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iNTS-GMMA Dose C

Phase 2

Salmonella Infections | Monoclonal antibody | Infectious Disease |GSK plc|Last Updated: Sep 2, 2026

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment215

FDA Designations

No designations recorded

Clinical trial landscape

iNTS-GMMA Dose C · 1 trial · 1 indication

Phase 2 1
NCT06213506A Study on the Safety, Reactogenicity, and Immune Response to the GVGH iNTS-GMMA Vaccine Against Invasive Nontyphoidal Salmonella in Adults, Children, and InfantsSalmonella Infections
COMPLETED183 Analytics
PHASE2COMPLETED
A Study on the Safety, Reactogenicity, and Immune Response to the GVGH iNTS-GMMA Vaccine Against Invasive Nontyphoidal Salmonella in Adults, Children, and Infants
Salmonella InfectionsUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of adult participants 18-50 years of age with solicited administration site events
During 7 days after the first study intervention administration occurring at Day 1

The solicited administration site events are pain, redness and swelling.

Number of adult participants 18-50 years of age with solicited systemic events
During 7 days after the first study intervention administration occurring at Day 1

The solicited systemic events are fever, headache, myalgia, arthralgia and fatigue. Fever is defined as axillary temperature higher than or equal to (\>=) 38.0 degrees Celsius (°C)/100.4 degrees Fahrenheit (°F).

Number of adult participants 18-50 years of age with unsolicited adverse events (AEs)
During 28 days after the first study intervention administration occurring at Day 1

An unsolicited AE is 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 will be reported as an unsolicited adverse event.

Number of adult participants 18-50 years of age with serious adverse events (SAEs)
From first study intervention administration (Day 1) up to the end of study participation (Day 85)

An SAE is any untoward medical occurrence that results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, or results in abnormal pregnancy outcomes.

Number of adult participants 18-50 years of age with adverse events (AEs) leading to withdrawal from the study or discontinuation of study intervention
From first study intervention administration (Day 1) up to the end of study participation (Day 85)

An AE is any untoward medical occurrence (an unfavorable/unintended sign - including an abnormal laboratory finding), symptom, or disease (new or exacerbated) in a clinical study participant that is temporally associated with the study intervention. The AE may or may not be considered related to the study intervention. Any AEs that lead to discontinuation of study intervention and/or the study are considered under this outcome measure.

Number of adult participants 18-50 years of age with deviations from reference ranges or baseline values for hematological, renal and hepatic panel test results
At Day 8 (7 days after the first study intervention administration)

Clinically significant abnormal laboratory findings are those which are not associated with an underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition.

Number of child participants 24-59 months of age with solicited administration site events
During 7 days after the first study intervention administration occurring at Day 1

The solicited administration site events are pain, redness and swelling.

Number of child participants 24-59 months of age with solicited systemic events
During 7 days after the first study intervention administration occurring at Day 1

The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness and vomiting. Fever is defined as axillary temperature \>= 38.0 °C/100.4 degrees °F.

Number of child participants 24-59 months of age with unsolicited AEs
During 28 days after the first study intervention administration occurring at Day 1
Number of child participants 24-59 months of age with serious adverse events (SAEs)
From first study intervention administration (Day 1) up to the end of study participation (Day 85)
Number of child participants 24-59 months of age with AEs leading to withdrawal from the study or discontinuation of study intervention
From first study intervention administration (Day 1) up to the end of study participation (Day 85)
Number of child participants 24-59 months of age with deviations from reference ranges or baseline values for hematological, renal and hepatic panel test results
At Day 8 (7 days after the first study intervention administration)
Number of infant participants 9 months of age with solicited administration site events
During 7 days after the first study intervention administration occurring at Day 1

The solicited administration site events are pain, redness and swelling.

Number of infant participants 9 months of age with solicited systemic events
During 7 days after the first study intervention administration occurring at Day 1

The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness, and vomiting. Fever is defined as axillary temperature \>= 38.0 °C/100.4 degrees °F.

