1: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 7 days after Vaccination 1

The use of antipyretic medication was recorded by participants in an e-diary for 7 days after vaccination. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With Use of Antipyretic Medication Within 7 Days After Vaccination 2: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 7 days after Vaccination 2

The use of antipyretic medication recorded by participants in an e-diary for 7 days after vaccination. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With Adverse Events (AEs) Within 30 Days After Vaccination 1: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after Vaccination 1

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. Exact 2-sided CI was based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

Percentage of Participants With AEs Within 30 Days After Vaccination 2: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after Vaccination 2

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. Exact 2-sided CI was based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

Percentage of Participants With AEs Within 30 Days After Any Vaccination: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after any vaccination

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. Exact 2-sided CI was based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

Percentage of Participants With AEs During Vaccination Phase: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From day of Vaccination 1 (Day 1) up to 1 month after Vaccination 2 (approximately 7 months)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. Exact 2-sided CI was based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

Percentage of Participants With Serious Adverse Events (SAEs) Within 30 Days After Vaccination 1: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after Vaccination 1

An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With SAEs Within 30 Days After Vaccination 2: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after Vaccination 2

An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With SAEs Within 30 Days After Any Vaccination: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after any vaccination

An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent disability/ incapacity; congenital anomaly/birth defect and other important medical events. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With SAEs During Vaccination Phase: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From day of Vaccination 1 (Day 1) up to 1 month after Vaccination 2 (approximately 7 months)

An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent disability/ incapacity; congenital anomaly/birth defect and other important medical events. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With SAEs During Follow-up Phase: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From 1 month after Vaccination 2 up to 6 months after Vaccination 2 (approximately 5 months)

An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent disability/ incapacity; congenital anomaly/birth defect and other important medical events. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With SAEs Throughout the Study: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From day of Vaccination 1 (Day 1) up to 6 months after Vaccination 2 (approximately 12 months)

An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent disability/ incapacity; congenital anomaly/birth defect and other important medical events. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With Medically Attended Adverse Events (MAEs) Within 30 Days After Vaccination 1: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after Vaccination 1

MAE was defined as a non-serious AE that resulted in an evaluation at a medical facility. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With MAEs Within 30 Days After Vaccination 2: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after Vaccination 2

MAE was defined as a non-serious AE that resulted in an evaluation at a medical facility. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With MAEs Within 30 Days After Any Vaccination: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after any vaccination

MAE was defined as a non-serious AE that resulted in an evaluation at a medical facility. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With MAEs During Vaccination Phase: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From day of Vaccination 1 (Day 1) up to 1 month after Vaccination 2 (approximately 7 months)

MAE was defined as a non-serious AE that resulted in an evaluation at a medical facility. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With MAEs During Follow-up Phase: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From 1 month after Vaccination 2 up to 6 months after Vaccination 2 (approximately 5 months)

MAE was defined as a non-serious AE that resulted in an evaluation at a medical facility. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With MAEs Throughout the Study: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From day of Vaccination 1 (Day 1) up to 6 months after Vaccination 2 (approximately 12 months)

MAE was defined as a non-serious AE that resulted in an evaluation at a medical facility. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With Newly Diagnosed Chronic Medical Condition (NDCMC) Within 30 Days After Vaccination 1: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after Vaccination 1

An NDCMC was defined as a disease or medical condition, not previously identified, that is expected to be persistent or otherwise long-lasting in its effects. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With NDCMC Within 30 Days After Vaccination 2: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 days after Vaccination 2

An NDCMC was defined as a disease or medical condition, not previously identified, that is expected to be persistent or otherwise long-lasting in its effects. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With NDCMC Within 30 Days After Any Vaccination: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 Days after any vaccination

An NDCMC was defined as a disease or medical condition, not previously identified, that is expected to be persistent or otherwise long-lasting in its effects. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With NDCMC During Vaccination Phase: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From day of Vaccination 1 (Day 1) up to 1 month after Vaccination 2 (approximately 7 months)

An NDCMC was defined as a disease or medical condition, not previously identified, that is expected to be persistent or otherwise long-lasting in its effects. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With NDCMC During Follow-up Phase: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From 1 month after Vaccination 2 up to 6 months after Vaccination 2 (approximately 5 months)

An NDCMC was defined as a disease or medical condition, not previously identified, that is expected to be persistent or otherwise long-lasting in its effects. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With NDCMC Throughout the Study: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From day of Vaccination 1 (Day 1) up to 6 months after Vaccination 2 (approximately 12 months)

An NDCMC was defined as a disease or medical condition, not previously identified, that is expected to be persistent or otherwise long-lasting in its effects. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With Immediate AE Within 30 Minutes After Vaccination 1: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 minutes after Vaccination 1

Immediate AEs were defined as AEs occurring within the first 30 minutes after investigational product administration. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants With Immediate AE Within 30 Minutes After Vaccination 2: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
Within 30 minutes after Vaccination 2

Immediate AEs were defined as AEs occurring within the first 30 minutes after investigational product administration. Exact 2-sided CI was based on the Clopper and Pearson method.

