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Low dose of iNTS-TCV

Phase 2

Salmonella Infections | Monoclonal antibody | Other |GSK plc|Last Updated: Apr 20, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment537
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07286370A Study to Evaluate Safety, Reactogenicity, and Immune Response of GVGH iNTS-TCV Vaccine Against Invasive Nontyphoidal Salmonella Disease and Typhoid Fever in InfantsPHASE2 RECRUITING 537Apr 1, 2026Apr 27, 2028Apr 20, 20261 The Gambia
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Study Endpoints
Primary Endpoints
Number of participants with solicited administration site events during 7 days after each study intervention administration [for infants 6 MOA]
At Day 1, Day 85 and Day 337

Solicited administration site events included pain, redness, and swelling.

Number of participants with solicited systemic events during 7 days after each study intervention administration [for infants 6 MOA]
At Day 1, Day 85 and Day 337

Solicited systemic events included Fever, Irritability/Fussiness, Loss of appetite, Somnolence (sleepiness/drowsiness) and Vomiting. Fever is defined as body temperature more than or equal to (\>=) 37.5 degrees Celsius (°C), measured from axilla.

Number of participants with unsolicited adverse events (AEs) during 28 days after each study intervention administration [for infants 6 MOA]
At Day 1, Day 85 and Day 337

An unsolicited AE is defined as an AE that was either not included in the list of solicited events or could be included in the list of solicited events but with an onset outside the specified period of follow-up for solicited events.

Number of participants with serious adverse events (SAEs) [for infants 6 MOA]
From the first study intervention administration (Day 1) until study end (Day 505).

An SAE is defined as any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, results in abnormal pregnancy outcomes or any other situation based on appropriate medical or scientific judgement.

