Clinical Study of Meningococcal ACYWX Conjugate Vaccine, in 12-16 Month Olds

NCT ID: NCT03295318

Last Updated: 2025-05-25

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE2
• Total Enrollment: 375 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2017-11-15
• Study Completion Date: 2018-08-31

Brief Summary

Out of the 13 identified serogroups of Neisseria meningitidis (Nm) the six serogroups (A, B, C, W, Y and X) are responsible for majority of infections. Presently available vaccines effectively protect against A, B, C, W and Y serogroups; but no vaccine that is protective against serogroup X is available yet.

Serum Institute of India Private Limited (SIIPL) has developed a conjugate vaccine against serogroups A, C, Y, W and X (NmCV-5).

The first-in-human Phase 1 study was among 60 healthy adults in USA did not show no any safety issues.

This phase 2 study is designed to evaluate safety and immunogenicity of the non-adjuvanted and adjuvanted formulations of NmCV-5 in healthy children 12-16 months of age, in comparison with the licensed quadrivalent meningococcal conjugate vaccine (Menactra®).

Both vaccines will be administered in two dose schedule 3 months apart. among vaccine-naïve healthy subjects in Mali. Safety will be assessed by collecting solicited reactions till day 7 post each dose whereas adverse events will be collected throughout the study. Each subject will be followed up for 84 days post each vaccine dose.

The vaccine immunogenicity will measured using a rabbit complement serum bactericidal activity assay (rSBA).

Conditions

Meningitis, Meningococcal

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: QUADRUPLE

Study Groups

Adjuvanted study formulation NmCV-5

Subjects in this arm will receive adjuvanted formulation of polyvalent conjugated vaccine against meningococcal serogroups A,C,Y,W & X.

Dose to be administered is 0.5 mL intramuscularly in a two dose series separated by atleast 84 days.

Group Type: EXPERIMENTAL

Adjuvanted study formulation NmCV-5

Intervention Type: BIOLOGICAL

Adjuvanted formulation of polyvalent conjugate meningococcal vaccine against serogroups A,C,Y,W\&X (NmCV-5) is available as lyophilised powder of polysacchride antigens A\&X conjugated to tetanus toxoid and C,Y\&W conjugated to CRM protein. The diluent contains Alum as adjuvant with Normal Saline. Each antigen content is 5 micrograms per 0.5 mL dose of vaccine

Non-adjuvanted study formulation NmCV-5

Subjects in this arm will receive non-adjuvanted formulation of polyvalent conjugated vaccine against meningococcal serogroups A,C,Y,W & X.

Dose to be administered is 0.5 mL intramuscularly in a two dose series separated by atleast 84 days.

Group Type: EXPERIMENTAL

Non-adjuvanted study formulation NmCV-5

Intervention Type: BIOLOGICAL

Non-adjuvanted formulation of polyvalent conjugate meningococcal vaccine against serogroups A,C,Y,W\&X (NmCV-5) is available as lyophilised powder of polysacchride antigens A\&X conjugated to tetanus toxoid and C,Y\&W conjugated to CRM protein. The diluent contains Normal Saline. Each antigen content is 5 micrograms per 0.5 mL dose of vaccine.

Menactra

Subjects in this arm will licensed quadrivalent conjugated vaccine against meningococcal serogroups A,C,Y, & W viz. Menactra.

Dose to be administered is 0.5 mL intramuscularly in a two dose series separated by atleast 84 days.

Group Type: ACTIVE_COMPARATOR

Menactra

Intervention Type: BIOLOGICAL

Menactra is available as ready to used solution containing polysacchride antigens A,C,Y\&WX conjugated to diphtheria toxoid. Each antigen content is 4 micrograms per 0.5 mL dose of vaccine.

Interventions

Non-adjuvanted study formulation NmCV-5

Non-adjuvanted formulation of polyvalent conjugate meningococcal vaccine against serogroups A,C,Y,W\&X (NmCV-5) is available as lyophilised powder of polysacchride antigens A\&X conjugated to tetanus toxoid and C,Y\&W conjugated to CRM protein. The diluent contains Normal Saline. Each antigen content is 5 micrograms per 0.5 mL dose of vaccine.