Percentage of Participants Who Missed Days of School or Work Due to AEs During Vaccination Phase: By MenABCWY Group (Groups 1, 3, 5, and 7 Combined) and Trumenba Group (Groups 2, 4, 6, and 8 Combined)
From day of Vaccination 1 (Day 1) up to 1 month after Vaccination 2 (approximately 7 months)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. Percentage of participants who missed days of school or work due to AEs during vaccination phase were reported in this outcome measure.

Stage1: Percentage of Participants Achieving Serum Bactericidal Assay Using Human Complement (hSBA) Titer Level >= Lower Limit of Quantitation (LLOQ) for All 4 Primary Test Strains Combined 1 Month After Vaccination 2 (Group 2 and 4 Combined)
1 month after Vaccination 2

Percentage of participants who achieved an hSBA titer \>= LLOQ for all 4 primary MenB test strains combined (LLOQ was 1:16 for A22 and 1:8 for A56, B24, and B44) was reported in this outcome. Analysis for this outcome measure was planned for combined Group 2 and 4.

Stage1: Percentage of Participants With Fold Rise >=4 in hSBA for Each of the 4 Primary MenB Test Strains From Baseline to 1 Month After Vaccination 2 (Group 2 and 4 Combined)
From Baseline (blood draw prior to Vaccination 1) to 1 month after Vaccination 2

The 4-fold increase: a) participants with baseline hSBA titer below limit of detection (LOD or an hSBA titer \<1:4), response was defined as hSBA titer \>=1:16 or LLOQ (whichever titer is higher); b) Participants with baseline hSBA titer \>= LOD and \< LLOQ, response was defined as hSBA titer \>= 4 times the LLOQ; c) participants with baseline hSBA titer \>= LLOQ, response was defined as hSBA titer \>=4 times baseline titer. Four primary MenB test strains were PMB80 (A22), PMB2001 (A56), PMB2948 (B24) and PMB2707 (B44). Analysis for this outcome measure was planned for combined Group 2 and 4.

Stage1: Percentage of Participants With Local Reactions Within 7 Days After Vaccination 1 (Group 2 and 4 Combined)
7 days after Vaccination 1

Local reactions (redness, swelling, and pain) at the site of investigational product administration were recorded in e-diary. Redness and swelling were measured and recorded in caliper units. Each caliper unit represented 0.5 cm. Redness and swelling were graded as mild (\>2.0 to 5.0 cm), moderate (\>5.0 to 10.0 cm) and severe (\>10.0 cm). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), and severe (prevented daily activity).

Stage1: Percentage of Participants With Local Reactions Within 7 Days After Vaccination 2 (Group 2 and 4 Combined)
7 days after Vaccination 2

Local reactions (redness, swelling, and pain) at the site of investigational product administration were recorded in e-diary. Redness and swelling were measured and recorded in caliper units. Each caliper unit represented 0.5 cm. Redness and swelling were graded as mild (\>2.0 to 5.0 cm), moderate (\>5.0 to 10.0 cm) and severe (\>10.0 cm). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), and severe (prevented daily activity).

Stage1: Percentage of Participants With Systemic Events Within 7 Days After Vaccination 1 (Group 2 and 4 Combined)
7 days after Vaccination 1

Systemic events fever, vomiting, diarrhea, headache, fatigue, chills, muscle pain other than muscle pain at the injection site, and joint pain were recorded by using an e-diary. Fever was defined as \>=38.0 degree Celsius (C) and categorized to 38.0 to 38.4 degree C, 38.5 to 38.9 degree C, 39.0 to 40.0 degree C and \>40.0 degree C. Headache, fatigue, chills, muscle pain and joint pain were graded as mild (did not interfere with activity), moderate (some interference with activity) and severe (prevented daily activity). Vomiting was graded as mild (1-2 times in 24 hours), moderate (\>2 times in 24 hours) and severe (required IV hydration). Diarrhea was graded as mild (2-3 loose stools in 24 hours), moderate (4-5 loose stools in 24 hours) and severe (\>=6 in 24 hours).

