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Completed

NCT Number: NCT06995430

A Phase 3 Study to Assess the Immune Response And Safety Of Rmenb+Omv Nz In Primed Healthy Participants (10 To 20 Years Old)

The main purpose of this study is to evaluate the immune response and safety of a booster dose of the meningococcal group B vaccine, rMenB+OMV NZ (also known as Bexsero), in adolescents and young adults aged 10 to 20 years. This study focuses on individuals who were first vaccinated with rMenB+OMV NZ as infants. The primary hypothesis is that a booster dose of the vaccine will elicit a stronger immune response in these primed individuals compared to those who have never received any group B meningococcal vaccine, referred to as 'nave' participants.

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Key information

Age range

10 year–20 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

GSK Investigational Site, Espoo, Finland

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Participants are eligible to be included in the study only if all of the following criteria apply:

For primed group only:

  • Participated who were primed with rMenB + OMV NZ in only either 3+1 or 2+1 schedule during the first 2 years of life as confirmed by electronic or paper vaccination record.

OR

For naïve group only:

  • Electronic or paper vaccination record confirmed participant who has never received any group B meningococcal vaccine and is recruited in the same country as primed participants.

For all participants:

  • Participants and/or 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 participant / parent(s)/LAR(s) of the participant prior to performance of any study-specific procedure.
  • Written informed assent obtained from the participant (if applicable) along with informed consent from the participant's parent(s)/LAR(s) prior to performing any study specific procedure.

Note: For age 10-16 years, parents or LAR to give consent along with participants, based on country regulations for participants and for >16/18 to 20 years, participants give consent independent of parents/LARs, or as per local country regulations.

  • A male or female between, and including, 10 and 20 years of age at the time of the first study intervention administration.
  • Female participants of non-childbearing potential may be enrolled in the study. Non-childbearing potential is defined as pre-menarche, hysterectomy, bilateral ovariectomy.
  • Female participants of childbearing potential may be enrolled in the study, if the participant:
  • has practiced adequate contraception for 1 month prior to study intervention administration, and
  • has a negative pregnancy test on the day of study intervention administration, and
  • has agreed to continue adequate contraception during the entire study treatment period.

Exclusion criteria

Participants are excluded from the study if any of the following criteria apply:

Medical conditions

  • Current or previous, confirmed or suspected disease caused by N. meningitidis.
  • Known exposure to an individual with laboratory confirmed N. meningitidis infection, within 60 days prior to enrollment.
  • History of any reaction or hypersensitivity likely to be exacerbated by any component of the study intervention.
  • Medical conditions representing a contraindication to intramuscular vaccination and blood draws.
  • Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination (no laboratory testing required).
  • Any other clinical condition that, in the opinion of the investigator, might pose additional risk to the participant due to participation in the study.

Prior/Concomitant therapy

  • Use of any investigational or non-registered product (drug, vaccine or medical device) other than the study intervention during the period beginning 30 days before the first dose of study intervention (Day -29 to Day 1), or their planned use during the study period.
  • Chronic administration of immune-modifying drugs (defined as more than 14 consecutive days in total) and/or planned use of long-acting immune-modifying treatments at any time up to the end of the study.
  • Within 90 days prior to study intervention administration: for corticosteroids, this will mean prednisone equivalent ≥20 mg/day for adult participants or >= 0.5 mg/kg/day with maximum of 20 milligram (mg)/day for pediatric participants. Inhaled and topical steroids are allowed.
  • Within 90 days prior to study intervention administration: long-acting immune-modifying drugs including among others immunotherapy (e.g., TNF-inhibitors), monoclonal antibodies, antitumoral medication.
  • Administration of immunoglobulins and/or any blood products or plasma derivatives within 180 days prior to study intervention administration and/or planned use at any time up to the end of the study.

For primed group only:

  • Participants who received additional dose(s) of group B meningococcal vaccine other than 2+1 or 3+1 schedule prior to study intervention administration.

Prior/Concurrent clinical study experience

  • Concurrently participating in another clinical study, at any time during the study period, in which the participant has been or will be exposed to an investigational or a non-investigational intervention (drug/vaccine/invasive medical device).

Other exclusion criteria

  • Pregnant or lactating female participant.
  • Any study personnel or their immediate dependents, family, or household member.
  • Child in care.

Treatment and study plan

rMenB+OMV NZ vaccine

Biological

1 dose in the Primed group or 2 doses in the Naive group.

Other names: Bexsero

Primary outcomes

  1. hSBA Geometric mean titers (GMTs) ratio against each MenB indicator strain

    Time frame: At Day 31

Secondary outcomes

  1. Number of participants with hSBA titers greater than or equal (>=) to pre-defined limit of detection against each MenB indicator strain

    Time frame: At Day 31

  2. Number of participants with hSBA titers >= lower limit of quantification (LLOQ) against each MenB indicator strain

    Time frame: At Day 31

  3. Number of participants with four-fold increase in hSBA titers

    Time frame: At Day 31

  4. hSBA GMTs against each MenB indicator strain

    Time frame: At Day 31 compared to Day 1

  5. hSBA Geometric Mean Ratios (GMRs) against each MenB indicator strain

    Time frame: At Day 31 compared to Day 1

  6. Number of participants with hSBA titers >= to pre-defined limit of detection against each MenB indicator strain

    Time frame: At Day 1

  7. Number of participants with hSBA titers >= LLOQ against each MenB indicator strain

    Time frame: At Day 1

  8. hSBA GMTs against each MenB indicator strain

    Time frame: At Day 1

  9. Number of participants with solicited administration site events

    Time frame: Day 1 (day of injection) to Day 7

    The solicited administration site events include injection site pain, erythema (redness), swelling and induration.

  10. Number of participants with solicited systemic events

    Time frame: Day 1 (day of injection) to Day 7

    The solicited systemic events include fever (temperature >= 38.0°C), headache, myalgia (muscle pain), arthralgia (joint pain), fatigue (tiredness), nausea.

  11. Number of participants with any unsolicited adverse events (AEs)

    Time frame: Day 1 (day of injection) to Day 31

  12. Number of participants with adverse events of special interest (AESI): arthritis, serious adverse events (SAEs), AEs leading to withdrawal

    Time frame: Day 1 to Day 31 (throughout the study period)

Sponsors and collaborators

Lead sponsor

GlaxoSmithKline

Industry

Registry information

Official study title

A Phase 3b, Open-Label, Multi-Center Study to Assess the Immune Response And Safety of The Meningococcal Group B Vaccine Rmenb+Omv Nz When Administered to Healthy Participants Aged 10 To 20 Years Old, Who Were Primed During the First 2 Years Of Life

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
May 29, 2025
Registry last updated
Apr 21, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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