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Evaluation of Antibody Persistence Following 4 MenACWY Vaccinations

A Phase IV, Open-Label, Multi-Center Study to Evaluate the Safety and the 1-year Persistence of Antibody Response Among Children Who Received 4 Doses of the GSK MenACWY Conjugate Vaccine at 2, 4, 6 and 12 Months of Age in South Korea

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02446691
Enrollment
128
Registered
2015-05-18
Start date
2015-07-13
Completion date
2017-12-28
Last updated
2019-06-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infections, Meningococcal

Brief summary

This is Phase IV, Open label, Multicenter study. Subject's parents and/or legal guardian will be provided information about the trial. If interested and if eligible, they will then be asked to provide signed informed consent. The initial study visit can occur immediately after signed informed consent has been obtained. Approximately 135 subjects will be enrolled to receive 4 doses of intramuscular MenACWY vaccine at 2, 4, 6 and 12 months of age.

Interventions

BIOLOGICALMenACWY

Four Intramuscular doses of MenACWY vaccine at 2, 4, 6 and 12 months of age followed by two blood samples at 13 and 24 months of age.

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
2 Months to 24 Months
Healthy volunteers
Yes

Inclusion criteria

1. Healthy male and female 2 month-old infants (55 - 89 days) on the day of consent. 2. Infants whose parents or legal guardians have voluntary given written informed consent after the nature of the study has been explained according to local regulatory requirements, prior to study entry. 3. Infants whose parents or legal guardians can comply with study procedures including follow-up

Exclusion criteria

1. Previously received any meningococcal A, C, W and Y vaccines. 2. Previous confirmed or suspected disease caused by N. meningitidis or who have had household contact with and/or intimate exposure to an individual with laboratory confirmed N. meningitidis infection at any time since birth. 3. Progressive, unstable or uncontrolled clinical conditions. 4. A history of anaphylactic shock, asthma, urticaria or other allergic reaction after previous vaccinations or known hypersensitivity to any vaccine component, such as latex allergy. 5. Experienced significant acute or chronic infection within the previous 7 days or have experienced fever (temperature ≥ 38.0°C \[100.4°F\]) within the previous 3 days. 6. Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination. 7. Received treatment with systemic administration corticosteroids (PO/IV/IM) for more than 14 consecutive days from birth 8. Ever received blood, blood products and/or plasma derivatives or any parenteral immunoglobulin preparation (including Hepatitis B immune globulin) at any time since birth and for the full length of the study. 9. Any bleeding disorder which is considered as a contraindication to intramuscular injection or blood draw. 10. Any condition which, in the opinion of the investigator, might interfere with the results of the study or pose additional risk to the subject due to participation in the study. 11. Received or are planning to receive any investigational or non-registered medicinal product from birth and throughout the study. 12. Received oral or parenteral antibiotic treatment in the 3 days prior to the scheduled blood draw (topical antibiotics are acceptable, including antibiotic eye drops). 13. Relatives of site research staff working on this study.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 128 Against Each N.Meningitidis Serogroup at 24 Months of AgeAt 24 months of age (Visit 6)To assess antibody persistence against N. Meningitidis serogroups A, C, W and Y at 1 year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using rabbit serum complement
Number of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Within 30 minutes of each vaccinationSolicited signs and symptoms occurring within 30 minutes following each vaccination, include solicited local events (e.g. injection site erythema, induration and tenderness -threshold for Erythema and Induration: Type II- None \[\<10mm\], Any\[\>=10 mm\]), solicited systemic events (e.g. change in eating habits, sleepiness, irritability, vomiting, diarrhea, fever\[ body temperature \>=38°C measured preferably via tympanic route\]), and any other solicited event like use of analgesic/antipyretics for treatment or for prophylaxis
Number of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationFrom Day 1 to Day 7 after each vaccinationSolicited local AEs reported from day 1 to day 7 after each vaccination were assessed. Assessed local symptoms include injection site erythema, injection site induration and injection site tenderness. Any = incidence of a particular symptom regardless of intensity grade.Threshold for Erythema and Induration: Type II None (\<10 mm), Any (\>=10 mm)
Number of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.From Day 1 to Day 7 after each vaccinationSolicited systemic AEs reported from day 1 to day 7 after each vaccination were assessed. Assessed systemic symptoms include change in eating habits, sleepiness, irritability, vomiting, diarrhea and fever (body temperature ≥ 38°C (100.4°F)).
Number of Subjects With Any Medically Attended Unsolicited AEs and AEs Leading to Premature WithdrawalFrom Day 1 to Visit 6 (at 24 Months of age)An unsolicited adverse event is an adverse event that was not solicited using a Subject Diary and that was spontaneously communicated by a subject parent(s)/legal guardian(s)\] who has signed the informed consent. All medically attended unsolicited AEs were collected from Day 1 to Visit 6.
Number of Subjects With Serious AEs (SAEs)From Day 1 to Visit 6 (At 24 months of age)Subjects reporting SAEs from day 1 to visit 6 (at 24 months of age) were assessed. A serious adverse event (SAE) is defined as any untoward medical occurrence that at any dose results in one or more of the following: death, is life-threatening, required or prolonged hospitalization, persistent or significant disability/incapacity, congenital anomaly/or birth defect, An important and significant medical event that may not be immediately life threatening or resulting in death or hospitalization but, based upon appropriate medical judgment, may jeopardize the subject or may require intervention to prevent one of the other outcomes listed above.
Percentage of Subjects With Human Serum Bactericidal Assay (hSBA) Titers ≥ 8 Against Each N.Meningitidis Serogroup A,C,W and Y at 24 Months of Age.At 24 months of age (Visit 6)To assess antibody persistence against N. meningitidis serogroups A, C, W and Y at 1 year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using human serum complement.
Percentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 8, Against Each N.Meningitidis Serogroup at 24 Months of AgeAt 24 months of age (Visit 6)To assess antibody persistence against N. Meningitidis serogroups A, C, W and Y at 1 year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using rabbit serum complement