Stage1: Percentage of Participants With Systemic Events Within 7 Days After Vaccination 2 (Group 2 and 4 Combined)
7 days after Vaccination 2

Systemic events fever, vomiting, diarrhea, headache, fatigue, chills, muscle pain other than muscle pain at the injection site, and joint pain were recorded by using an e-diary. Fever was defined as \>=38.0 degree C and categorized to 38.0 to 38.4 degree C, 38.5 to 38.9 degree C, 39.0 to 40.0 degree C and \>40.0 degree C. Headache, fatigue, chills, muscle pain and joint pain were graded as mild (did not interfere with activity), moderate (some interference with activity) and severe (prevented daily activity). Vomiting was graded as mild (1-2 times in 24 hours), moderate (\>2 times in 24 hours) and severe (required IV hydration). Diarrhea was graded as mild (2-3 loose stools in 24 hours), moderate (4-5 loose stools in 24 hours) and severe (\>=6 in 24 hours).

Stage1: Percentage of Participants With Antipyretic Medication Use Within 7 Days After Vaccination 1 (Group 2 and 4 Combined)
7 days after Vaccination 1
Stage1: Percentage of Participants With Antipyretic Medication Use Within 7 Days After Vaccination 2 (Group 2 and 4 Combined)
7 days after Vaccination 2
Stage1: Percentage of Participants With at Least 1 Serious Adverse Event (SAE) Within 30 Days After Vaccination 1 (Group 2 and 4 Combined)
30 days after Vaccination 1

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening (immediate risk of death), required hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions), resulted in congenital anomaly/birth defect. Or that was considered to be an important medical event.

Stage1: Percentage of Participants With at Least 1 Serious Adverse Event (SAE) Within 30 Days After Vaccination 2 (Group 2 and 4 Combined)
30 days after Vaccination 2

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening (immediate risk of death), required hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions), resulted in congenital anomaly/birth defect. Or that was considered to be an important medical event.

Stage1: Percentage of Participants With at Least 1 SAE Within 30 Days After Any Vaccination (Group 2 and 4 Combined)
30 days after any vaccination

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening (immediate risk of death), required hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions), resulted in congenital anomaly/birth defect. Or that was considered to be an important medical event.

Stage1: Percentage of Participants With at Least 1 SAE During the Stage 1 Vaccination Phase (Group 2 and 4 Combined)
Stage 1 Vaccination Phase: From Vaccination 1 through 1 month after Vaccination 2 (7 Months)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening (immediate risk of death), required hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions), resulted in congenital anomaly/birth defect. Or that was considered to be an important medical event.

Stage1: Percentage of Participants With at Least 1 SAE During the Stage 1 Follow-up Phase (Group 2 and 4 Combined)
Stage 1 Follow-up phase: From 1 month after Vaccination 2 through 6 months after Vaccination 2 (5 Months)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening (immediate risk of death), required hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions), resulted in congenital anomaly/birth defect. Or that was considered to be an important medical event. There was one participant who did not meet criteria for Stage 1 follow-up safety population. The subject's SAE happened in the follow-up phase but was not included in the follow-up safety population for Stage 1 (but in the safety population for Stage 1). Therefore, the SAE was not included in the follow-up table but in the broadly defined throughout Stage 1 table.

Stage1: Percentage of Participants With at Least 1 SAE Throughout the Stage 1 (Group 2 and 4 Combined)
Throughout Stage 1: From the Vaccination 1 through 6 months after Vaccination 2 (12 Months)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening (immediate risk of death), required hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions), resulted in congenital anomaly/birth defect. Or that was considered to be an important medical event. There was one participant who did not meet criteria for Stage 1 follow-up safety population. The subject's SAE happened in the follow-up phase but was not included in the follow-up safety population for Stage 1 (but in the safety population for Stage 1). Therefore, the SAE was not included in the follow-up table but in the broadly defined throughout Stage 1 table.

Stage1: Percentage of Participants With at Least 1 Medically Attended AE Within 30 Days After Vaccination 1 (Group 2 and 4 Combined)
30 days after Vaccination 1

Medically attended AE was defined as a nonserious AE that resulted in an evaluation at a medical facility.

Stage1: Percentage of Participants With at Least 1 Medically Attended AE Within 30 Days After Vaccination 2 (Group 2 and 4 Combined)
30 days after Vaccination 2

Medically attended AE was defined as a nonserious AE that resulted in an evaluation at a medical facility.

Stage1: Percentage of Participants With at Least 1 Medically Attended AE Within 30 Days After Any Vaccination (Group 2 and 4 Combined)
30 days after any vaccination

Medically attended AE was defined as a nonserious AE that resulted in an evaluation at a medical facility.

Stage1: Percentage of Participants With at Least 1 Medically Attended AE During the Stage 1 Vaccination Phase (Group 2 and 4 Combined)
Stage 1 Vaccination Phase: From Vaccination 1 through 1 month after Vaccination 2 (7 Months)

Medically attended AE was defined as a nonserious AE that resulted in an evaluation at a medical facility.

