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MenACWY-7B low dose vaccine

Phase 2

Infections, Meningococcal | Vaccine | Infectious Disease |GSK plc|Last Updated: Jun 26, 2026

Success Probability

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Trial Design

RandomizedACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment726

FDA Designations

No designations recorded

Clinical trial landscape

MenACWY-7B low dose vaccine · 1 trial · 1 indication

Phase 2 1
NCT05082285A Study on the Safety, Tolerability and Immune Response of Meningococcal Combined ABCWY Vaccine in Healthy InfantsInfections, Meningococcal
COMPLETED726 Analytics
PHASE2COMPLETED
A Study on the Safety, Tolerability and Immune Response of Meningococcal Combined ABCWY Vaccine in Healthy Infants
Infections, MeningococcalUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants Reporting Any Solicited Administration Site Events After the First Vaccination Administered on Day 1
From Day 1 to Day 7

The solicited administration site events include tenderness (administration site pain), erythema (redness), induration and swelling. Any solicited administration site events = occurrence of the event regardless of intensity grade. Data for solicited administration site events is presented for each intervention administered in each arm group.

Number of Participants Reporting Any Solicited Systemic Events After the First Vaccination Administered on Day 1
From Day 1 to Day 7

The solicited systemic events included diarrhoea, drowsiness (somnolence), fever (pyrexia), irritability/fussiness, loss of appetite, and vomiting. Fever is defined as temperature \>38.0°C/100.4°F. Any solicited systemic events = occurrence of the event regardless of intensity grade.

Number of Participants Reporting Any Solicited Administration Site Events After the Second Vaccination Administered on Day 61
From Day 61 to Day 67
Number of Participants Reporting Any Solicited Systemic Events After the Second Vaccination Administered on Day 61
From Day 61 to Day 67
Number of Participants Reporting Any Solicited Administration Site Events After the Third Vaccination Administered on Day 301
From Day 301 to Day 307
Number of Participants Reporting Any Solicited Systemic Events After the Third Vaccination Administered on Day 301
From Day 301 to Day 307
Number of Participants Reporting Any Unsolicited Adverse Events (AEs) After the First Vaccination Administered on Day 1
From Day 1 to Day 30

Unsolicited AEs includes any AE reported in addition to those solicited during the clinical study. Also, any 'solicited' symptom with onset outside the specified period of follow-up for solicited symptoms is reported as an unsolicited adverse event. Assessed unsolicited AEs include serious adverse events (SAEs), AEs leading to withdrawal, AEs of special interest (AESIs), and medically attended AEs (MAAEs). Any = occurrence of the event regardless of the intensity grade.

Number of Participants Reporting Any Unsolicited AEs After the Second Vaccination Administered on Day 61
From Day 61 to Day 90
Number of Participants Reporting Any Unsolicited AEs After the Third Vaccination Administered on Day 301
From Day 301 to Day 330
Number of Participants Reporting MAAEs, SAEs, AEs Leading to Withdrawal, and AESIs
From Day 1 to Day 481

MAAEs are defined as symptoms or illnesses requiring a hospitalization, or an emergency room visit, or visit to/by a health care provider. An SAE is any untoward medical occurrence that results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization or results in disability/incapacity. AESIs are predefined (serious or non-serious) AEs of scientific and medical concern specific to the product or program, for which ongoing monitoring and rapid communication by the investigator to the sponsor can be appropriate, because such an event might warrant further investigation in order to characterize and understand it. AEs leading to withdrawal are defined as AEs due which the participant is considered to have withdrawn from the study as no new study procedure has been performed or no new information has been collected for them since the date of withdrawal/last contact.

Percentage of Participants With Human Serum Bactericidal Assay (hSBA) Titers ≥ Lower Limit of Quantitation (LLOQ) for Each Serogroup B Indicator Strain at 1 Month After the Second Vaccination
At Day 91 (1 month after the second vaccination)

The immune response to the MenACWY-7B vaccine (low and high dose), the MenABCWY-1Gen vaccine and the MenB vaccine was evaluated by measuring bactericidal activity using an hSBA against all serogroup B indicator strains fHbp, NadA, NHBA, PorA, fHbp V1.13, fHbp V2 and fHbp V3.

Percentage of Participants With hSBA Titers ≥ LLOQ for Each Serogroup B Indicator Strain at Pre-third Vaccination
At Day 301 (pre-third vaccination)
Percentage of Participants With hSBA Titers ≥ LLOQ for Each Serogroup B Indicator Strain at 1 Month After the Third Vaccination
At Day 331 (1 month after the third vaccination)
hSBA Geometric Mean Titers (GMTs) for Each Serogroup B Indicator Strain at 1 Month After the Second Vaccination
At Day 91 (1 month after the second vaccination)

The immune response to the MenACWY-7B vaccine (low and high dose), the MenABCWY-1Gen vaccine and the MenB vaccine against serogroup B indicator strains is determined using hSBA GMTs.

hSBA GMTs for Each Serogroup B Indicator Strain at Pre-third Vaccination
At Day 301 (pre-third vaccination)
hSBA GMTs for Each Serogroup B Indicator Strain at 1 Month After the Third Vaccination
At Day 331 (1 month after the third vaccination)
hSBA Geometric Mean Ratios (GMRs) for Each Serogroup B Indicator Strain
At Day 331 (1 month after the third vaccination) compared to Day 301 (pre-third vaccination)

The immune response to the MenACWY-7B vaccine (low and high dose), the MenABCWY-1Gen vaccine and the MenB vaccine against serogroup B indicator strains is determined using hSBA GMRs. Within-group ratios of hSBA GMTs against each of the N.meningitidis serogroup B indicator strain at Day 331 compared to Day 301.