Secondary

MeasureTime frameDescription
Percentage of Subjects With rSBA Titers ≥ 8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeAt 13 months of age (Visit 5)To assess antibody response against N. meningitidis serogroups A, C, W and Y at 1 month after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using rabbit serum complement.
Percentage of Subjects With rSBA Titers ≥ 128 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeAt 13 months of age (Visit 5)To assess antibody response against N. meningitidis serogroups A, C, W and Y at 1 month after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using rabbit serum complement.
hSBA Geometric Mean Titers (GMTs) Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of AgeAt 24 months of age (Visit 6)To assess persistence of antibody response in terms of GMTs using hSBA assay against N. meningitidis serogroups A, C, W and Y at 1 year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine.
rSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of AgeAt 24 months of age (Visit 6)To assess persistence of antibody response in terms of GMTs using rSBA assay against N. meningitidis serogroups A, C, W and Y at 1 year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine.
hSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeAt 13 months of age (Visit 5)To assess antibody response in terms of GMTs using hSBA assay against N. meningitidis serogroups A, C, W and Y at 1 month after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine.
rSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of Age.At 13 months of age (Visit 5)To assess antibody response in terms of GMTs using rSBA assay against N. meningitidis serogroups A, C, W and Y at 1 month after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine.
Percentage of Subjects With hSBA ≥8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeAt 13 months of age (Visit 5)To assess antibody response against N. meningitidis serogroups A, C, W and Y at 1 month after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using human serum complement.

Countries

South Korea

Participant flow

Recruitment details

Subjects were enrolled from 6 centers in South Korea.

Pre-assignment details

All enrolled subjects were vaccinated.

Participants by arm

ArmCount
MenACWY Group
Healthy male and female infants approximately 2 months (55-89 days) of age on the day of consent, who received 4 doses of the GSK MenACWY Conjugate Vaccine, administered intramuscularly, at 2, 4, 6 and 12 months of age.
128
Total128

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyLost to Follow-up8
Overall StudyProtocol Violation1
Overall StudyWithdrawal by Subject2

Baseline characteristics

CharacteristicMenACWY Group
Age, Continuous71.7 Days
STANDARD_DEVIATION 8.09
Race/Ethnicity, Customized
Asian
127 Participants
Race/Ethnicity, Customized
Unspecified
1 Participants
Sex: Female, Male
Female
59 Participants
Sex: Female, Male
Male
69 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 128
other
Total, other adverse events
112 / 128
serious
Total, serious adverse events
26 / 128

Outcome results

Primary

Number of Subjects With Any Medically Attended Unsolicited AEs and AEs Leading to Premature Withdrawal

An unsolicited adverse event is an adverse event that was not solicited using a Subject Diary and that was spontaneously communicated by a subject parent(s)/legal guardian(s)\] who has signed the informed consent. All medically attended unsolicited AEs were collected from Day 1 to Visit 6.

