Study to Evaluate Eupolio(IPV)'s Safety, Long-term Protective Effect and Boosting Effect of One Booster Dose in the Three Primary Vaccination Plus Boosting Schedule, and Protective Effect in the Schedule With Bivalent OPV in Infants
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ClinicalTrials.gov Identifier: NCT05431933 |
Recruitment Status :
Not yet recruiting
First Posted : June 24, 2022
Last Update Posted : June 29, 2022
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Eupolio is inactivated poliovirus vaccine (IPV). Major purpose of this study is to evaluate safety of Eupolio in 2,000 infants. In addition to the safety, long-term protection after completion of the three primary vaccinations and extent of protective level after a single boosting dose of Eupolio will be evaluated.
As IPV plus bOPV vaccination schedule (3 doses of bOPV plus 2 doses of IPV in infant-toddle vaccination schedule) has been implemented in some countries, this study will also evaluate Eupolio's safety and protective effect in that schedule.
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Poliomyelitis Vaccine Reaction | Biological: Eupolio | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 2000 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Prevention |
Official Title: | A Multicenter, Open-label, Interventional Phase 3b Study to Evaluate the Safety, One-year Antibody Persistence, Priming Immune Responses of Three Doses of Eupolio Inj. (Inactivated Polio Vaccine (Sabin Strains)) and Immunogenicity of Two Doses of Eupolio Inj. Following Three Doses of bOPV in Infants |
Estimated Study Start Date : | January 2023 |
Estimated Primary Completion Date : | January 2025 |
Estimated Study Completion Date : | January 2025 |

Arm | Intervention/treatment |
---|---|
Experimental: Safety group
Three doses of Eupolio will be administered at 6, 10 and 14 weeks of age. Only safety will be evaluated for this arm.
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Biological: Eupolio
Inactivated Polio vaccine (Sabin strains) |
Experimental: Immunogenicity group 1 (4 Eupolio including 1 boosting dose)
Three doses of Eupolio will be administered at 6, 10 and 14 weeks of age, and additional single dose of Eupolio will be administered one year after the three primary vaccinations.
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Biological: Eupolio
Inactivated Polio vaccine (Sabin strains) |
Experimental: Immunogenicity group 2 (3bOPV+2 Eupolio)
bOPV will be administered at 6, 10 and 14 weeks of age, and Eupolio will be administered at 14 and 40 weeks of age.
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Biological: Eupolio
Inactivated Polio vaccine (Sabin strains) |
- Immediate reaction [ Time Frame: 30 minutes after each vaccination ]Any side effects that occur within 30 minutes after the vaccination
- Solicited adverse event [ Time Frame: 7 days after each vaccination ]Expected local or systemic side effects after vaccination
- Unsolicited adverse event [ Time Frame: 28 days after each vaccinations ]All unwanted or bad events after vaccination other than solicited adverse event
- Seroprotection rate [ Time Frame: 4 weeks after the third vaccination, 52 weeks after the third vaccination and 7 days after the boosting vaccination in the 4 Eupolio group/ 4 weeks after the first and second vaccination in the 3bOPV+2Eupolio group ]Proportion of infants who have more than 8 protective antibody titers
- Geometric mean titers of neutralizing antibody against polio antigens [ Time Frame: 4 weeks after the third vaccination, 52 weeks after the third vaccination and 7 days after the boosting vaccination in the 4 Eupolio group / 4 weeks after the first and second vaccination in the 3bOPV+2Eupolio group ]Geometric mean titers and log2 titers for protective antibody against poliovirus type 1, 2, and 3
- Priming response [ Time Frame: 7 days after the boosting vaccination in the 4 Eupolio group ]Proportion of infants who have more than 8 protective antibody titers after boosting dose, depending on protective state before boosting dose.
- Seroconversion rate [ Time Frame: 4 weeks after the third vaccination in the 4 Eupolio group / 4 weeks after the first and second vaccination in the 3bOPV+2Eupolio group ]Proportion of infants who have more than 8 protective antibody titers after three primary vaccinations, depending on protective state before vaccination.

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Ages Eligible for Study: | 6 Weeks to 8 Weeks (Child) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Infants in stable health
- Male or female 6 to 8 weeks of age
- Signed informed consent by the infant's parent(s) or legally acceptable representative(s)
Exclusion Criteria:
- Known or suspected poliomyelitis
- Known or suspected febrile(symptom of a fever), or chronic illnesses
- Fever ≥ 38.0℃/100.4℉ within 3 days prior to study registration or intake of drug preventing fever
- Known or suspected immune disorders (abnormal activity in protective system in human body) or received immunosuppressive therapy (treatment for weaken protective system in human body)
- Previous use of blood or blood-derived products
- Previous use of polio vaccines
- Seizures (temporary abnormalities in muscle tone or movements due to abnormal activity in the brain)
- Bleeding disorders
- Household contact or intimate exposure with a confirmed case of polio
- Any history of allergy (hypersensitivity) to the components of the polio vaccine
- Participation in another interventional clinical trial simultaneously or within 30 days

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05431933
Contact: Study Lead | +82-2-3777-1114 | yangyj@lgchem.com |
Responsible Party: | LG Chem |
ClinicalTrials.gov Identifier: | NCT05431933 |
Other Study ID Numbers: |
LG-VCCL002 |
First Posted: | June 24, 2022 Key Record Dates |
Last Update Posted: | June 29, 2022 |
Last Verified: | June 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Poliomyelitis Myelitis Central Nervous System Infections Infections Enterovirus Infections Picornaviridae Infections |
RNA Virus Infections Virus Diseases Central Nervous System Diseases Nervous System Diseases Spinal Cord Diseases Neuromuscular Diseases |