Stage1: Percentage of Participants With at Least 1 Medically Attended AE During the Stage 1 Follow-up Phase (Group 2 and 4 Combined)
Stage 1 Follow-up phase: From 1 month after Vaccination 2 through 6 months after Vaccination 2 (5 Months)

Medically attended AE was defined as a nonserious AE that resulted in an evaluation at a medical facility.

Stage1: Percentage of Participants With at Least 1 Medically Attended AE Throughout the Stage 1 (Group 2 and 4 Combined)
Throughout Stage 1: From the Vaccination 1 through 6 months after Vaccination 2 (12 Months)

Medically attended AE was defined as a nonserious AE that resulted in an evaluation at a medical facility.

Stage1: Percentage of Participants With at Least 1 Newly Diagnosed Chronic Medical Condition (NDCMC) Within 30 Days After Vaccination 1 (Group 2 and 4 Combined)
30 days after Vaccination 1

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Stage1: Percentage of Participants With at Least 1 Newly Diagnosed Chronic Medical Condition (NDCMC) Within 30 Days After Vaccination 2 (Group 2 and 4 Combined)
30 days after Vaccination 2

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Stage1: Percentage of Participants With at Least 1 Newly Diagnosed Chronic Medical Condition (NDCMC) Within 30 Days After Any Vaccination (Group 2 and 4 Combined)
30 days after any Vaccination

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Stage1: Percentage of Participants With at Least 1 Newly Diagnosed Chronic Medical Condition (NDCMC) During the Stage 1 Vaccination Phase (Group 2 and 4 Combined)
Stage 1 Vaccination Phase: From Vaccination 1 through 1 month after Vaccination 2 (7 Months)

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Stage1: Percentage of Participants With at Least 1 Newly Diagnosed Chronic Medical Condition (NDCMC) During the Stage 1 Follow-up Phase (Group 2 and 4 Combined)
Stage 1 Follow-up phase: From 1 month after Vaccination 2 through 6 months after Vaccination 2 (5 Months)

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Stage1: Percentage of Participants With at Least 1 Newly Diagnosed Chronic Medical Condition (NDCMC) Throughout the Stage 1 (Group 2 and 4)
Throughout Stage 1: From the Vaccination 1 through 6 months after Vaccination 2 (12 Months)

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Stage1: Percentage of Participants With at Least 1 AE Within 30 Days After Vaccination 1 (Group 2 and 4 Combined)
30 days after Vaccination 1

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. AEs did not include local reaction and systemic events collected by systematic approach.

Stage1: Percentage of Participants With at Least 1 AE Within 30 Days After Vaccination 2 (Group 2 and 4 Combined)
30 days after Vaccination 2

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. AEs did not include local reaction and systemic events collected by systematic approach.

Stage1: Percentage of Participants With at Least 1 AE Within 30 Days After Any Vaccination (Group 2 and 4 Combined)
30 days after any vaccination

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. AEs did not include local reaction and systemic events collected by systematic approach.

Stage1: Percentage of Participants With at Least 1 AE During Vaccination Phase (Group 2 and 4 Combined)
Stage 1 Vaccination Phase: From Vaccination 1 through 1 month after Vaccination 2 (7 Months)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. AEs did not include local reaction and systemic events collected by systematic approach.

Stage1: Percentage of Participants With at Least 1 Immediate AE After Vaccination 1 (Group 2 and 4 Combined)
30 minutes after Vaccination 1

Immediate AE was defined as AE occurring within the first 30 minutes after investigational product administration.

Stage1: Percentage of Participants With at Least 1 Immediate AE After Vaccination 2 (Group 2 and 4 Combined)
30 minutes after Vaccination 2

Immediate AE was defined as AE occurring within the first 30 minutes after investigational product administration.

Stage1: Number of Participants Who Missed School/Work Due to AE During the Stage 1 Vaccination Phase (Group 2 and 4 Combined)
Stage 1 Vaccination Phase: From Vaccination 1 through 1 month after Vaccination 2 (7 Months)
Stage2: Percentage of Participants With Local Reactions Within 7 Days After Booster Vaccination: Group 1 Through Group 4
7 days after booster vaccination

Local reactions (redness, swelling, and pain) at the site of investigational product administration were recorded in e-diary. Redness and swelling were measured and recorded in caliper units. Each caliper unit represented 0.5 cm. Redness and swelling were graded as mild (\>2.0 to 5.0 cm), moderate (\>5.0 to 10.0 cm) and severe (\>10.0 cm). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), and severe (prevented daily activity).

