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Completed

NCT Number: NCT05794230

Study of a Quadrivalent Meningococcal Conjugate Vaccine (MenACYW Conjugate Vaccine) Given With Routine Pediatric Vaccines in Healthy Infants and Toddlers in India and the Republic of South Africa

This open label randomized study will be conducted to evaluate and/or describe the immunogenicity and describe the safety of MenACYW conjugate vaccine when administered in infants and toddlers.

It will be conducted in India and the RSA in 2 cohorts:

* Cohort I: Infants and toddlers 6 months to 16 months of age (Cohort I) * Cohort II: Infants and toddlers 6 weeks to 15 months of age (Cohort II) In Cohort I, eligible participants will be randomized in a 1:1 ratio to receive 2 intramuscular (IM) injections (1+1 vaccination schedule) of either MenACYW conjugate vaccine (Groups 1 and 3) or Menactra vaccine (Groups 2 and 4), co-administered with routine pediatric vaccines.

In Cohort II, eligible participants will be randomized in a 2:1 ratio to receive either 3 IM injections (2+1 vaccination schedule) of MenACYW conjugate vaccine co-administered with routine pediatric vaccines (Groups 5 and 7) or routine pediatric vaccines only (Groups 6 and 8).

The primary objectives of this study are:

* To demonstrate the non-inferiority of immunogenicity of 2 doses of MenACYW conjugate vaccine compared to 2 doses of Menactra® vaccine in infants and toddlers 6 months to 16 months of age (Cohort I) in terms of serum bactericidal assay using human complement (hSBA) seroprotection (titers ≥ 1:8) in India and the Republic of South Africa (RSA) * To demonstrate the vaccine immune sufficiency of 3 doses of MenACYW conjugate vaccine in infants and toddlers 6 weeks to 15 months of age (Cohort II) in terms of hSBA seroprotection (titers ≥ 1:8) in India and the RSA

The secondary objectives of this study are:

* To describe the antibody titers to the meningococcal serogroups A, C, Y, and W:

* before and 30 days post primary series of MenACYW conjugate vaccine and before and 30 days post booster dose of MenACYW conjugate vaccine in infants and toddlers 6 weeks to 15 months of age (Cohort II) in India and the RSA when administered concomitantly with other age-recommended vaccines. * before and after 30 days post each dose of MenACYW conjugate vaccine or Menactra vaccine in infants and toddlers 6 months to 16 months of age (Cohort I) in India and the RSA when administered concomitantly with other age-recommended vaccines. * To describe the antibody responses against the antigens of the other age-recommended vaccines when administered concomitantly with MenACYW conjugate vaccine:

* in infants and toddlers 6 weeks to 15 months of age (Cohort II) in India and the RSA. * in infants and toddlers 6 months to 16 months of age (Cohort I) in India and the RSA. * To describe the safety profile of MenACYW conjugate vaccine and that of licensed Menactra vaccine in infants and toddlers 6 months to 16 months of age (Cohort I) in India and the RSA when administered concomitantly with other age-recommended vaccines. * To describe the safety profile of MenACYW conjugate vaccine in infants and toddlers 6 weeks to 15 months of age (Cohort II) in India and the RSA when administered concomitantly with other age-recommended vaccines. * To describe the safety profile of age-recommended vaccines:

* in infants 6 weeks to 15 months of age (Cohort II) in India and the RSA when administered concomitantly with MenACYW conjugate vaccine. * in infants and toddlers 6 months to 16 months of age (Cohort I) in India and the RSA when administered concomitantly with MenACYW conjugate vaccine.

The duration of each participant's active participation in the study will be approximately 10 to 11 months for Cohort I and 13,5 to 14,5 months for Cohort II.

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Key information

Conditions

Meningococcal Immunisation Healthy Volunteers

Age range

6 week–6 month

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Investigational Site Number : 3560006, Chennai, India

Loading trial locations.