Time frame: From Day 1 to Visit 6 (at 24 Months of age)

Population: Analysis was performed on the unsolicited safety set, which included all subjects who received a study vaccination and reported any unsolicited adverse event data.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
MenACWY GroupNumber of Subjects With Any Medically Attended Unsolicited AEs and AEs Leading to Premature WithdrawalAny Medically Attended Unsolicited AEs85 Participants
MenACWY GroupNumber of Subjects With Any Medically Attended Unsolicited AEs and AEs Leading to Premature WithdrawalAEs leading to premature withdrawal0 Participants
Primary

Number of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.

Solicited signs and symptoms occurring within 30 minutes following each vaccination, include solicited local events (e.g. injection site erythema, induration and tenderness -threshold for Erythema and Induration: Type II- None \[\<10mm\], Any\[\>=10 mm\]), solicited systemic events (e.g. change in eating habits, sleepiness, irritability, vomiting, diarrhea, fever\[ body temperature \>=38°C measured preferably via tympanic route\]), and any other solicited event like use of analgesic/antipyretics for treatment or for prophylaxis

Time frame: Within 30 minutes of each vaccination

Population: Analysis was performed on the solicited safety set, which included all subjects who received a study vaccination and reported any solicited adverse event data and/or indicators of solicited adverse events.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site induration, Vaccination 3, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site tenderness, Vaccination 3, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Sleepiness, Vaccination 3, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Vomiting, Vaccination 3, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Fever, Vaccination 1, No128 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site erythema, Vaccination 1, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site erythema, Vaccination 2, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site erythema, Vaccination 3, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site erythema, Vaccination 4, Any1 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site induration, Vaccination 1, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site induration, Vaccination 2, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site induration, Vaccination 4, Any1 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site tenderness, Vaccination 1, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site tenderness, Vaccination 2, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Injection site tenderness, Vaccination 4, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Change in eating habits, Vaccination 1, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Change in eating habits, Vaccination 2, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Change in eating habits, Vaccination 3, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Change in eating habits, Vaccination 4, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Diarrhea, Vaccination 1, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Diarrhea, Vaccination 2, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Diarrhea, Vaccination 3, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Diarrhea, Vaccination 4, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Irritability, Vaccination 1, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Irritability, Vaccination 2, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Irritability, Vaccination 3, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Irritability, Vaccination 4, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Sleepiness, Vaccination 1, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Sleepiness, Vaccination 2, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Sleepiness, Vaccination 4, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Vomiting, Vaccination 1, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Vomiting, Vaccination 2, Any0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Vomiting, Vaccination 4, Any1 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Fever, Vaccination 1, Yes0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Fever, Vaccination 2, Yes0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Fever, Vaccination 2, No128 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Fever, Vaccination 3, Yes0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Fever, Vaccination 3, No128 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Fever, Vaccination 4, Yes0 Participants
MenACWY GroupNumber of Subjects With Any Solicited Adverse Events (AEs) Within 30 Minutes After Each Vaccination.Fever, Vaccination 4, No124 Participants
Primary

Number of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each Vaccination

Solicited local AEs reported from day 1 to day 7 after each vaccination were assessed. Assessed local symptoms include injection site erythema, injection site induration and injection site tenderness. Any = incidence of a particular symptom regardless of intensity grade.Threshold for Erythema and Induration: Type II None (\<10 mm), Any (\>=10 mm)

Time frame: From Day 1 to Day 7 after each vaccination

Population: Analysis was performed on the solicited safety set, which included all subjects who received a study vaccination and reported any solicited adverse event data and/or indicators of solicited adverse events.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site induration, Vaccination 2, Any9 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site induration, Vaccination 3, Any3 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site erythema, Vaccination 1, Any4 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site erythema, Vaccination 2, Any6 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site erythema, Vaccination 3, Any6 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site erythema, Vaccination 4, Any6 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site induration, Vaccination 1, Any4 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site induration, Vaccination 4, Any6 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site tenderness, Vaccination 1, Any17 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site tenderness, Vaccination 2, Any21 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site tenderness, Vaccination 3, Any14 Participants
MenACWY GroupNumber of Subjects With Any Solicited Local AEs From Day 1 to Day 7 After Each VaccinationInjection site tenderness, Vaccination 4, Any20 Participants
Primary

Number of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.

