NCT05163561

Brief Summary

This Phase III study has been designed to compare the SII Inactivated Salk Polio Vaccine (Adsorbed) with Sii licensed IPV by testing the vaccine in infants (three doses administered 4 weeks apart, starting at 6-8 weeks of age) in order to demonstrate the non-inferiority in the induction of specific poliovirus neutralizing antibody (PVNA) to poliovirus type 1, type 2 and type 3 by these vaccines. The study will also evaluate lot-to-lot consistency in the manufacture of SII Inactivated Salk Polio Vaccine (Adsorbed) by demonstrating equivalence in the induction of PVNA across three production lots.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
1,072

participants targeted

Target at P75+ for phase_3

Timeline
Completed

Started Jan 2022

Shorter than P25 for phase_3

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

December 3, 2021

Completed
17 days until next milestone

First Posted

Study publicly available on registry

December 20, 2021

Completed
20 days until next milestone

Study Start

First participant enrolled

January 9, 2022

Completed
1.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 29, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 29, 2023

Completed
Last Updated

October 23, 2023

Status Verified

October 1, 2023

Enrollment Period

1.3 years

First QC Date

December 3, 2021

Last Update Submit

October 20, 2023

Conditions

Outcome Measures

Primary Outcomes (1)

  • Percentage of participants with type-specific seroconversion

    Percentage of participants with type-specific seroconversion\* on Day 28 after the third vaccination for SII Inactivated Salk Polio Vaccine (Adsorbed) and Sii Licensed IPV

    Day 28 after third vaccination

Secondary Outcomes (4)

  • Geometric Mean Titers

    Day 28 after third vaccination

  • Reverse cumulative distribution curves of antibody titers

    pre-vaccination and 28 days after third vaccination

  • Percentage of participants with type-specific seroprotection

    Day 28 after the third vaccination

  • Percentage of participants with type-specific post-vaccination titers ≥ 4-fold above the estimated titer of maternal antibody

    Day 28 after the third vaccination

Study Arms (4)

SII Inactivated Salk Polio Vaccine (Adsorbed) Lot A

EXPERIMENTAL

SII Inactivated Salk Polio Vaccine (Adsorbed) Lot A

Biological: SII Inactivated Salk Polio Vaccine (Adsorbed) - Lot A

SII Inactivated Salk Polio Vaccine (Adsorbed) Lot B

EXPERIMENTAL

SII Inactivated Salk Polio Vaccine (Adsorbed) Lot B

Biological: SII Inactivated Salk Polio Vaccine (Adsorbed) - Lot B

SII Inactivated Salk Polio Vaccine (Adsorbed) Lot C

EXPERIMENTAL

SII Inactivated Salk Polio Vaccine (Adsorbed) Lot C

Biological: SII Inactivated Salk Polio Vaccine (Adsorbed) - Lot C

Sii Licensed IPV

ACTIVE COMPARATOR

Sii Licensed IPV

Biological: Sii Licensed IPV

Interventions

SII Inactivated Salk Polio Vaccine (Adsorbed) produced by Serum Institute of India Pvt. Ltd., is a sterile suspension of three types of inactivated poliovirus: Type 1 (Mahoney), Type 2 (MEF-1), and Type 3 (Saukett). It is a highly purified, adjuvanted reduced antigen content of inactivated poliovirus vaccine.

SII Inactivated Salk Polio Vaccine (Adsorbed) Lot A

SII Inactivated Salk Polio Vaccine (Adsorbed) produced by Serum Institute of India Pvt. Ltd., is a sterile suspension of three types of inactivated poliovirus: Type 1 (Mahoney), Type 2 (MEF-1), and Type 3 (Saukett). It is a highly purified, adjuvanted reduced antigen content of inactivated poliovirus vaccine.

SII Inactivated Salk Polio Vaccine (Adsorbed) Lot B

SII Inactivated Salk Polio Vaccine (Adsorbed) produced by Serum Institute of India Pvt. Ltd., is a sterile suspension of three types of inactivated poliovirus: Type 1 (Mahoney), Type 2 (MEF-1), and Type 3 (Saukett). It is a highly purified, adjuvanted reduced antigen content of inactivated poliovirus vaccine.