About this study

The duration of each participant's active participation in the study will be approximately 10 to 11 months for Cohort I and 13,5 to 14,5 months for Cohort II.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Cohort I: 6 months of age (180 to 209 days of age) on the day of the first study visit
  • Cohort II: 6-8 weeks of age (42 to 62 days of age) on the day of the first study visit
  • Healthy infants as determined by medical history, physical examination, and judgment of the Investigator
  • Participant and parent/ legally acceptable representative (LAR) are able to attend all scheduled visits and to comply with all study procedures
  • Cohort I: Z-score ≥ -2 SD on the Weight-for-age table of the WHO Child Growth Standards.
  • Cohort II: Born at full term of pregnancy (≥ 37 weeks) and with a birth weight ≥ 2.5 kg.

Exclusion criteria

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

  • Known or suspected congenital or acquired immunodeficiency*; or receipt of immunosuppressive therapy, such as anti-cancer chemotherapy or radiation therapy, within the preceding 6 months; or long-term systemic corticosteroid therapy (prednisone or equivalent for more than 2 consecutive weeks within the past 3 months).

*Note: Participants with a history of HIV but without evident severe immunosuppression can be included.

  • Family history of congenital or hereditary immunodeficiency, until the immune competence of the potential vaccine recipient is demonstrated.
  • Individuals with active tuberculosis.
  • History of meningococcal infection, confirmed either clinically, serologically, or microbiologically.
  • At high risk for meningococcal infection during the study (specifically, but not limited to, participants with persistent complement deficiency, with anatomic or functional asplenia, or participants travelling to countries with high endemic or epidemic disease).
  • History of intussusception.
  • History of any neurologic disorders, including any seizures and progressive neurologic disorders.
  • History of Guillain-Barré syndrome (GBS).
  • Known systemic hypersensitivity to any of the vaccine components, or history of a life-threatening reaction to the vaccine(s) used in the study or to a vaccine containing any of the same substances, including neomycin, gelatin, and yeast.
  • Verbal report of thrombocytopenia, as reported by the parent/LAR, contraindicating IM vaccination in the Investigator's opinion.
  • Bleeding disorder, or receipt of anticoagulants in the 3 weeks preceding inclusion, contraindicating IM vaccination in the Investigator's opinion.
  • Chronic illness (including, but not limited to, cardiac disorders, congenital heart disease, chronic lung disease, renal disorders, auto-immune disorders, diabetes, psychomotor diseases, and known congenital or genetic diseases) that, in the opinion of the Investigator, is at a stage where it might interfere with study conduct or completion.
  • Moderate or severe acute illness/infection (according to Investigator judgment) on the day of vaccination or febrile illness (temperature ≥ 38.0°C). A prospective participant should not be included in the study until the condition has resolved or the febrile event has subsided.
  • Receipt of any vaccine in the 4 weeks preceding the first study vaccination (except for Bacille Calmette-Guérin [BCG], birth dose OPV and birth dose of HepB vaccine) or planned receipt of any vaccine in the 4 weeks following each study vaccination except for the following vaccinations, which may be received at least 2 weeks before or 2 weeks after any study vaccination. This exception includes monovalent pandemic influenza vaccines, multivalent influenza vaccines, any COVID-19 vaccines, and administration of OPV on National Immunization Day in India.
  • Previous vaccination against meningococcal disease with either the study vaccine or another vaccine (ie, mono- or polyvalent, polysaccharide, or conjugate meningococcal vaccine containing serogroups A, C, Y, or W; or meningococcal B serogroup-containing vaccine).
  • For Cohort II: Previous vaccination against diphtheria, tetanus, pertussis, poliomyelitis (other than birth dose of OPV), Hepatitis A, measles, mumps, rubella, varicella; and of Hib, Streptococcus pneumoniae, and/or RV infection or disease.
  • For Cohort II: Previous vaccination with more than 1 dose of HepB vaccine.
  • Receipt of immune globulins, blood, or blood-derived products in the past 3 months.
  • Receipt of oral or injectable antibiotic therapy within 72 hours prior to the first blood draw.
  • Participation at the time of study enrollment (or in the 4 weeks preceding the first study vaccination) or planned participation during the present study period in another clinical study investigating a vaccine, drug, medical device, or medical procedure.
  • Identified as a natural or adopted child of the Investigator or employee with direct involvement in the proposed study.