Solicited systemic AEs reported from day 1 to day 7 after each vaccination were assessed. Assessed systemic symptoms include change in eating habits, sleepiness, irritability, vomiting, diarrhea and fever (body temperature ≥ 38°C (100.4°F)).

Time frame: From Day 1 to Day 7 after each vaccination

Population: Analysis was performed on the solicited safety set, which included all subjects who received a study vaccination and reported any solicited adverse event data and/or indicators of solicited adverse events.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Change in eating habits, Vaccination 2, Any21 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Change in eating habits, Vaccination 3, Any21 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Sleepiness, Vaccination 4, Any20 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Fever, Vaccination 4, No109 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Change in eating habits, Vaccination 1, Any29 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Change in eating habits, Vaccination 4, Any24 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Diarrhea, Vaccination 1, Any15 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Diarrhea, Vaccination 2, Any13 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Diarrhea, Vaccination 3, Any15 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Diarrhea, Vaccination 4, Any17 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Irritability, Vaccination 1, Any58 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Irritability, Vaccination 2, Any49 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Irritability, Vaccination 3, Any47 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Irritability, Vaccination 4, Any45 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Sleepiness, Vaccination 1, Any52 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Sleepiness, Vaccination 2, Any31 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Sleepiness, Vaccination 3, Any28 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Vomiting, Vaccination 1, Any26 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Vomiting, Vaccination 2, Any20 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Vomiting, Vaccination 3, Any15 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Vomiting, Vaccination 4, Any5 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Fever, Vaccination 1, Yes4 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Fever, Vaccination 1, No124 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Fever, Vaccination 2, Yes10 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Fever, Vaccination 2, No118 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Fever, Vaccination 3, Yes6 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Fever, Vaccination 3, No121 Participants
MenACWY GroupNumber of Subjects With Any Solicited Systemic AEs From Day 1 to Day 7 After Each Vaccination.Fever, Vaccination 4, Yes15 Participants
Primary

Number of Subjects With Serious AEs (SAEs)

Subjects reporting SAEs from day 1 to visit 6 (at 24 months of age) were assessed. A serious adverse event (SAE) is defined as any untoward medical occurrence that at any dose results in one or more of the following: death, is life-threatening, required or prolonged hospitalization, persistent or significant disability/incapacity, congenital anomaly/or birth defect, An important and significant medical event that may not be immediately life threatening or resulting in death or hospitalization but, based upon appropriate medical judgment, may jeopardize the subject or may require intervention to prevent one of the other outcomes listed above.

Time frame: From Day 1 to Visit 6 (At 24 months of age)

Population: Analysis was performed on the overall safety set, which included all subjects who received a study vaccination and reported any solicited/unsolicited adverse event data.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
MenACWY GroupNumber of Subjects With Serious AEs (SAEs)26 Participants
Primary

Percentage of Subjects With Human Serum Bactericidal Assay (hSBA) Titers ≥ 8 Against Each N.Meningitidis Serogroup A,C,W and Y at 24 Months of Age.

To assess antibody persistence against N. meningitidis serogroups A, C, W and Y at 1 year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using human serum complement.

Time frame: At 24 months of age (Visit 6)

Population: Analysis was performed on the Full analysis set (FAS), which included all enrolled subjects who received at least one study vaccination and provided an evaluable hSBA Visit 6 assessment, one year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age), for at least one serogroup.

ArmMeasureGroupValue (NUMBER)
MenACWY GroupPercentage of Subjects With Human Serum Bactericidal Assay (hSBA) Titers ≥ 8 Against Each N.Meningitidis Serogroup A,C,W and Y at 24 Months of Age.Serogroup A39 Percentage of subjects
MenACWY GroupPercentage of Subjects With Human Serum Bactericidal Assay (hSBA) Titers ≥ 8 Against Each N.Meningitidis Serogroup A,C,W and Y at 24 Months of Age.Serogroup C61 Percentage of subjects
MenACWY GroupPercentage of Subjects With Human Serum Bactericidal Assay (hSBA) Titers ≥ 8 Against Each N.Meningitidis Serogroup A,C,W and Y at 24 Months of Age.Serogroup W88 Percentage of subjects
MenACWY GroupPercentage of Subjects With Human Serum Bactericidal Assay (hSBA) Titers ≥ 8 Against Each N.Meningitidis Serogroup A,C,W and Y at 24 Months of Age.Serogroup Y89 Percentage of subjects
Primary

Percentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 128 Against Each N.Meningitidis Serogroup at 24 Months of Age

To assess antibody persistence against N. Meningitidis serogroups A, C, W and Y at 1 year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using rabbit serum complement

Time frame: At 24 months of age (Visit 6)

Population: Analysis was performed on the FAS, which included all enrolled subjects who receive at least one study vaccination and provided an evaluable rSBA Visit 6 assessment, one year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age), for at least one serogroup.