Stage2: Percentage of Participants With Systemic Events Within 7 Days After Booster Vaccination: Group 1 Through Group 4
7 days after booster vaccination

Systemic events fever, vomiting, diarrhea, headache, fatigue, chills, muscle pain and joint pain were recorded in an e-diary. Fever was defined as \>=38.0 degree Celsius (C) and categorized to 38.0 to 38.4 degree C, 38.5 to 38.9 degree C, 39.0 to 40.0 degree C and \>40.0 degree C. Headache, fatigue, chills, muscle pain and joint pain were graded as mild (did not interfere with activity), moderate (some interference with activity) and severe (prevented daily activity). Vomiting was graded as mild (1-2 times in 24 hours), moderate (\>2 times in 24 hours) and severe (required IV hydration). Diarrhea was graded as mild (2-3 loose stools in 24 hours), moderate (4-5 loose stools in 24 hours) and severe (\>=6 in 24 hours).

Stage2: Percentage of Participants With Antipyretic Medication Use Within 7 Days After Booster Vaccination: Group 1 Through Group 4
7 days after booster vaccination
Stage2: Percentage of Participants With at Least 1 SAE During Booster Vaccination Phase: Group 1 Through Group 4
Booster vaccination phase: From booster vaccination through 1 month after booster vaccination

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening (immediate risk of death), required hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions), resulted in congenital anomaly/birth defect. Or that was considered to be an important medical event. SAE of "pregnancy" for one participant during the booster vaccination phase was recorded erroneously and hence it was included in results of Group 4.

Stage2: Percentage of Participants With at Least 1 SAE During the Booster Follow-up Phase: Group 1 Through Group 4
Booster follow-up phase: From 1 month after booster vaccination through 6 months after booster vaccination (up to 5 months)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening (immediate risk of death), required hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions), resulted in congenital anomaly/birth defect. Or that was considered to be an important medical event.

Stage2: Percentage of Participants With at Least 1 SAE Throughout Booster Phase: Group 1 Through Group 4
Throughout Booster phase: From booster vaccination through 6 months after booster vaccination

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening (immediate risk of death), required hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions), resulted in congenital anomaly/birth defect. Or that was considered to be an important medical event. SAE of "pregnancy" for one participant during the booster vaccination phase was recorded erroneously and hence it was reported in result of outcome measure 37 for Group 4. Subsequently correction was made by the trial site and not included in subsequent phase/results. Hence, that 1 participant is not included in results of Group 4 here.

Stage2: Percentage of Participants With at Least 1 Medically Attended AE During Booster Vaccination Phase: Group 1 Through Group 4
Booster vaccination phase: From booster vaccination through 1 month after booster vaccination

Medically attended AE was defined as a nonserious AE that resulted in an evaluation at a medical facility.

Stage2: Percentage of Participants With at Least 1 Medically Attended AE During the Booster Follow-up Phase: Group 1 Through Group 4
Booster Follow-up Phase: From 1 month after booster vaccination through 6 months after booster vaccination (up to 5 months)

Medically attended AE was defined as a nonserious AE that resulted in an evaluation at a medical facility.

Stage2: Percentage of Participants With at Least 1 Medically Attended AE Throughout Booster Phase: Group 1 Through Group 4
Throughout Booster Phase: From booster vaccination through 6 months after booster vaccination

Medically attended AE was defined as a nonserious AE that resulted in an evaluation at a medical facility.

Stage2: Percentage of Participants With at Least 1 NDCMC During Booster Vaccination Phase: Group 1 Through Group 4
Booster Vaccination Phase: From booster vaccination through 1 month after booster vaccination

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Stage2: Percentage of Participants With at Least 1 NDCMC During the Booster Follow-up Phase: Group 1 Through Group 4
Booster Follow-up Phase: From 1 month after booster vaccination through 6 months after booster vaccination (up to 5 months)

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Stage2: Percentage of Participants With at Least 1 NDCMC Throughout Booster Phase: Group 1 Through Group 4
Throughout Booster Phase: From booster vaccination through 6 months after booster vaccination

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Stage2: Percentage of Participants With at Least 1 AE During Booster Vaccination Phase: Group 1 Through Group 4
Booster Vaccination Phase: From booster vaccination through 1 month after booster vaccination

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. AEs did not include local reaction and systemic events collected by systematic approach.

Stage2: Percentage of Participants With at Least 1 Immediate AE After Booster Vaccination: Group 1 Through Group 4
30 minutes after booster vaccination

Immediate AE was defined as AE occurring within the first 30 minutes after investigational product administration.