Treatment and study plan

Meningococcal polysaccharide (serogroups A, C, Y, and W) tetanus toxoid conjugate vaccine

Biological

Liquid solution - intramuscular

Other names: MenACYW conjugate vaccine - MenQuadfi™

Meningococcal (Groups A, C, Y and W 135) Polysaccharide Diphtheria Toxoid Conjugate Vaccine

Biological

Liquid solution - intramuscular

Other names: Menactra®

Oral bivalent types 1 and 3; Poliomyelitis Vaccine (OPV)

Biological

Oral suspension - oral

Other names: BIOPOLIO® B1/3

Pneumoccocal Vaccine

Biological

Suspension for injection - intramuscular

Other names: Prevnar 13®

Measles, Mumps, and Rubella Vaccine live (MMR)

Biological

Lyophilized powder for injection - subcutaneous

Other names: TRESIVAC® PFS

DTwP-HepB-Hib-IPV vaccine

Biological

Suspension - intramuscular

Other names: EasySix™

DTaP-IPV-Hib-HepB vaccine

Biological

Liquid solution - intramuscular

Other names: Hexaxim®

Hepatitis A Vaccine

Biological

Lyophilized powder for injection - subcutaneous

Other names: Biovac®-A

Rotavirus vaccine

Biological

Oral solution - oral

Other names: RotaTeq®

Typhoid conjugate vaccine (TCV)

Biological

Suspension for injection - intramuscular

Other names: Typbar TCV®

Measles vaccine

Biological

Freeze-dried powder for reconstitution and injection - subcutaneous

Other names: MeasBio®

Varicella vaccine live

Biological

Sterile powder and diluent for injection - subcutaneous

Other names: VARIPED®

Primary outcomes

  1. Percentage of participants with anti-meningococcal serogroups A, C, Y, W antibody titers above predefined thresholds after 2 doses of MenACYW conjugate vaccine compared to 2 doses of Menactra® vaccine in infants and toddlers 6 months to 16 months of age

    Time frame: 30 days after the second vaccination

    Antibody (Ab) titers against meningococcal serogroups A, C, Y, and W will be measured in infants and toddlers 6 months to 16 months of age ([Group 1 + Group 3] versus [Group 2 + Group 4])

    The following threshold values will be considered: ≥ 1:8

  2. Percentage of participants with anti-meningococcal serogroups A, C, Y, W Ab titers above predefined thresholds after 3 doses of MenACYW conjugate vaccine in infants and toddlers 6 weeks to 15 months of age

    Time frame: 30 days after the booster vaccination

    Ab titers against meningococcal serogroups A, C, Y, and W will be measured in infants and toddlers 6 months to 15 months of age (Group 5 + Group 7)

    The following threshold values will be considered: ≥ 1:8

Secondary outcomes

  1. Geometric Mean Titers (GMTs) of Ab against meningococcal serogroups A, C, Y, and W when MenACYW conjugate vaccine administered concomitantly with other age-recommended vaccine in infants 6 weeks to 15 months of age

    Time frame: Baseline; 30 days after primary series of vaccination; Before and 30 days after booster vaccination

    Ab titers against meningococcal serogroups A, C, Y, and W will be measured Group 5 versus Group 6 in India Group 7 versus Group 8 in RSA Group 5 + Group 7 versus Group 6 + Group 8

  2. Geometric Mean Titers Ratio (GMTR) of Ab against meningococcal serogroups A, C, Y, and W when MenACYW conjugate vaccine administered concomitantly with other age-recommended vaccine in infants 6 weeks to 15 months of age

    Time frame: Baseline; 30 days after primary series of vaccination; Before and 30 days after booster vaccination

    Ab titers against meningococcal serogroups A, C, Y, and W will be measured Group 5 versus Group 6 in India Group 7 versus Group 8 in RSA Group 5 + Group 7 versus Group 6 + Group 8

