Study to Evaluate the Lot to Lot Consistency of SIIPL Meningococcal ACYWX Conjugate Vaccine and to Compare Its Safety and Immunogenicity With That of Licensed Meningococcal ACWY Vaccine Menactra® in Healthy Individuals 18-85 Years of Age

Study Overview
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Brief Summary
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This is a Phase 2/3, randomized, observer blind, multi-centre, controlled study to evaluate the safety, immune response and consistency of immune response of three consecutively manufactured lots of NmCV-5 in healthy individuals between the ages of 18 to 85 years (both inclusive). The immune response of NmCV-5 will also be statistically compared against a licensed conjugate vaccine against ACYW (Menactra). A total of 1640 subjects 18 to 85 years of age will be accrued contemporaneously across three age groups - 18 to 29 years, 30 to 60 years, and 61 to 85 years. Within each age group subjects will be randomly assigned in a 3:1 ratio to receive either NmCV-5 or Menactra. The NmCV-5 subjects in 18-29 year age group will be further randomized 1:1:1 into three different lots (Lot A, B & C) of NmCV-5. All the randomized subjects will receive a single dose of 0.5 ml of NmCV-5 or Menactra on Day 1. Post vaccination site visits are planned on Days 8, 29 and 180 and a telephonic call at Day 85.

Official Title
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A Phase 2/3, Randomized, Observer-blind, Controlled, Multi-Center Study to Evaluate the Lot to Lot Consistency of SIIPL Meningococcal ACYWX Conjugate Vaccine (NmCV-5) and to Compare Its Safety and Immunogenicity With That of Licensed Meningococcal ACWY Vaccine Menactra® in Healthy Individuals 18-85 Years of Age

Conditions
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Vaccine for Meningococcal Disease

Intervention / Treatment
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* Biological: NmCV-5
* Biological: Menactra


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or non-pregnant female 18 through 85 years of age, both inclusive, at the time of study vaccine administration. Provide written informed consent. The subject is resident of the study area and is willing to comply with study protocol requirements, including availability for all scheduled visits of the study. Healthy, as determined by medical history and clinical assessment of the investigator. Female subjects of childbearing potential must have a negative urine pregnancy test within 24 hours prior to study vaccine administration. Exclusion Criteria: Acute illness, at the time of study vaccine administration (once acute illness is resolved, if appropriate, as per investigator assessment, subject will be re-revaluated for eligibility). 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 90 days prior to vaccination. History of severe allergic reactions after previous vaccinations or hypersensitivity to any study vaccine component including tetanus, diphtheria and diphtheria toxoid (CRM197).

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 85 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: NmCV-5<br>A total of 1640 subjects 18 to 85 years of age will be accrued contemporaneously across three age groups - 18 to 29 years, 30 to 60 years, and 61 to 85 years. Within each age group subjects will be randomly assigned in a 3:1 ratio to receive either NmCV-5 or Menactra. The NmCV-5 subjects in 18-29 year age group will be further randomized 1:1:1 into three different lots (Lot A, B & C) of NmCV-5. Total 1230 subjects will be enrolled in NmCV-5 arm. | Biological: NmCV-5<br>* The NmCV-5 is a fixed-combination available as the lyophilized powder containing meningococcal groups A and X polysaccharides conjugated to tetanus toxoid and meningococcal groups C, W and Y polysaccharides conjugated to CRM197 protein. The vaccine will be reconstituted with normal saline just prior to administration. The NmCV-5 lyophilized powder component contains sucrose, sodium citrate and trometamol as excipients. This component is presented as a freeze-dried powder in a single dose vial. No preservative or adjuvant is present in the vaccine. The normal saline diluent is a sterile clear colorless liquid in a single dose glass ampoule.<br>|
| Active Comparator: Menactra<br>Subjects will be randomly assigned in a 3:1 ratio to receive either NmCV-5 or Menactra. In Menactra arm, total 410 subjects will be enrolled. | Biological: Menactra<br>* The control vaccine is the licensed meningococcal serogroups ACYW conjugate vaccine (Menactra), manufactured by Sanofi Pasteur Incorporated. Menactra is supplied as a single 0.5 mL dose formulated in sodium phosphate buffered isotonic sodium chloride solution to contain 4 mcg each of meningococcal A, C, Y, and W polysaccharides conjugated to approximately 48 mcg of diphtheria toxoid protein carrier. No preservative or adjuvant is added during manufacture.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| rSBA assay Geometric Mean Titers (GMTs) at Day 29 against serogroups A, C, W, Y and X in subjects 18 to 29 years of age. |  | 1 month after vaccination | 
| Percentage of subjects with seroresponse 28 days after vaccination in pooled NmCV-5 and Menactra vaccine groups |  | 28 days after immunization | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| rSBA GMTs at Days 1 and 29 against serogroups A, C, W, Y and X in pooled NmCV-5# and Menactra vaccine groups. |  | Days 1 and 29 |