Stage2: Number of Participants Who Missed School/Work Due to AE After Booster Vaccination: Group 1 Through Group 4
Booster Vaccination Phase: From booster vaccination through 1 month after booster vaccination
Percentage of Participants With Serum Bactericidal Assay Using Human Complement (hSBA) Titer >=Lower Limit of Quantitation (LLOQ) for Each of the 4 Primary Neisseria Meningitidis Serogroup B (MenB) Test Strains at Baseline: 0 and 12 Month Schedule
Baseline (before vaccination 1)

Percentage of participants achieving hSBA titer \>=LLOQ (1:16 for strain A22 and 1:8 for strains A56, B24, and B44) for each of the 4 primary MenB test strains at baseline were reported in this outcome measure. Here, 'Post Vaccination 2 Evaluable Population'=PV2 EP and "Number analyzed" = number of participants evaluable at specific rows.

Percentage of Participants With hSBA Titer >=LLOQ for Each of the 4 Primary MenB Test Strains at 1 Month After Vaccination 2: 0 and 12 Month Schedule
1 month after vaccination 2 (second dose of MenABCWY)

Percentage of participants achieving hSBA titer \>=LLOQ (1:16 for strain A22 and 1:8 for strains A56, B24, and B44) for each of the 4 primary MenB test strains at 1 month after vaccination 2 in participants who received MenABCWY at Month 0 and Month 12 were reported in this outcome measure. "Number analyzed" = number of participants evaluable at specific rows.

Percentage of Participants With hSBA Titer >= LLOQ for Each of the 4 Primary MenB Test Strains at Baseline: 0 and 36 Month Schedule
Baseline (before vaccination 1)

Percentage of participants achieving hSBA titer \>=LLOQ (1:16 for strain A22 and 1:8 for strains A56, B24, and B44) for each of the 4 primary MenB test strains at baseline were reported in this outcome measure. "Number of Participants Analyzed"= number of participants evaluable for this outcome measure and "Number analyzed" = number of participants evaluable at specific rows.

Percentage of Participants With hSBA Titer >= LLOQ for Each of the 4 Primary MenB Test Strains at 1 Month After Vaccination 3: 0 and 36 Month Schedule
1 Month After Vaccination 3 (second dose of MenABCWY)

Percentage of participants achieving hSBA titer \>=LLOQ (1:16 for strain A22 and 1:8 for strains A56, B24, and B44) for each of the 4 primary MenB test strains at 1 month after vaccination 3 (second dose of MenABCWY) in participants who received MenABCWY at Month 0 and Month 36. "Number of Participants Analyzed"= number of participants evaluable for this outcome measure and "Number analyzed" = number of participants evaluable at specific rows.

Percentage of Participants Reporting Adverse Events (AEs) Within 30 Days After Vaccination 1: 0 and 12 Month Schedule
Within 30 days after vaccination 1 (first dose of MenABCWY)

An AE was defined as any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting AEs Within 30 Days After Vaccination 2: 0 and 12 Month Schedule
Within 30 days after vaccination 2 (second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting AEs Within 30 Days After Vaccination 1: 0 and 36 Month Schedule
Within 30 days after vaccination 1 (first dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting AEs Within 30 Days After Vaccination 2: 0 and 36 Month Schedule
Within 30 days after vaccination 2 (saline)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting AEs Within 30 Days After Vaccination 3: 0 and 36 Month Schedule
Within 30 days after vaccination 3 (second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting Serious Adverse Events (SAEs), Medically Attended Adverse Events (MAEs) and Newly Diagnosed Chronic Medical Condition (NDCMCs) Within 30 Days After Vaccination 1: 0 and 12 Month Schedule
Within 30 days after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a non-serious AE (other than serious AE) that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs Within 30 Days After Vaccination 2: 0 and 12 Month Schedule
Within 30 days after vaccination 2 (Second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs Within 30 Days After Vaccination 1: 0 and 36 Month Schedule
Within 30 days after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs Within 30 Days After Vaccination 2: 0 and 36 Month Schedule
Within 30 days after vaccination 2 (Saline)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs Within 30 Days After Vaccination 3: 0 and 36 Month Schedule
Within 30 days after vaccination 3 (Second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting AEs Within 30 Days After Any MenABCWY Vaccination: 0 and 12 Month Schedule
Within 30 Days after any MenABCWY vaccination

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting AEs Within 30 Days After Any MenABCWY Vaccination: 0 and 36 Month Schedule
Within 30 days after any MenABCWY vaccination

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs Within 30 Days After Any MenABCWY Vaccination: 0 and 12 Month Schedule
Within 30 days after any MenABCWY vaccination

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs Within 30 Days After Any MenABCWY Vaccination: 0 and 36 Month Schedule
Within 30 days after any MenABCWY vaccination

