RECRUITING

A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine When Given to Healthy Children 12 to 15 Months of Age

Conditions

Chickenpox Chicken pox VNS Varicella Varivax Healthy Children

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Study Overview

This clinical trial focuses on testing the efficacy of different digital interventions to promote re-engagement in cancer-related long-term follow-up care for adolescent and young adult (AYA) survivors of childhood cancer.

Description

The purpose of this study is to assess the consistency of immune response to three different lots of GSK's investigational varicella vaccine (VNS Vaccine), and to compare the safety and immune response of VNS vaccine to an already approved varicella vaccine (VV) known as Varivax. The study will be conducted in healthy children aged 12 to 15 months, who have neither contracted varicella nor received a varicella vaccination.

Official Title

A Phase 3a, Observer-blind, Randomized, Controlled Study to Demonstrate Lot-to-lot Consistency and Evaluate the Immunogenicity and Safety of an Investigational Varicella Vaccine Compared With Varivax, Administered as a First Dose to Healthy Children 12 to 15 Months of Age

Quick Facts

Study Start:2025-01-10

Study Completion:2027-05-13

Study Type:Not specified

Phase:Not Applicable

Enrollment:Not specified

Status:RECRUITING

Study ID

NCT06740630

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Ages Eligible for Study:12 Months to 15 Months

Sexes Eligible for Study:ALL

Accepts Healthy Volunteers:Yes

Standard Ages:CHILD

Inclusion Criteria	Exclusion Criteria
* Participant's parent(s) Legally acceptable representatives /(LAR\[s\]), who, in the opinion of the investigator, can and will comply with the requirements of the protocol (e.g., completion of the eDiaries, return for follow-up visits). * Written or witnessed/thumb printed informed consent obtained from the participant's parent(s)/LAR(s) prior to performance of any study-specific procedure. * Healthy participants as established by medical history and clinical examination before entering into the study. * A male or female between, and including, 12 to 15 months of age (i.e., from the day of 1-year birthday until the day before 16 months of age) at the time of the administration of study interventions. * Only for children in countries where PCV is recommended at 12 to 15 months of age as per national immunization schedule and provided as part of the study interventions: * Participant who previously received the primary series of PCV in the first year of life with last dose at least 60 days prior to study entry.	* History of any reaction or hypersensitivity likely to be exacerbated by any component of the study interventions. * Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination. * Hypersensitivity to latex. * Major congenital defects, as assessed by the investigator. * Recurrent history of uncontrolled neurological disorders or seizures. * History of varicella disease. * Active untreated tuberculosis. * Any other clinical condition that, in the opinion of the investigator, might pose additional risk to the participant due to participation in the study. * Use of any investigational or non-registered product (drug, vaccine or invasive medical device) other than the study interventions during the period beginning 30 days before the dose of study interventions administration (Day -29 to Day 1), or their planned use during the study period. * Planned administration of a vaccine in the period starting 30 days before the dose and ending 43 days after the dose of study interventions administration\* (Visit 2) with the exception of inactivated influenza vaccine which may be given at any time during the study and administered at a different location than the study interventions. * Chronic administration of immune-modifying drugs (defined as more than 14 consecutive days in total) and/or planned use of long-acting immune modifying treatments at any time up to the end of the study. * Up to 90 days prior to the study intervention administration: * For corticosteroids, this will mean prednisone equivalent \>=0.5 mg/kg/day with maximum of 20 mg/day for pediatric participants. Inhaled and topical steroids are allowed. * Administration of immunoglobulins and/or any blood products or plasma derivatives. * Up to 180 days prior to study interventions administration: long acting immune-modifying drugs including among others immunotherapy (e.g., tumor necrosis factor-inhibitors), monoclonal antibodies (except the ones not interfering with the immune response to the study vaccines, e.g., nirsevimab), antitumoral medication. * Previous vaccination against measles, mumps, and rubella. * Previous vaccination against hepatitis A virus. * Previous vaccination against varicella virus. * Only for children in countries where PCV is recommended at 12 to 15 months of age as per national immunization schedule and provided as part of the study interventions, participant who previously received a booster dose of any PCV. * Concurrently participating in another clinical study, at any time during the study period, in which the participant has been or will be exposed to an investigational or a non-investigational intervention (drug/invasive medical device). * Child in care. * Any study personnel's immediate dependents, family, or household members. * Participants with the following high-risk individuals in their household: * Immunocompromised individuals. * Pregnant women without documented history of varicella. * Newborn infants of mothers without documented history of varicella. * Newborn infants born less than (\<) 28 weeks of gestation.