Number of infant participants 9 months of age with unsolicited adverse events (AEs)
During 28 days after the first study intervention administration occurring at Day 1
Number of infant participants 9 months of age with serious adverse events (SAEs)
From first study intervention administration (Day 1) up to the end of study participation (Day 337)
Number of infant participants 9 months of age with adverse events (AEs) leading to withdrawal from the study or discontinuation of study intervention
From first study intervention administration (Day 1) up to the end of study participation (Day 337)
Number of infant participants 9 months of age with deviations from reference range or baseline values for hematological, renal and hepatic panel test results
At Day 8 (7 days after the first study intervention administration)
Number of infant participants 6 weeks of age with solicited administration site events
During 7 days after the first study intervention administration occurring at Day 1

The solicited administration site events are pain, redness and swelling.

Number of infant participants 6 weeks of age with solicited systemic events
During 7 days after the first study intervention administration occurring at Day 1

The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness, and vomiting. Fever is defined as axillary temperature \>= 38.0 °C/100.4 degrees °F.

Number of infant participants 6 weeks of age with unsolicited adverse events (AEs)
During 28 days after the first study intervention administration occurring at Day 1
Number of infant participants 6 weeks of age with SAEs
From first study intervention administration (Day 1) up to 28 days after second study intervention (Day 85)
Number of infant participants 6 weeks of age with adverse events (AEs) leading to MR-VAC administration withdrawal from the study or discontinuation of study intervention
From first study intervention administration (Day 1) up to 28 days after second study intervention (Day 85)
Number of infant participants 6 weeks of age with deviations from reference ranges or baseline values for hematological, renal, and hepatic panel test results
At Day 8 (7 days after the first study intervention administration)
Number of infant participants 6 weeks of age with deviations from reference ranges or baseline values for hematological, renal, and hepatic panel test results at Day 64
At Day 64 (7 days after the second study intervention administration)