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting AEs From Vaccination 1 Through 1 Month After Vaccination 1: 0 and 12 Month Schedule
From vaccination 1 through 1 month after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting AEs From Vaccination 1 Through 1 Month After Vaccination 1: 0 and 36 Month Schedule
Vaccination 1 through 1 month after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From Vaccination 1 Through 1 Month After Vaccination 1: 0 and 12 Month Schedule
From vaccination 1 through 1 month after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From Vaccination 1 Through 1 Month After Vaccination 1: 0 and 36 Month Schedule
From vaccination 1 through 1 month after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting AEs From Vaccination 2 Through 1 Month After Vaccination 2: 0 and 12 Month Schedule
From vaccination 2 through 1 month after vaccination 2 (Second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting AEs From Vaccination 2 Through 1 Month After Vaccination 2: 0 and 36 Month Schedule
From vaccination 2 through 1 month after vaccination 2 (Saline)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From Vaccination 2 Through 1 Month After Vaccination 2: 0 and 12 Month Schedule
From vaccination 2 through 1 month after vaccination 2 (Second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From Vaccination 2 Through 1 Month After Vaccination 2: 0 and 36 Month Schedule
From vaccination 2 through 1 month after vaccination 2 (Saline)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting AEs From Vaccination 3 Through 1 Month After Vaccination 3: 0 and 36 Month Schedule
From vaccination 3 through 1 month after vaccination 3 (Second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. AEs included both serious and all non-serious adverse events.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From Vaccination 3 Through 1 Month After Vaccination 3: 0 and 36 Month Schedule
From vaccination 3 through 1 month after vaccination 3 (Second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From 1 Month After Vaccination 1 Through 6 Months After Vaccination 1: 0 and 12 Month Schedule
From 1 month after vaccination 1 through 6 months after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From 1 Month After Vaccination 1 Through 6 Months After Vaccination 1: 0 and 36 Month Schedule
From 1 month after vaccination 1 through 6 months after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From 1 Month After Vaccination 2 Through 6 Months After Vaccination 2: 0 and 12 Month Schedule
From 1 month after vaccination 2 through 6 months after vaccination 2 (Second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From 1 Month After Vaccination 2 Through 6 Months After Vaccination 2: 0 and 36 Month Schedule
From 1 month after vaccination 2 through 6 months after vaccination 2 (Saline)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From Vaccination 1 Through 6 Months After Vaccination 1: 0 and 12 Month Schedule
From vaccination 1 through 6 months after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From Vaccination 1 Through 6 Months After Vaccination 1: 0 and 36 Month Schedule
From vaccination 1 through 6 months after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From Vaccination 2 Through 6 Months After Vaccination 2: 0 and 12 Month Schedule
From vaccination 2 through 6 months after vaccination 2 (Second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting SAEs, MAEs and NDCMCs From Vaccination 2 Through 6 Months After Vaccination 2: 0 and 36 Month Schedule
From vaccination 2 through 6 months after vaccination 2 (Saline)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product. An SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life threatening; resulted in persistent disability/incapacity; congenital anomaly/birth defect and other important medical events. An MAE was defined as a nonserious AE that resulted in an evaluation at a medical facility. An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects.

Percentage of Participants Reporting at Least 1 Immediate AE After Vaccination 1: 0 and 12 Month Schedule
30 minutes after vaccination 1 (First dose of MenABCWY)

Immediate AEs were defined as AEs occurring within the first 30 minutes after study intervention administration.

Percentage of Participants Reporting at Least 1 Immediate AE After Vaccination 2: 0 and 12 Month Schedule
30 minutes after vaccination 2 (Second dose of MenABCWY)

Immediate AEs were defined as AEs occurring within the first 30 minutes after study intervention administration.

Percentage of Participants Reporting at Least 1 Immediate AE After Vaccination 1: 0 and 36 Month Schedule
30 minutes after vaccination 1 (First dose of MenABCWY)

Immediate AEs were defined as AEs occurring within the first 30 minutes after study intervention administration.

Percentage of Participants Reporting at Least 1 Immediate AE After Vaccination 2: 0 and 36 Month Schedule
30 minutes after vaccination 2 (Saline)

Immediate AEs were defined as AEs occurring within the first 30 minutes after study intervention administration.

Percentage of Participants Reporting at Least 1 Immediate AE After Vaccination 3: 0 and 36 Month Schedule
30 minutes after vaccination 3 (Second dose of MenABCWY)

Immediate AEs were defined as AEs occurring within the first 30 minutes after study intervention administration.

Percentage of Participants Who Missed School or Work Because of AEs Within 6 Months After Vaccination 1: 0 and 12 Month Schedule
Within 6 months after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product.

Percentage of Participants Who Missed School or Work Because of AEs Within 6 Months After Vaccination 1: 0 and 36 Month Schedule
Within 6 months after vaccination 1 (First dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product.

Percentage of Participants Who Missed School or Work Because of AEs Within 6 Months After Vaccination 2: 0 and 12 Month Schedule
Within 6 months after vaccination 2 (Second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product.