Percentage of Participants With hSBA Titers ≥ LLOQ for Each A, C, W and Y Serogroup at 1 Month After the Second Vaccination
At Day 91 (1 month after the second vaccination)

The immune response to the MenACWY-7B vaccine (low and high dose), the MenABCWY-1Gen vaccine and the MenACWY-TT vaccine is evaluated by measuring bactericidal activity using an hSBA against serogroups A, C, W and Y.

Percentage of Participants With hSBA Titers ≥ LLOQ for Each A, C, W and Y Serogroup at Pre-third Vaccination
At Day 301 (pre-third vaccination)
Percentage of Participants With hSBA Titers ≥ LLOQ for Each A, C, W and Y Serogroup at 1 Month After the Third Vaccination
At Day 331 (1 month after the third vaccination)
hSBA GMTs for Each A, C, W and Y Serogroup at 1 Month After the Second Vaccination
At Day 91 (1 month after the second vaccination)

The immune response to the MenACWY-7B vaccine (low and high dose), the MenABCWY-1Gen vaccine and the MenACWY-TT vaccine against serogroups A, C, W and Y is determined using hSBA GMTs.

hSBA GMTs for Each A, C, W and Y Serogroup at Pre-third Vaccination
At Day 301 (pre-third vaccination)
hSBA GMTs for Each A, C, W and Y Serogroup at 1 Month After the Third Vaccination
At Day 331 (1 month after the third vaccination)
hSBA GMRs for Each A, C, W and Y Serogroup
At Day 331 (1 month after the third vaccination) compared to Day 301 (pre-third vaccination)
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
MenACWY-7B low dose GroupEXPERIMENTALParticipants received a single dose of the MenACWY-7B low dose vaccine on Day 1, Day 61 and Day 301.
MenB+MenACWY-TT GroupACTIVE_COMPARATORParticipants received a single dose of the meningococcal group B (MenB) vaccine and the meningococcal serogroups A, C, W-135, Y tetanus toxoid conjugate (MenACWY-TT) vaccine on Day 1, Day 61 and Day 301.
MenACWY-7B high dose GroupEXPERIMENTALParticipants received a single dose of the MenACWY-7B high dose vaccine on Day 1, Day 61 and Day 301.
ABCWY-1Gen GroupEXPERIMENTALParticipants received a single dose of the MenABCWY-1Gen vaccine on Day 1, Day 61 and Day 301.

Interventions

NameTypeDescription
MenACWY-7B low dose vaccineCOMBINATION_PRODUCTMenACWY-7B low dose vaccine is administered intramuscularly in the upper thigh region of the right leg.
MenACWY-7B high dose vaccineCOMBINATION_PRODUCTMenACWY-7B high dose vaccine is administered intramuscularly in the upper thigh region of the right leg.
MenABCWY-1Gen vaccineCOMBINATION_PRODUCTMenABCWY-1Gen vaccine is administered intramuscularly in the upper thigh region of the right leg.
MenB vaccineCOMBINATION_PRODUCTMenB vaccine is administered intramuscularly in the upper thigh region of the right leg.
MenACWY-TT vaccineCOMBINATION_PRODUCTMenACWY-TT vaccine is administered intramuscularly in the lower thigh region of the right leg.
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Eligibility Criteria

Age Range55 Days to 89 Days
SexALL
Healthy VolunteersYes
Study Sites33

Inclusion Criteria: * Participants' parent(s)/Legally Acceptable Representative(s) \[LAR(s)\] who, in the opinion of the investigator, can and will comply, with the requirements of the protocol. * Written or witnessed/thumb printed informed consent obtained from the parent(s)/LAR(s) of the particip...

Countries:Dominican RepublicFinlandGermanyHondurasPolandSouth AfricaSpainUnited Kingdom
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Recent Changes (Last 90 Days)

MEDIUMJul 27, 2026NCT05082285TRIAL_REMOVED: changed
MEDIUMJul 27, 2026NCT05082285TRIAL_REMOVED: changed
MEDIUMJul 27, 2026NCT05082285TRIAL_REMOVED: changed
MEDIUMJul 27, 2026NCT05082285TRIAL_REMOVED: changed

Frequently asked questions about MenACWY-7B low dose vaccine

What is MenACWY-7B low dose vaccine used for?

MenACWY-7B low dose vaccine is an investigational vaccine being studied for the prevention of meningococcal infections. It is designed to protect against meningococcal disease caused by serogroups A, C, W, and Y, and is being evaluated in healthy infants.

Who makes MenACWY-7B low dose vaccine?

MenACWY-7B low dose vaccine is being developed by GSK plc, a global biopharma company listed on the London Stock Exchange under the ticker GSK. GSK is conducting clinical trials to evaluate the vaccine's safety and immune response in infants.

What phase is MenACWY-7B low dose vaccine in?

MenACWY-7B low dose vaccine is in Phase 2 clinical development. It is an investigational vaccine and has not been approved by regulatory authorities. The Phase 2 trial has been completed, and the vaccine remains under clinical evaluation.

What clinical trials is MenACWY-7B low dose vaccine in?

MenACWY-7B low dose vaccine has been studied in one completed Phase 2 trial, NCT05082285, which evaluated the safety, tolerability, and immune response of a meningococcal combined ABCWY vaccine in healthy infants. The trial enrolled 726 participants across multiple countries.

Is MenACWY-7B low dose vaccine the same as a meningococcal ABCWY vaccine?

MenACWY-7B low dose vaccine is being studied as part of a meningococcal combined ABCWY vaccine. The Phase 2 trial NCT05082285 assessed a vaccine targeting serogroups A, B, C, W, and Y, with MenACWY-7B low dose being a component of this combination.