  3. GMTs of Ab against meningococcal serogroups A, C, Y, and W when MenACYW conjugate vaccine or Menactra vaccine when administered concomitantly with other age-recommended vaccines in infants and toddlers 6 months to 16 months of age

    Time frame: Baseline; Before and 30 days after each vaccination

    Ab titers after vaccination with MenACYW conjugate vaccine or Menetra® will be measured Group 1 versus Group 2 in India Group 3 versus Group 4 in the RSA Group 1 + Group 3 versus Group 2 + Group 4

  4. GMTR of Ab against meningococcal serogroups A, C, Y, and W when MenACYW conjugate vaccine or Menactra vaccine when administered concomitantly with other age-recommended vaccines in infants and toddlers 6 months to 16 months of age

    Time frame: Baseline; Before and 30 days after each vaccination

    Ab titers after vaccination with MenACYW conjugate vaccine or Menetra® will be measured Group 1 versus Group 2 in India Group 3 versus Group 4 in the RSA Group 1 + Group 3 versus Group 2 + Group 4

  5. Percentage of participants with anti-meningococcal serogroups A, C, Y, and W Ab titers met the predefined criteria when MenACYW conjugate vaccine administered concomitantly with other age-recommended vaccine in infants 6 weeks to 15 months of age

    Time frame: Baseline; 30 days after primary series of vaccination; Before and 30 days after booster vaccination

    Ab titers against meningococcal serogroups A, C, Y, and W will be measured

    • hSBA titer ≥ 1:4 and ≥ 1:8
    • hSBA titer ≥ 4-fold rise from pre-vaccination to post-vaccination
    • hSBA vaccine seroresponse

  6. Percentage of participants with anti-meningococcal serogroups A, C, Y, and W Ab titers met the predefined criteria when MenACYW conjugate vaccine administered concomitantly with other age-recommended vaccine in infants and toddlers 6 to 16 months of age

    Time frame: Baseline; Before and 30 days after each vaccination

    Ab titers after vaccination with MenACYW conjugate vaccine or Menetra® will be measured

    • hSBA titer ≥ 1:4 and ≥ 1:8
    • hSBA titer ≥ 4-fold rise from pre-vaccination to post-vaccination
    • hSBA vaccine seroresponse

  7. GMCs of Ab against the antigens of age-recommended vaccines in infants and toddlers 6 weeks to 15 months of age

    Time frame: Baseline

    The following Ab concentrations will be measured:

    • Anti-pertussis Ab concentrations (pertussis toxin [PT], filamentous hemagglutinin [FHA]), fimbriae types 2, 3 [FIM], and pertactin [PRN])

  8. GMCR of Ab against the antigens of age-recommended vaccines in infants and toddlers 6 weeks to 15 months of age

    Time frame: Baseline

    The following Ab concentrations will be measured:

    • Anti-pertussis Ab concentrations (pertussis toxin [PT], filamentous hemagglutinin [FHA], fimbriae types 2, 3 [FIM], and pertactin [PRN])

  9. GMCs/GMTs of Ab against the antigens of age-recommended vaccines in infants and toddlers 6 weeks to 15 months of age

    Time frame: -30 days after:-Dose3 of DTwP-HepB-Hib-IPV/DTaP-IPV-Hib-HepB;-1ry series of PCV13;-measles,mumps & rubella: Dose1 in RSA;Dose2 in India;-1st dose of varicella vaccine -30 days at least after booster dose of PCV13 -Before & 30 days after 1ry series of RV

    The following Ab concentrations/titers will be measured:

    • against the antigens of DTwP-HepB-Hib/DTaP-IPV-Hib-HepB
    • against the antigens of PCV13
    • against the antigens of RV (serum RV immunoglobulin [Ig]A)
    • against the antigens of measles, mumps and rubella
    • against the antigens of varicella vaccine

  10. GMCRs/GMTRs of Ab against the antigens of age-recommended vaccines in infants and toddlers 6 weeks to 15 months of age