Percentage of Participants Who Missed School or Work Because of AEs Within 6 Months After Vaccination 2: 0 and 36 Month Schedule
Within 6 months after vaccination 2 (Saline)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product.

Percentage of Participants Who Missed School or Work Because of AEs Within 1 Month After Vaccination 3: 0 and 36 Month Schedule
Within 1 month after vaccination 3 (Second dose of MenABCWY)

An AE was any untoward medical occurrence in a participant, temporally associated with the use of investigational product, whether or not considered related to the investigational product.

Secondary Endpoints
Percentage of Participants Achieving At Least 4-Fold Rise in hSBA Titer From Baseline for Each MenACWY Test Strains: 1 Month After Vaccination 1 in Group 1 Compared to Group 2
Baseline (pre-vaccination on Day 1), 1 month after Vaccination 1
Percentage of Participants Achieving At Least 4-Fold Rise in hSBA Titer From Baseline for Each MenACWY Test Strains: 1 Month After Vaccination 1 in Group 3 Compared to Group 4
Baseline (pre-vaccination on Day 1), 1 month after Vaccination 1
Stage1: Percentage of Participants With hSBA Titer Level >= LLOQ for 4 Primary MenB Test Strains 1 Month After Vaccination 2 (Group 2 and 4 Combined)
1 month after Vaccination 2
Unlock Study Endpoints
Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelFACTORIAL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
1-Immuno Subset (ACWY Naive,MenABCWY/Saline)EXPERIMENTALACWY Naive subjects, MenABCWY/Saline
2-Immuno Subset (ACWY Naive, Trumenba/MenACWY-CRM)EXPERIMENTALACWY Naive subjects, Trumenba/MenACWY-CRM
3-Immuno Subset (ACWY Experienced,MenABCWY/Saline)EXPERIMENTALACWY Experienced subjects, MenABCWY/Saline
4-Immuno Subset (ACWY Experienced,Trumenba/MenACWY-CRM)EXPERIMENTALACWY Experienced subjects, Trumenba/MenACWY-CRM
5-Safety Subset (ACWY Naive,MenABCWY/Saline)EXPERIMENTALACWY Naive subjects, MenABCWY/Saline
6-Safety Subset (ACWY Naive,Trumenba/MenACWY-CRM)EXPERIMENTALACWY Naive subjects, Trumenba/MenACWY-CRM
7-Safety Subset (ACWY Experienced,MenABCWY/Saline)EXPERIMENTALACWY Experienced subjects, MenABCWY/Saline
8-Safety Subset (ACWY Experienced,Trumenba/MenACWY-CRM)EXPERIMENTALACWY Experienced subjects, Trumenba/MenACWY-CRM
Group 1 (ACWY Naive subjects, MenABCWY/Saline)EXPERIMENTALACWY Naive subjects, MenABCWY/Saline
Group 2 (ACWY Naive subjects, rLP2086/MenACWY-CRM)EXPERIMENTALACWY Naive subjects, rLP2086/MenACWY-CRM
Group 3 (ACWY Experienced subjects, MenABCWY/Saline)EXPERIMENTALACWY Experienced subjects, MenABCWY/Saline
Group 4 (ACWY Experienced subjects, rLP2086/MenACWY-CRM)EXPERIMENTALACWY Experienced subjects, rLP2086/MenACWY-CRM
Group 1 (MenABCWY 0-, 12-months)EXPERIMENTALMenABCWY administered at Month 0 and Month 12
Group 2 (MenABCWY 0-, 36-months)EXPERIMENTALMenABCWY administered at Month 0 and Month 36
Interventions
NameTypeDescription
MenABCWYBIOLOGICALN meningitidis groups A, B, C, W, and Y vaccine
SalineBIOLOGICALPlacebo
TrumenbaBIOLOGICALBivalent recombinant lipoprotein 2086 vaccine
MenACWY-CRMBIOLOGICALMeningococcal group A, C, W-135, and Y conjugate vaccine
rLP2086BIOLOGICALBivalent recombinant lipoprotein 2086 vaccine
Unlock Study Design Details
Eligibility Criteria
Age Range10 Years — 25 Years
SexALL
Healthy VolunteersYes
Study Sites78

Inclusion Criteria: * Male or female subject aged \>=10 and \<26 years at the time of randomization. * Healthy subject as determined by medical history, physical examination, and judgment of the investigator. * Negative urine pregnancy test for all female subjects. * ACWY-naïve participants: Partic...

Countries:United StatesCzechiaDenmarkHungaryPolandFinland
Unlock Eligibility Criteria
Recent Changes (Last 90 Days)
MEDIUMMay 28, 2026NCT04440176TRIAL_REMOVED: changed
MEDIUMMay 28, 2026NCT04440176TRIAL_REMOVED: changed