Immunogenicity, Reactogenicity and Safety of GlaxoSmithKline (GSK) Biologicals' Rotarix Porcine Circovirus (PCV)-Free Liquid Compared to Rotarix Liquid Given in 2-doses in Healthy Chinese Infants Starting at Age 6-16 Weeks

Phase 3

Completed

Conditions: Gastroenteritis

Interventions: Combination Product: GSK's liquid oral live attenuated HRV
Combination Product: PCV-free liquid formulation of GSK's oral live attenuated HRV

Registration Number: NCT06025695

Lead Sponsor: GlaxoSmithKline

Brief Summary: The purpose of this study is to evaluate the immunogenicity, reactogenicity and safety of the Porcine circovirus (PCV)-free liquid formulation of GlaxoSmithKline Biologicals' SA (GSK) oral live attenuated human rotavirus (HRV) study intervention compared to GSK's liquid oral live attenuated HRV study intervention in healthy Chinese infants 6 to 16 weeks of age at the time of the first study intervention administration.

Detailed Description: Not available

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 2000

Inclusion Criteria

Participants' parent(s)/legally acceptable representative(s) [LAR(s)], who, in the opinion of the investigator, can and will comply with the requirements of the protocol.
Written or witnessed/thumb printed informed consent obtained from the parent(s)/LAR(s) of the participant prior to performance of any study specific procedure.
A male or female with Chinese origin, between, and including, 6 and 16 weeks (42-112 days) of age at the time of the first study intervention administration.
Healthy participants as established by medical history and clinical examination before entering into the study.
Born after a gestation period of 36 to 42 weeks inclusive.

Exclusion Criteria

Medical conditions

Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination (no laboratory testing required).
History of severe combined immunodeficiency.
History of any reaction or hypersensitivity likely to be exacerbated by any component of the study intervention.
History of seizures or progressive neurological disease.
Family history of congenital or hereditary immunodeficiency.
Uncorrected congenital malformation of the gastrointestinal tract that would predispose for intussusception (IS).
History of IS.
Major congenital defects, or serious chronic illness as assessed by the investigator.
Previous confirmed occurrence of rotavirus gastroenteritis (RVGE).
Participants with confirmed or suspected Coronavirus Disease 2019 (COVID-19).

Prior/Concomitant therapy

Use of any investigational or non-registered product other than the study interventions during the period beginning 30 days before the first dose of study interventions (Day -29 to Day 1), or planned use during the study period.
Planned administration/administration of a vaccine not foreseen by the study protocol in the period starting 30 days before the first dose and ending 30 days after the second dose of study intervention administration*, with the exception of the inactivated influenza vaccine, which is allowed at any time during the study and other licensed routine childhood vaccinations.

*In case emergency mass vaccination for an unforeseen public health threat (e.g., a pandemic) is organized by public health authorities outside the routine immunization programme, the time period described above can be reduced if, necessary for that mass vaccination vaccine, provided it is licensed and used according to its Product Information.
Administration of immunoglobulins and/or any blood products or plasma derivatives from birth or planned administration during the study period.
Administration of long-acting immune-modifying drugs from birth or planned administration at any time during the study period.
Chronic administration of immunosuppressants or other immune-modifying drugs since birth. For corticosteroids, this will mean prednisone >= 0.5 milligram/kilogram (kg)/day, or equivalent. Inhaled and topical steroids are allowed.
Previous vaccination against RV.

Prior/Concurrent clinical study experience

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 vaccine/product.

Other exclusions

Child in care.

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
HRV Group	GSK's liquid oral live attenuated HRV	Participants receive 2 doses of GSK's liquid oral live attenuated HRV study intervention administered at Day 1 and Month 1, according to the immunization schedule for HRV study intervention licensed outside of China.
HRV PCV-free Group	PCV-free liquid formulation of GSK's oral live attenuated HRV	Participants receive 2 doses of the PCV-free liquid formulation of GSK's oral live attenuated HRV study intervention administered at Day 1 and Month 1, according to the immunization schedule for HRV study intervention licensed outside of China.

Primary Outcome Measures

Name	Time	Method
Percentage of Participants With Anti-rotavirus (RV) Immunoglobulin A (IgA) Antibody (Ab) Seroconversion Rate	At Month 2 (1-month post-Dose 2)	Seroconversion rate is defined as the percentage of participants who were initially seronegative (i.e., with anti-RV IgA Ab concentration below \[\<\] 20 unit per milliliter \[U/mL\] prior the first dose of study intervention) and developed anti-RV IgA Ab concentration greater than or equal to (\>=) 20 U/mL at Month 2 (1-month post-Dose 2).
Serum Anti-RV IgA Ab Concentrations Expressed as Geometric Mean Concentrations (GMCs)	At Month 2 (1-month post-Dose 2)

Secondary Outcome Measures

Name	Time	Method
Percentage of Participants With Serum Anti-RV IgA Ab Concentrations >= 90 U/mL	At Month 2 (1-month post-Dose 2)
Number of Participants Reporting Solicited Systemic Events	Within 14 days (the day of vaccination and 13 subsequent days) after each vaccination (occurring at Day 1 and Month 1)	Solicited systemic events include fever/pyrexia, diarrhoea, vomiting, irritability/fussiness, loss of appetite, cough/runny nose. Fever is defined as body temperature \>= 37.5 degrees Celsius (°C) and the preferred location for measuring temperature is the axilla. Any = occurrence of the event regardless of intensity grade or relation to the study vaccination.
Number of Participants Reporting Unsolicited Adverse Events (AEs)	Within 31 days (the day of vaccination and 30 subsequent days) after each vaccination (occurring at Day 1 and Month 1)	Unsolicited AEs include any AE reported in addition to those solicited during the clinical study. Also, any 'solicited' symptom with onset outside the specified period of follow-up for solicited symptoms is reported as an unsolicited adverse event. Any = occurrence the event regardless of intensity grade or relation to the study vaccination
Number of Participants Reporting Serious Adverse Events (SAEs)	From Day 1 to Month 7	An SAE is any untoward medical occurrence that results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization or results in disability/incapacity or in other situations that are considered serious as per medical or scientific judgment. Any = occurrence of the SAE regardless of intensity grade or relation to the study vaccination.