    Time frame: -30days after:-1ry series of DTwP-HepB-Hib-IPV/DTaP-IPV-Hib-HepB;-1ry series of PCV13;-measles,mumps & rubella:Dose1 in RSA;Dose2 in India;-1st dose of varicella vaccine -30days at least after booster dose of PCV13 -Before&30 days after 1ry series of RV

    The following Ab concentrations/titers will be measured:

    • against the antigens of DTwP-HepB-Hib-IPV/DTaP-IPV-Hib-HepB
    • against the antigens of PCV13
    • against the antigens of RV (serum RV immunoglobulin [Ig]A)
    • against the antigens of measles, mumps and rubella
    • against the antigens of varicella vaccine

  11. Percentage of participants with Ab concentrations/titers met the predefined criteria in infants and toddlers 6 weeks to 15 months of age

    Time frame: - 30 days after dose 3 of DTwP-HepB-Hib/DTaP-IPV-Hib-HepB - 30 days after primary series of PCV13 and 30 days after the booster dose of PCV13

    The following Ab concentrations/titers will be measured:

    • Anti-tetanus Ab ≥ 0.01 International Units (IU)/milliliter (mL), ≥ 0.1 IU/mL and > 1.0 IU/mL
    • Anti-diphtheria Ab ≥ 0.01 IU/mL, ≥ 0.1 IU/mL and > 1.0 IU/mL
    • Anti-polyribosyl-ribitol phosphate (PRP) Ab ≥ 0.15 micrograms (μg)/mL and ≥ 1.0 μg/mL
    • Pertussis vaccine seroresponse for anti-PT, and anti-PT, anti-FHA, anti-FIM, and anti-PRN
    • Anti-hepatitis B surface antigen (HBsAg) Ab ≥ 10 mIU/mL and ≥ 100 mIU/mL
    • Anti-poliovirus types 1, 2, and 3 Ab titers ≥ 1:8
    • Anti-pneumococcal Ab ≥ 0.35 μg/mL and ≥ 1.0 μg/mL

  12. Percentage of participants with Ab concentrations/titers met the predefined criteria in infants and toddlers 6 weeks to 15 months of age

    Time frame: 30 days after: - Primary series of RV - Dose 1 of measles, mumps and rubella in RSA - Dose 2 of measles, mumps and rubella in India - first dose of varicella vaccine

    The following Ab concentrations/titers will be measured:

    • Anti-RV seroresponse
    • Anti-measles Ab concentrations (serostatus cutoff: 255 mIU/mL)
    • Anti-mumps Ab concentrations (serostatus cutoff: 10 Mumps antibody units/mL)
    • Anti-rubella Ab concentrations (serostatus cutoff: 10 IU/mL)
    • Anti-varicella Ab concentrations (serostatus cutoff: 5gpELISA unit/mL)

  13. GMCs/GMTs of Ab against the antigens of age-recommended vaccines in infants and toddlers 6 months to 16 months of age

    Time frame: 30 days after: - first dose of varicella vaccine - the booster dose of PCV13 - Dose 1 of measles, mumps and rubella in RSA - Dose 2 of measles, mumps and rubella in India - after booster dose of DTwP-HepB-Hib-IPV

    The following Ab concentrations will be measured:

    • against the antigens of varicella
    • against the antigens of PCV13
    • against the antigens of measles, mumps and rubella
    • against the antigens of DTwP-HepB-Hib-IPV

  14. GMCRs/GMTRs of Ab against the antigens of age-recommended vaccines in infants and toddlers 6 months to 16 months of age

    Time frame: 30 days after: - first dose of varicella vaccine - the booster dose of PCV13 - Dose 1 of measles, mumps and rubella in RSA - Dose 2 of measles, mumps and rubella in India - after booster dose of DTwP-HepB-Hib-IPV

    The following Ab concentrations/titers will be measured:

    • against the antigen of varicella
    • against the antigens of PCV13
    • against the antigens of measles, mumps and rubella
    • against the antigens of DTwP-HepB-Hib-IPV