Secondary Endpoints

Number of infant participants 6 weeks of age with solicited administration site events
During 7 days after the third study intervention administration occurring at Day 232
Number of infant participants 6 weeks of age with solicited systemic events
During 7 days after the third study intervention administration occurring at Day 232
Number of infant participants 6 weeks of age with unsolicited AEs
During 28 days after the third study intervention administration occurring at Day 232
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Adults_Dose C GroupEXPERIMENTALAdults, 18-50 years of age, will receive 2 doses of the iNTS-GMMA Dose C (high dose) vaccine at Day 1 and Day 57.
Adults_Control GroupACTIVE_COMPARATORAdults, 18-50 years of age, will receive 1 dose of the MenACWY vaccine at Day 1 and 1 dose of Placebo at Day 57.
Children_Dose B GroupEXPERIMENTALChildren, 24-59 months of age, will receive 2 doses of the iNTS-GMMA Dose B (medium dose) vaccine at Day 1 and Day 57.
Children_Control B GroupACTIVE_COMPARATORChildren, 24-59 months of age, will receive 2 doses of the MenACWY vaccine at Day 1 and Day 57.
Children_Dose C GroupEXPERIMENTALChildren, 24-59 months of age, will receive 2 doses of the iNTS-GMMA Dose C (high dose) vaccine at Day 1 and Day 57.
Children_Control C GroupACTIVE_COMPARATORChildren, 24-59 months of age, will receive 2 doses of the MenACWY vaccine at Day 1 and Day 57.
Infants_9M_Dose A GroupEXPERIMENTALInfants, 9 months of age, will receive 3 doses of the iNTS-GMMA Dose A (low dose) vaccine at Day 1, Day 85 and Day 169. These infants will also receive an Expanded Program on Immunization (EPI) vaccination with Measles and Rubella Vaccine (MR-VAC) and Yellow Fever (YF) vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_9M_Control A GroupACTIVE_COMPARATORInfants, 9 months of age, will receive 2 doses of the MenACWY vaccine at Day 1 and Day 85 and 1 dose of the DTPa-HBV-IPV+Hib vaccine at Day 169. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_9M_Dose B GroupEXPERIMENTALInfants, 9 months of age, will receive 3 doses of the iNTS-GMMA Dose B (medium dose) vaccine at Day 1, Day 85 and Day 169. These infants will also receive an EPI vaccination withMR-VAC and YF vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_9M_Control B GroupACTIVE_COMPARATORInfants, 9 months of age, will receive 2 doses of the MenACWY vaccine at Day 1 and Day 85 and 1 dose of the DTPa-HBV-IPV+Hib vaccine at Day 169. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_9M_Dose C GroupEXPERIMENTALInfants, 9 months of age, will receive 3 doses of the iNTS-GMMA Dose C (high dose) vaccine at Day 1, Day 85 and Day 169. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_9M_Control C GroupACTIVE_COMPARATORInfants, 9 months of age, will receive 2 doses of the MenACWY vaccine at Day 1 and Day 85 and 1 dose of the DTPa-HBV-IPV+Hib vaccine at Day 169. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_6W_Dose A GroupEXPERIMENTALInfants, 6 weeks of age, will receive 3 doses of the iNTS-GMMA Dose A (low dose) vaccine at Day 1, Day 57 and at Day 232. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_6W_Control A GroupACTIVE_COMPARATORInfants, 6 weeks of age, will receive 3 doses of the MenACWY vaccine at Day 1, Day 57 and at Day 232 To allow completion of the vaccination schedule, a fourth dose of the MenACWY vaccine is administered after the trial ends, as per the licensed indication and in private vaccination settings. These infants also will receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_6W_Dose B GroupEXPERIMENTALInfants, 6 weeks of age, will receive 3 doses of the iNTS-GMMA Dose B (medium dose) vaccine at Day 1, Day 57 and at Day 232. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_6W_Control B GroupACTIVE_COMPARATORInfants ,6 weeks of age, will receive 3 doses of the MenACWY vaccine at Day 1, Day 57 and at Day 232. To allow completion of the vaccination schedule, a fourth dose of the MenACWY vaccine is administered after the trial ends, as per the licensed indication and in private vaccination settings. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_6W_Dose C GroupEXPERIMENTALInfants ,6 weeks of age, will receive 3 doses of the iNTS-GMMA Dose C (high dose) vaccine at Day 1, Day 57 and at Day 232. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.
Infants_6W_Control C GroupACTIVE_COMPARATORInfants ,6 weeks of age, will receive 3 doses of the MenACWY vaccine at Day 1, Day 57 and at Day 232. To allow completion of the vaccination schedule, a fourth dose of the MenACWY vaccine is administered after the trial ends, as per the licensed indication and in private vaccination settings. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.