Inclusion Criteria

Exclusion Criteria

* Participant's parent(s) Legally acceptable representatives /(LAR\[s\]), who, in the opinion of the investigator, can and will comply with the requirements of the protocol (e.g., completion of the eDiaries, return for follow-up visits).
* Written or witnessed/thumb printed informed consent obtained from the participant's parent(s)/LAR(s) prior to performance of any study-specific procedure.
* Healthy participants as established by medical history and clinical examination before entering into the study.
* A male or female between, and including, 12 to 15 months of age (i.e., from the day of 1-year birthday until the day before 16 months of age) at the time of the administration of study interventions.
* Only for children in countries where PCV is recommended at 12 to 15 months of age as per national immunization schedule and provided as part of the study interventions:
* Participant who previously received the primary series of PCV in the first year of life with last dose at least 60 days prior to study entry.

* History of any reaction or hypersensitivity likely to be exacerbated by any component of the study interventions.
* Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination.
* Hypersensitivity to latex.
* Major congenital defects, as assessed by the investigator.
* Recurrent history of uncontrolled neurological disorders or seizures.
* History of varicella disease.
* Active untreated tuberculosis.
* Any other clinical condition that, in the opinion of the investigator, might pose additional risk to the participant due to participation in the study.
* Use of any investigational or non-registered product (drug, vaccine or invasive medical device) other than the study interventions during the period beginning 30 days before the dose of study interventions administration (Day -29 to Day 1), or their planned use during the study period.
* Planned administration of a vaccine in the period starting 30 days before the dose and ending 43 days after the dose of study interventions administration\* (Visit 2) with the exception of inactivated influenza vaccine which may be given at any time during the study and administered at a different location than the study interventions.
* Chronic administration of immune-modifying drugs (defined as more than 14 consecutive days in total) and/or planned use of long-acting immune modifying treatments at any time up to the end of the study.
* Up to 90 days prior to the study intervention administration:
* For corticosteroids, this will mean prednisone equivalent \>=0.5 mg/kg/day with maximum of 20 mg/day for pediatric participants. Inhaled and topical steroids are allowed.
* Administration of immunoglobulins and/or any blood products or plasma derivatives.
* Up to 180 days prior to study interventions administration: long acting immune-modifying drugs including among others immunotherapy (e.g., tumor necrosis factor-inhibitors), monoclonal antibodies (except the ones not interfering with the immune response to the study vaccines, e.g., nirsevimab), antitumoral medication.
* Previous vaccination against measles, mumps, and rubella.
* Previous vaccination against hepatitis A virus.
* Previous vaccination against varicella virus.
* Only for children in countries where PCV is recommended at 12 to 15 months of age as per national immunization schedule and provided as part of the study interventions, participant who previously received a booster dose of any PCV.
* Concurrently participating in another clinical study, at any time during the study period, in which the participant has been or will be exposed to an investigational or a non-investigational intervention (drug/invasive medical device).
* Child in care.
* Any study personnel's immediate dependents, family, or household members.
* Participants with the following high-risk individuals in their household:
* Immunocompromised individuals.
* Pregnant women without documented history of varicella.
* Newborn infants of mothers without documented history of varicella.
* Newborn infants born less than (\<) 28 weeks of gestation.

Contacts and Locations

Study Contact

US GSK Clinical Trials Call Center

CONTACT

877-379-3718

GSKClinicalSupportHD@gsk.com

EU GSK Clinical Trials Call Center

CONTACT

+44 (0) 20 89904466

GSKClinicalSupportHD@gsk.com

Study Locations (Sites)

GSK Investigational Site

Tampa, Florida, 33613

United States

Collaborators and Investigators

Sponsor: GlaxoSmithKline

Study Record Dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

Study Start Date2025-01-10

Study Completion Date2027-05-13

Study Record Updates

Study Start Date2025-01-10

Study Completion Date2027-05-13

Terms related to this study

Keywords Provided by Researchers

Chicken pox
VNS
Varicella
Varivax
Healthy Children

Additional Relevant MeSH Terms

Chickenpox