ArmMeasureGroupValue (NUMBER)
MenACWY GroupPercentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 128 Against Each N.Meningitidis Serogroup at 24 Months of AgeSerogroup A98 Percentage of subjects
MenACWY GroupPercentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 128 Against Each N.Meningitidis Serogroup at 24 Months of AgeSerogroup C30 Percentage of subjects
MenACWY GroupPercentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 128 Against Each N.Meningitidis Serogroup at 24 Months of AgeSerogroup W62 Percentage of subjects
MenACWY GroupPercentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 128 Against Each N.Meningitidis Serogroup at 24 Months of AgeSerogroup Y80 Percentage of subjects
Primary

Percentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 8, Against Each N.Meningitidis Serogroup at 24 Months of Age

To assess antibody persistence against N. Meningitidis serogroups A, C, W and Y at 1 year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using rabbit serum complement

Time frame: At 24 months of age (Visit 6)

Population: Analysis was performed on the FAS, which included all enrolled subjects who receive at least one study vaccination and provided an evaluable rSBA Visit 6 assessment, one year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age), for at least one serogroup.

ArmMeasureGroupValue (NUMBER)
MenACWY GroupPercentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 8, Against Each N.Meningitidis Serogroup at 24 Months of AgeSerogroup A99 Percentage of subjects
MenACWY GroupPercentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 8, Against Each N.Meningitidis Serogroup at 24 Months of AgeSerogroup C54 Percentage of subjects
MenACWY GroupPercentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 8, Against Each N.Meningitidis Serogroup at 24 Months of AgeSerogroup W69 Percentage of subjects
MenACWY GroupPercentage of Subjects With Rabbit Serum Bactericidal Assay (rSBA) Titers ≥ 8, Against Each N.Meningitidis Serogroup at 24 Months of AgeSerogroup Y90 Percentage of subjects
Secondary

hSBA Geometric Mean Titers (GMTs) Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of Age

To assess persistence of antibody response in terms of GMTs using hSBA assay against N. meningitidis serogroups A, C, W and Y at 1 year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine.

Time frame: At 24 months of age (Visit 6)

Population: Analysis was performed on the Full analysis set (FAS), which included all enrolled subjects who received atleast one study vaccination and provided an evaluable hSBA Visit 6 assessment, one year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age ), for atleast one serogroup.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
MenACWY GrouphSBA Geometric Mean Titers (GMTs) Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of AgeSerogroup C13.04 Titers
MenACWY GrouphSBA Geometric Mean Titers (GMTs) Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of AgeSerogroup W53.56 Titers
MenACWY GrouphSBA Geometric Mean Titers (GMTs) Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of AgeSerogroup A6.80 Titers
MenACWY GrouphSBA Geometric Mean Titers (GMTs) Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of AgeSerogroup Y50.75 Titers
Secondary

hSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of Age

To assess antibody response in terms of GMTs using hSBA assay against N. meningitidis serogroups A, C, W and Y at 1 month after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine.

Time frame: At 13 months of age (Visit 5)

Population: The Analysis was done on FAS hSBA 1 month, which included all enrolled subjects who received atleast one study vaccination and provided evaluable hSBA immunogenicity data at 1 month after last vaccination for atleast one serogroup.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
MenACWY GrouphSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup A107.90 Titers
MenACWY GrouphSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup C201.04 Titers
MenACWY GrouphSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup W426.74 Titers
MenACWY GrouphSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup Y359.39 Titers
Secondary

Percentage of Subjects With hSBA ≥8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of Age

To assess antibody response against N. meningitidis serogroups A, C, W and Y at 1 month after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using human serum complement.