Interventions

NameTypeDescription
iNTS-GMMA Dose CBIOLOGICAL-2 doses of iNTS-GMMA Dose C vaccine administered intramuscularly, at Day 1 and Day 57 to adults and children in the Adults\_Dose C and Children\_Dose C groups; -3 doses of iNTS-GMMA Dose C vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants\_9M\_Dose C group, and at Day 1, Day 57 and at Day 232 to infants in the Infants\_6W\_Dose C group.
iNTS-GMMA Dose BBIOLOGICAL-2 doses of iNTS-GMMA Dose B vaccine administered intramuscularly, at Day 1 and Day 57 to children in the Children\_Dose B group; -3 doses of iNTS-GMMA Dose B vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants\_9M\_Dose B group, and at Day 1, Day 57 and Day at 232 to infants in the Infants\_6W\_Dose B group.
iNTS-GMMA Dose ABIOLOGICAL3 doses of iNTS-GMMA Dose A vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants\_9M\_Dose A group, and at Day 1, Day 57 and Day at 232 to infants in the Infants\_6W\_Dose A group.
MenACWYBIOLOGICAL-1 dose of MenACWY vaccine administered intramuscularly at Day 1 to adults in the Adults\_Control group; -2 doses of MenACWY vaccine administered intramuscularly at Day 1 and Day 57 to children in the Children\_Control B and Children\_Control C groups, and at Day 1 and Day 85 to infants in the Infants\_9M\_Control A, Infants\_9M\_Control B and Infants\_9M\_Control C groups; -3 doses of MenACWY vaccine administered intramuscularly at Day 1, Day 57 and at Day 232 to infants in the Infants\_6W\_Control A, Infants\_6W\_Control B and Infants\_6W\_Control C groups. A 4th dose of MenACWY vaccine is administered after the trial ends, to infants in the aforementioned study groups, as per the licensed indication and in private vaccination settings.
DTPa-HBV-IPV+HibCOMBINATION_PRODUCT1 dose of DTPa-HBV-IPV+Hib vaccine administered intramuscularly at Day 169 to infants in the Infants\_9M\_Control A, Infants\_9M\_Control B and Infants\_9M\_Control C groups.
PlaceboDRUG1 dose of Placebo administered intramuscularly at Day 57 to adults in the Adults\_Control group.
Measles and Rubella vaccineBIOLOGICALMeasles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants\_9M\_Dose A, Infants\_9M\_Control A, Infants\_9M\_Dose B, Infants\_9M\_Control B, Infants\_9M\_Dose C and Infants\_9M\_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants\_6W\_Dose A, Infants\_6W\_Control A, Infants\_6W\_Dose B, Infants\_6W\_Control B, Infants\_6W\_Dose C and Infants\_6W\_Control C groups.
Yellow Fever vaccineBIOLOGICALYellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants\_9M\_Dose A, Infants\_9M\_Control A, Infants\_9M\_Dose B, Infants\_9M\_Control B, Infants\_9M\_Dose C and Infants\_9M\_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants\_6W\_Dose A, Infants\_6W\_Control A, Infants\_6W\_Dose B, Infants\_6W\_Control B, Infants\_6W\_Dose C and Infants\_6W\_Control C groups.
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Eligibility Criteria

Age Range6 Weeks to 50 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion criteria: All participants (adults, children, infants at 9 months of age and infants at 6 weeks of age) will be enrolled in the clinical site in Ghana and must satisfy ALL the following criteria at study entry: * Participants and/or participants' parent(s)/Legally Acceptable Representati...

Countries:Ghana
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Recent Changes (Last 90 Days)

HIGHSep 2, 2026NCT06213506Status: ACTIVE_NOT_RECRUITING → COMPLETED
HIGHSep 2, 2026NCT06213506Status: ACTIVE_NOT_RECRUITING → COMPLETED
HIGHSep 2, 2026NCT06213506Status: ACTIVE_NOT_RECRUITING → COMPLETED

Frequently asked questions about iNTS-GMMA Dose C

What is iNTS-GMMA Dose C used for?

iNTS-GMMA Dose C is an investigational vaccine being studied for the prevention of Salmonella Infections, specifically invasive nontyphoidal Salmonella disease. It is being evaluated in a Phase 2 clinical trial in Ghana involving adults, children, and infants as young as 6 weeks old.

Who makes iNTS-GMMA Dose C?

iNTS-GMMA Dose C is being developed by GSK plc, a biopharmaceutical company listed on the stock exchange under the ticker GSK. The vaccine is currently in Phase 2 clinical development for Salmonella Infections.

What phase is iNTS-GMMA Dose C in?

iNTS-GMMA Dose C is in Phase 2 clinical development. It is an investigational vaccine and has not been approved by regulatory authorities. The ongoing Phase 2 trial is assessing its safety, reactogenicity, and immune response in participants.

What clinical trials is iNTS-GMMA Dose C in?

iNTS-GMMA Dose C is being studied in a Phase 2 clinical trial registered as NCT06213506. This trial evaluates the safety, reactogenicity, and immune response of the GVGH iNTS-GMMA vaccine against invasive nontyphoidal Salmonella in adults, children, and infants. The trial is conducted in Ghana and has enrolled 183 participants.

Is iNTS-GMMA Dose C the same as GVGH iNTS-GMMA?

iNTS-GMMA Dose C is a specific dose level of the GVGH iNTS-GMMA vaccine. The clinical trial NCT06213506 refers to the vaccine as GVGH iNTS-GMMA, and iNTS-GMMA Dose C represents one of the dose formulations being tested in that study.