SII Inactivated Salk Polio Vaccine (Adsorbed) Lot C

Poliomyelitis Vaccine (Inactivated), produced by Serum Institute of India Pvt. Ltd., is a sterile suspension of three types of inactivated poliovirus: Type 1 (Mahoney), Type 2 (MEF-1), and Type 3 (Saukett). Poliomyelitis Vaccine (Inactivated) is a highly purified, inactivated poliovirus vaccine.

Sii Licensed IPV

Eligibility Criteria

Age6 Weeks - 8 Weeks
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17)

You may qualify if:

  • Healthy infants as established by medical history and clinical examination before entering the study
  • Age: 6-8 weeks at the time of enrolment
  • Parental ability and willingness to provide informed consent
  • Parent who intends to reside in the area with the infant during the study period

You may not qualify if:

  • Prior receipt or intent to receive OPV/IPV/IPV containing vaccines during the study period.
  • Presence of significant malnutrition (weight-for-height z-score \< -3SD median)
  • Known or suspected impairment of immunological function based on medical history and physical examination.
  • Presence of any systemic disorder (cardiovascular, pulmonary, hepatic, renal, gastrointestinal, hematological, endocrine, immunological, dermatological, neurological, cancer, or autoimmune disease) as determined by medical history and / or physical examination which would compromise the participant's health or is likely to result in nonconformance to the protocol.
  • A known sensitivity or allergy to any components of the Investigational Product.
  • Receipt of immunoglobulin therapy and / or blood products since birth or planned administration during the study period
  • Planned concurrent participation in another clinical study at any point throughout the entire study period

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B)

Dhaka, 128, Bangladesh

Location

Related Publications (1)

  • Kulkarni PS, Zaman K, Desai SA, Bharati S, Goswami DR, Sharmeen AT, Rana S, Haque W, Khandelwal A, Manney S, Tyagi P, Gairola S, Zade JK, Pisal SS, Dhere RM, Poonawalla CS, Lamberigts C, Parulekar V, Potey AV. Safety and immunogenicity of a reduced-dose inactivated poliovirus vaccine versus a full-dose inactivated poliovirus vaccine in infants in Bangladesh: a double-blind, non-inferiority, randomised, controlled, phase 3 trial. Lancet Infect Dis. 2025 Oct;25(10):1128-1137. doi: 10.1016/S1473-3099(25)00215-4. Epub 2025 Jun 9.

MeSH Terms

Conditions

Poliomyelitis

Condition Hierarchy (Ancestors)

MyelitisCentral Nervous System InfectionsInfectionsEnterovirus InfectionsPicornaviridae InfectionsRNA Virus InfectionsVirus DiseasesCentral Nervous System DiseasesNervous System DiseasesSpinal Cord DiseasesNeuroinflammatory DiseasesNeuromuscular Diseases

Study Officials

  • K Zaman, MD

    International Centre for Diarrhoeal Disease Research, Bangladesh

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
The study is designed as a double-blind (observer blind) study. Observer-blind means that during study, the participants and the study personnel responsible for the evaluation of any study endpoints (e.g. safety and immunogenicity) will be unaware of the IP administered. The IP preparation and administration will be done by designated unblinded personnel who will not participate in any of the clinical study evaluations. Unblinded study personnel will prepare/reconstitute the IP out of view of the participant as well as the site staff. Considering the fact that the IP are likely to have distinct appearances, even when drawn into syringes, the syringes will be masked with an opaque wrapping before administration. After administration, the unblinded study personnel will complete accountability label on the carton and store the used products at designated area.
Purpose
PREVENTION
Intervention Model
PARALLEL
Model Details: Study participants aged 6 to 8 weeks will be enrolled and randomized into 1:1:1:1 ratio to receive either the SII inactivated Salk polio vaccine (adsorbed) from one of the three lots (Lot A or Lot B or Lot C) or the Sii licensed inactivated poliovirus vaccine (IPV).
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

December 3, 2021

First Posted

December 20, 2021

Study Start

January 9, 2022

Primary Completion

April 29, 2023

Study Completion

April 29, 2023

Last Updated

October 23, 2023

Record last verified: 2023-10

Data Sharing

IPD Sharing
Will not share

Locations