Time frame: At 13 months of age (Visit 5)

Population: The Analysis was done on FAS hSBA 1 month, which included all enrolled subjects who received at least one study vaccination and who provided evaluable hSBA immunogenicity data at 1 month after last vaccination for at least one serogroup.

ArmMeasureGroupValue (NUMBER)
MenACWY GroupPercentage of Subjects With hSBA ≥8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup A94 Percentage of subjects
MenACWY GroupPercentage of Subjects With hSBA ≥8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup C98 Percentage of subjects
MenACWY GroupPercentage of Subjects With hSBA ≥8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup W100 Percentage of subjects
MenACWY GroupPercentage of Subjects With hSBA ≥8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup Y100 Percentage of subjects
Secondary

Percentage of Subjects With rSBA Titers ≥ 128 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of Age

To assess antibody response against N. meningitidis serogroups A, C, W and Y at 1 month after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using rabbit serum complement.

Time frame: At 13 months of age (Visit 5)

Population: The Analysis was done on FAS rSBA 1 month, which included all enrolled subjects who received atleast one study vaccination and who provided evaluable rSBA immunogenicity data at 1 month after last vaccination for atleast one serogroup.

ArmMeasureGroupValue (NUMBER)
MenACWY GroupPercentage of Subjects With rSBA Titers ≥ 128 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup A100 Percentage of subjects
MenACWY GroupPercentage of Subjects With rSBA Titers ≥ 128 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup C92 Percentage of subjects
MenACWY GroupPercentage of Subjects With rSBA Titers ≥ 128 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup W98 Percentage of subjects
MenACWY GroupPercentage of Subjects With rSBA Titers ≥ 128 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup Y98 Percentage of subjects
Secondary

Percentage of Subjects With rSBA Titers ≥ 8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of Age

To assess antibody response against N. meningitidis serogroups A, C, W and Y at 1 month after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine as measured by serum bactericidal assay using rabbit serum complement.

Time frame: At 13 months of age (Visit 5)

Population: The Analysis was done on FAS rSBA 1 month, which included all enrolled subjects who received atleast one study vaccination and who provided evaluable rSBA immunogenicity data at 1 month after last vaccination for atleast one serogroup.

ArmMeasureGroupValue (NUMBER)
MenACWY GroupPercentage of Subjects With rSBA Titers ≥ 8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup A100 Percentage of subjects
MenACWY GroupPercentage of Subjects With rSBA Titers ≥ 8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup C99 Percentage of subjects
MenACWY GroupPercentage of Subjects With rSBA Titers ≥ 8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup W100 Percentage of subjects
MenACWY GroupPercentage of Subjects With rSBA Titers ≥ 8 Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of AgeSerogroup Y100 Percentage of subjects
Secondary

rSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of Age.

To assess antibody response in terms of GMTs using rSBA assay against N. meningitidis serogroups A, C, W and Y at 1 month after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine.

Time frame: At 13 months of age (Visit 5)

Population: The Analysis was done on FAS rSBA 1 month, which included all enrolled subjects who received atleast one study vaccination and provided evaluable rSBA immunogenicity data at 1 month after last vaccination for atleast one serogroup.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
MenACWY GrouprSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of Age.Serogroup Y2226.70 Titers
MenACWY GrouprSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of Age.Serogroup A7394.18 Titers
MenACWY GrouprSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of Age.Serogroup C735.07 Titers
MenACWY GrouprSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 13 Months of Age.Serogroup W2718.69 Titers
Secondary

rSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of Age

To assess persistence of antibody response in terms of GMTs using rSBA assay against N. meningitidis serogroups A, C, W and Y at 1 year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age) of MenACWY vaccine.

Time frame: At 24 months of age (Visit 6)

Population: Analysis was performed on the Full analysis set (FAS), which included all enrolled subjects who received atleast one study vaccination and provided an evaluable rSBA Visit 6 assessment, one year after completion of a 4-dose infant vaccination series (2, 4, 6 and 12 months of age ), for atleast one serogroup.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
MenACWY GrouprSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of AgeSerogroup A2269.48 Titers
MenACWY GrouprSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of AgeSerogroup C17.17 Titers
MenACWY GrouprSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of AgeSerogroup W114.04 Titers
MenACWY GrouprSBA GMTs Against Each N. Meningitidis Serogroups A, C, W and Y at 24 Months of AgeSerogroup Y310.91 Titers

Source: ClinicalTrials.gov · Data processed: Mar 2, 2026