Number of participants with AEs/SAEs leading to withdrawal from the study or discontinuation of study intervention [for infants 6 MOA]
From the first study intervention administration (Day 1) until study end (Day 505).
Number of participants with laboratory abnormalities [for infants 6 MOA]
At 7 days after each study intervention administration (Day 8, Day 92 and Day 344).
Number of participants with solicited administration site events during 7 days after each study intervention administration [for infants 6 WOA]
At Day 1, Day 57 and Day 232
Number of participants with solicited systemic events during 7 days after each study intervention administration [for infants 6 WOA]
At Day 1, Day 57 and Day 232
Number of participants with unsolicited adverse events (AEs) during 28 days after each study intervention administration [for infants 6 WOA]
At Day 1, Day 57 and Day 232
Number of participants with SAEs [for infants 6 WOA]
From the first study intervention administration (Day 1) until study end (Day 400).
Number of participants with AEs/SAEs leading to withdrawal from the study or discontinuation of study intervention [for infants 6 WOA]
From the first study intervention administration (Day 1) until study end (Day 400).
Number of participants with laboratory abnormalities [for infants 6 WOA]
At 7 days after each study intervention administration (Day 8, Day 64 and Day 239).
Geometric Mean concentration (GMC) ratio of anti- S. typhimurium (STm) and anti- Salmonella Enteritidis (SEn) O-antigen (OAg) immunoglobulin G (IgG) [for infants 6 MOA]
At 28 days after the second study intervention administration (Day 113)
GMC ratio of anti-Vi IgG [for infants 6 MOA]
At 28 days after the first study intervention administration (Day 29)
GMC ratio of anti-STm and anti-SEn OAg IgG concentrations [for infants 6 WOA]
At 28 days after the third study intervention administration (Day 260)
GMC ratio of anti-Vi IgG [for infants 6 WOA]
At 28 days after the third study intervention administration (Day 260)
Secondary Endpoints
GMC of anti-STm OAg, anti-SEn OAg and anti-Vi IgG before each study intervention administration [for infants 6 MOA]
At Day 1, Day 85 and Day 337
GMC of anti-STm OAg, anti-SEn OAg and anti-Vi IgG 28 days after each study intervention administration [for infants 6 MOA]
At Day 29, Day 113 and Day 365
GMC of anti-STm OAg, anti-SEn OAg and anti-Vi IgG before each study intervention administration [for infants 6 WOA]
At Day 1, Day 57 and Day 232
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Step 1a- Group 1 iNTS-TCV low dose (6 MOA)EXPERIMENTALParticipants 6 MOA receive 3 doses of a low dose of iNTS-TCV at Day 1, Day 85 and Day 337.
Step 1a Group 2- Control group (6MOA)ACTIVE_COMPARATORParticipants 6 MOA receive TYPHIBEV at Day 1, pneumococcal polysaccharide conjugate vaccine (13 valent) (Prevenar 13) at Day 85, and Nimenrix at Day 337.
Step 1b Group 3- iNTS-TCV full dose (6 MOA)EXPERIMENTALParticipants 6 MOA receive 3 doses of a full dose of iNTS-TCV at Day 1, Day 85 and Day 337.
Step 1b Group 4- iNTS-TCV full dose + Prevenar 13 (6 MOA)EXPERIMENTALParticipants 6 MOA receive 2 doses of a full dose of iNTS-TCV at Day 1 and Day 337 and 1 dose of Prevenar 13 at Day 85.
Step 1b Group 5- Control Group (6 MOA)ACTIVE_COMPARATORParticipants 6 MOA receive TYPHIBEV at Day 1, Prevenar 13 at Day 85, and Nimenrix at Day 337.
Step 1c- Group 6- iNTS-TCV low dose (6 WOA)EXPERIMENTALParticipants 6 WOA receive 3 doses of a low dose of iNTS-TCV at Day 1, Day 57 and Day 232.
Step 1c- Group 7- Control Group (6 WOA)ACTIVE_COMPARATORParticipants 6 WOA receive 2 doses of Nimenrix at Day 1 and Day 57, and 1 dose of TYPHIBEV at Day 232
Step 1d- Group 8- iNTS-TCV full dose (6 WOA)EXPERIMENTALParticipants 6 WOA receive 3 doses of a full dose of iNTS-TCV at Day 1, Day 57 and Day 232.
Step 1d- Group 9- Control Group (6 WOA)ACTIVE_COMPARATORParticipants 6 WOA receive 2 doses of Nimenrix at Day 1 and Day 57, and 1 dose of TYPHIBEV at Day 232
Step 2- Group 10- iNTS-TCV low dose (6 WOA)EXPERIMENTALParticipants 6 WOA receive 3 doses of a low dose of iNTS-TCV at Day 1, Day 57 and Day 232.
Step 2- Group 11- iNTS-TCV low dose+ Saline Group (6 WOA)EXPERIMENTALParticipants 6 WOA receive 1 dose of a saline on Day 1 and 2 doses of low dose of iNTS-TCV at Day 57 and Day 232.
Step 2- Group 12- iNTS-TCV full dose (6 WOA)EXPERIMENTALParticipants 6 WOA receive 3 doses of a full dose of iNTS-TCV at Day 1, Day 57 and Day 232.
Step 2- Group 13- iNTS-TCV full dose+ Saline Group (6 WOA)EXPERIMENTALParticipants 6 WOA receive 1 dose of saline on Day 1 and 2 doses of full dose of iNTS-TCV at Day 57 and Day 232.
Step 2- Group 14 - Control Group (6 WOA)ACTIVE_COMPARATORParticipants 6 WOA receive 2 doses of Nimenrix at Day 1 and Day 57, and 1 dose of TYPHIBEV at Day 232
Interventions
NameTypeDescription
Low dose of iNTS-TCVBIOLOGICALLow dose of iNTS-TCV vaccine will be administered.
Full dose of iNTS-TCVBIOLOGICALFull dose of iNTS-TCV vaccine will be administered.
TYPHIBEVBIOLOGICALTYPHIBEV vaccine will be administered.
Prevenar 13COMBINATION_PRODUCTPrevenar 13 vaccine will be administered.
NimenrixCOMBINATION_PRODUCTNimenrix vaccine will be administered.
SalineDRUGSaline will be administered.
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Eligibility Criteria
Age Range6 Weeks — 6 Months
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: Participants must: 1. Have signed/thumb-printed, voluntary, informed consent provided for them by their parent/Legally Authorized Representative (LAR) prior to performance of any study-specific procedure. 2. Be a male or female infant aged 6 months (±2 weeks) or 6 weeks (+2 wee...

Countries:The Gambia
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT07286370Status: NOT_YET_RECRUITING → RECRUITING
LOWMay 24, 2026NCT07286370studyFirstPostDate: changed