Intervention Type: BIOLOGICAL

Adjuvanted study formulation NmCV-5

Adjuvanted formulation of polyvalent conjugate meningococcal vaccine against serogroups A,C,Y,W\&X (NmCV-5) is available as lyophilised powder of polysacchride antigens A\&X conjugated to tetanus toxoid and C,Y\&W conjugated to CRM protein. The diluent contains Alum as adjuvant with Normal Saline. Each antigen content is 5 micrograms per 0.5 mL dose of vaccine

Intervention Type: BIOLOGICAL

Menactra

Menactra is available as ready to used solution containing polysacchride antigens A,C,Y\&WX conjugated to diphtheria toxoid. Each antigen content is 4 micrograms per 0.5 mL dose of vaccine.

Intervention Type: BIOLOGICAL

Other Intervention Names

MenACYWX; Adj MenACYWX; MenACYW-D

Eligibility Criteria

Inclusion Criteria

• Male and female children between 12 months and 16 months old inclusive (minimum 365 days of age and maximum 16 months plus 29 days of age);
• For whom parent(s)/legal guardian(s) have given written informed consent after the nature of the study has been explained according to local regulatory requirements;
• Who the investigator believes that their parent(s)/ guardian(s) will be available for all the subject visits and would comply with the requirements of the protocol (e.g., timely reporting of adverse events, availability for study site visits and home visits);
• Individuals in good health as determined by the outcome of medical history, physical examination and clinical judgment of the investigator.
• Individuals who completed their local infant EPI schedule through 9 months of age (except MenAfriVac dose). A birth dose of OPV is not required)

Exclusion Criteria

• History of any meningococcal vaccine administration.
• Current or previous, confirmed or suspected disease caused by N. meningitidis.
• Household contact with and/or intimate exposure to an individual with any laboratory confirmed N. meningitidis infection within 60 days of enrolment.
• History of severe allergic reactions after previous vaccinations or hypersensitivity to any study vaccine component including tetanus, diphtheria and diphtheria toxoid (CRM197).
• Acute or chronic, clinically significant pulmonary, cardiovascular, metabolic, neurological, hepatic, or renal functional abnormality, as determined by medical history or physical examination.
• Any confirmed or suspected condition with impaired/altered function of immune system (immunodeficient or autoimmune conditions).
• Have any bleeding disorder which is considered as a contraindication to intramuscular injection or blood draw.
• Severe acute malnutrition.
• A family history of congenital or hereditary immunodeficiency.
• History of either hepatitis B or hepatitis C virus infection or human immunodeficiency virus infection.
• Major congenital defects.
• Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs within three months prior to the study vaccination or planned use throughout the study period. (For corticosteroids, this means prednisone, or equivalent, ≥ 0.5 mg/kg per day. Inhaled, intranasal and topical steroids are allowed).
• Administration of blood, blood products and/or plasma derivatives or any parenteral immunoglobulin preparation in the past 3 months or planned use throughout the study period.
• Administration of any vaccine within 28 days prior to enrolment in the study or planned administration of any vaccine within 14 days before or after any study vaccination.
• Use of any investigational or non-registered drug or vaccine within 30 days prior to the administration of study vaccines or planned during the study.
• Malaria infection as confirmed by a Rapid Diagnostic Test.
• Individuals who are close family members of individuals conducting this study.
• Have experienced a moderate or severe acute infection and/or fever (defined as temperature ≥ 37.5°C) within 3 days prior to enrolment.
• Have received systemic antibiotic treatment within 3 days prior to enrolment.
• Non-residence in the study area or intent to move out within six months.
• Any condition which, in the opinion of the investigator, might pose additional risk to the subject due to participation in the study

• Minimum Eligible Age: 12 Months
• Maximum Eligible Age: 16 Months
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

PATH

OTHER

Sponsor Role: collaborator

Serum Institute of India Pvt. Ltd.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Centre pour le Développement des Vaccins du Mali, ex-Institut Marchoux, Ministry of Health, BP251

Bamako, , Mali

Countries

Mali

References

Tapia MD, Sow SO, Naficy A, Diallo F, Haidara FC, Chaudhari A, Martellet L, Traore A, Townsend-Payne K, Borrow R, Hosken N, Smolenov I, Pisal SS, LaForce FM, Dhere RM, Kapse D, Tang Y, Alderson MR, Kulkarni PS. Meningococcal Serogroup ACWYX Conjugate Vaccine in Malian Toddlers. N Engl J Med. 2021 Jun 3;384(22):2115-2123. doi: 10.1056/NEJMoa2013615.

Reference Type: DERIVED

PMID: 34077644 (View on PubMed)

Provided Documents

Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Other Identifiers

CVIA-058

Identifier Type: OTHER

Identifier Source: secondary_id

ACYWX-002

Identifier Type: -

Identifier Source: org_study_id