  15. Percentage of participants with Ab concentrations/titers met the predefined criteria in infants and toddlers 6 months to 16 months of age

    Time frame: 30 days after: - the booster dose of PCV13 - Dose 1 of measles, mumps and rubella in RSA - Dose 2 of measles, mumps and rubella in India - first dose of varicella vaccine

    The following Ab concentrations/titers will be measured:

    • anti-pneumococcal Ab concentrations ≥ 0.35 μg/mL and ≥ 1.0 μg/mL
    • anti-measles Ab concentrations (serostatus cutoff: 255 mIU/mL)
    • anti-mumps Ab concentrations (serostatus cutoff: 10 Mumps antibody units/mL)
    • anti-rubella Ab concentrations (serostatus cutoff: 10 IU/mL)
    • anti-varicella Ab concentrations (serostatus cutoff: 5gpELISA unit/mL)

  16. GMCs of Ab against the antigens of age-recommended vaccines in infants and toddlers 6 months to 16 months of age

    Time frame: Pre-booster dose vaccination of DTwP-HepB-Hib-IPV

    The following Ab concentrations will be measured:

    • Anti-pertussis Ab concentrations (pertussis toxin [PT], filamentous hemagglutinin [FHA], fimbriae types 2, 3 [FIM], and pertactin [PRN])

  17. GMCR of Ab against the antigens of age-recommended vaccines in infants and toddlers 6 months to 16 months of age

    Time frame: Pre-booster dose vaccination of DTwP-HepB-Hib-IPV

    The following Ab concentrations will be measured:

    • Anti-pertussis Ab concentrations (pertussis toxin [PT], filamentous hemagglutinin [FHA], fimbriae types 2, 3 [FIM], and pertactin [PRN])

  18. Percentage of participants with Ab concentrations/titers met the predefined criteria in infants and toddlers 6 months to 16 months of age

    Time frame: 30 days after booster dose of DTwP-HepB-Hib-IPV

    The following Ab concentrations/titers will be measured:

    • anti-tetanus Ab concentrations ≥ 0.01 IU/mL, ≥ 0.1 IU/mL and ≥ 1.0 IU/mL
    • anti-diphtheria Ab concentrations ≥ 0.01 IU/mL, and ≥ 0.1 IU/mL
    • anti-PRP Ab concentrations ≥ 0.15 µg)/mL and ≥ 1.0 μg/mL
    • pertussis vaccine seroresponse for anti-PT, anti-FHA, anti-FIM, and anti-PRN
    • anti-HBsAg Ab concentrations ≥ 10 mIU/mL and ≥ 100 mIU/mL
    • anti-poliovirus types 1, 2, and 3 Ab titers ≥ 1:8

  19. Number of participants reporting immediate adverse events (AEs)

    Time frame: Within 30 minutes post-vaccination

    Unsolicited (spontaneously reported) systemic AEs

  20. Percentage of participants reporting solicited injection site and systemic reactions

    Time frame: Within 7 days post-vaccination

    Solicited injection site reactions:

    • tenderness, erythema, swelling

    Solicited systemic reactions:

    • fever, vomiting, crying abnormal, drowsiness, appetite lost, irritability

  21. Number of participants reporting unsolicited AEs

    Time frame: Up to Day 31 post-vaccination

    Unsolicited AEs

  22. Number of participants reporting serious adverse events (SAEs)

    Time frame: From Day 1 to Month 18

    SAEs

Sponsors and collaborators

Lead sponsor

Sanofi Pasteur, a Sanofi Company

Industry

Registry information

Official study title

Immunogenicity and Safety of an Investigational Quadrivalent Meningococcal Conjugate Vaccine When Administered Concomitantly With Routine Pediatric Vaccines in Healthy Infants and Toddlers in India and the Republic of South Africa

Important dates

Study start
2023
Primary completion
2025
Study completion
2025
First posted
Apr 3, 2023
Registry last updated
Jan 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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