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Candidate UTI vaccine low dose formulation 1

Phase 1

Urinary Tract Infections | Vaccine | Nephrology |GSK plc|Last Updated: Apr 21, 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-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment448
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06702449A Study on the Safety and Immune Response of a Urinary Tract Infection (UTI) Vaccine in Adults 18-64 Years of Age and Clinical Efficacy in Females 18-64 Years of AgePHASE1 RECRUITING 448Nov 19, 2024May 31, 2027Apr 21, 20268 United States, South Africa
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Study Endpoints
Primary Endpoints
Part 1 and 2: Number of participants reporting solicited administration site adverse events (AEs)
During the 7 days follow-up period post-Dose 1 (study intervention administered at Day 1)

Solicited administration site events include pain, redness and swelling at administration site.

Part 1 and 2: Number of participants reporting solicited administration site AEs
During the 7 days follow-up period post-Dose 2 (study intervention administered at Day 61)

Solicited administration site events include pain, redness and swelling at administration site.

Part 1 and 2: Number of participants reporting solicited systemic AEs
During the 7 days follow-up period post-Dose 1 (study intervention administered at Day 1)

Solicited systemic events include fever, headache, myalgia (muscle pain), arthralgia (joint pain), and fatigue (tiredness). Fever is defined as temperature greater than or equal to (\>=) 38.0°C and preferred location for measuring temperature is the axilla.

Part 1 and 2: Number of participants reporting unsolicited AEs
During the 30 days follow-up period post-Dose 1 (study intervention administered at Day 1)

An unsolicited AE is an AE that is 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.

Part 1 and 2: Number of participants reporting any immediate unsolicited AEs
During the 60 minutes follow-up period post-Dose 1 (study intervention administered at Day 1)

An unsolicited AE is an AE that is 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.

Part 1 and 2: Number of participants reporting serious adverse events (SAEs)
From Day 1 (Dose 1 administration) until Day 426 (end of follow-up)

An SAE is defined as any untoward medical occurrence that results in death, is life threatening, requires hospitalization or prolongs existing hospitalization, results in disability/incapacity or other medically significant events.

Part 1 and 2: Number of participants reporting potential immune-mediated diseases (pIMDs) leading to study withdrawal
From Day 1 (Dose 1 administration) until Day 426 (end of follow-up)

pIMDs are a subset of Adverse Events of Special Interest (AESIs) that include autoimmune diseases and other inflammatory and/or neurologic disorders of interest which may or may not have an autoimmune etiology.

Part 1 and 2: Number of participants reporting medically-attended adverse events (MAAEs) leading to study withdrawal
From Day 1 (Dose 1 administration) until Day 426 (end of follow-up)

An MAAE is defined as an unsolicited AE, such as a symptom or illness, which required hospitalization, or emergency room visit, or visit to/by a health care provider.

Part 1 and 2: Number of participants reporting AEs leading to study withdrawal
From Day 1 (Dose 1 administration) until Day 426 (end of follow-up)

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study intervention, whether or not considered related to the study intervention.

Part 1: Number of participants with hematology or biochemistry abnormalities or changes in baseline value
At 7 days post-Dose 1 (Day 8) compared with baseline (pre-Dose 1, Day 1)
Part 2: Incidence rate (IR) of the first occurrence of a urine culture confirmed UTI due to E. coli in the investigational group compared to the IR in placebo group
From 14 days (Day 75) up to 12 months (Day 426) post-Dose 2
Secondary Endpoints
Part 2: IR of the total number of occurrences of urine culture confirmed UTIs due to E. coli in the investigational group compared to the IR in placebo group
From 14 days (Day 75) up to 12 months (Day 426) post-Dose 2
Part 2: IR of the first occurrence of a urine culture confirmed UTI due to E. coli in the investigational group compared to the IR in placebo group
From 14 days post-Dose 1 (Day 15) and up to the day before administration of Dose 2 (Day 60) or, for participants receiving only Dose 1, up to the end of the study (Day 426)
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelSEQUENTIAL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Part 1 Group A1/A2EXPERIMENTALParticipants receive candidate UTI vaccine low dose formulation 1 or placebo on Day 1 and Day 61.
Part 1 Group B1/B2EXPERIMENTALParticipants receive candidate UTI vaccine low dose formulation 2, or placebo on Day 1 and Day 61.
Part 1 Group C1/C2EXPERIMENTALParticipants receive candidate UTI vaccine medium dose formulation 1, or placebo on Day 1 and Day 61.
Part 1 Group D1/D2EXPERIMENTALParticipants receive candidate UTI vaccine medium dose formulation 2, or placebo on Day 1 and Day 61.
Part 1 Group E1/E2EXPERIMENTALParticipants receive candidate UTI vaccine high dose formulation 1, or placebo on Day 1 and Day 61.
Part 1 Group F1/F2EXPERIMENTALParticipants receive candidate UTI vaccine high dose formulation 2, or placebo on Day 1 and Day 61.
Part 2 Group 1EXPERIMENTALParticipants receive the candidate UTI vaccine highest tolerated dose (HTD) formulation 2, tested in Part 1 of the study, on Day 1 and Day 61.
Part 2 Group 2PLACEBO_COMPARATORParticipants receive placebo on Day 1 and Day 61.
Interventions
NameTypeDescription
Candidate UTI vaccine low dose formulation 1COMBINATION_PRODUCTCandidate UTI vaccine low dose formulation 1 administered intramuscularly according to a 0, 2 months administration schedule.
Candidate UTI vaccine low dose formulation 2COMBINATION_PRODUCTCandidate UTI vaccine low dose formulation 2 administered intramuscularly according to a 0, 2 months administration schedule.
Candidate UTI vaccine medium dose formulation 1COMBINATION_PRODUCTCandidate UTI vaccine medium dose formulation 1 administered intramuscularly according to a 0, 2 months administration schedule.
Candidate UTI vaccine medium dose formulation 2COMBINATION_PRODUCTCandidate UTI vaccine medium dose formulation 2 administered intramuscularly according to a 0, 2 months administration schedule.
Candidate UTI vaccine high dose formulation 1COMBINATION_PRODUCTCandidate UTI vaccine high dose formulation 1 administered intramuscularly according to a 0, 2 months administration schedule.
Candidate UTI vaccine high dose formulation 2COMBINATION_PRODUCTCandidate UTI vaccine high dose formulation 2 administered intramuscularly according to a 0, 2 months administration schedule.
Candidate UTI vaccine HTD formulation 2COMBINATION_PRODUCTCandidate UTI vaccine HTD formulation 2 administered intramuscularly according to a 0, 2 months administration schedule.
PlaceboCOMBINATION_PRODUCTPlacebo administered intramuscularly according to a 0, 2 months administration schedule.
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Eligibility Criteria
Age Range18 Years — 64 Years
SexALL
Healthy VolunteersYes
Study Sites8

Inclusion Criteria: * Participants, who, in the opinion of the investigator, can and will comply with the requirements of the protocol. * Written informed consent obtained from the participant prior to performance of any study-specific procedure. * Female participants of non-childbearing potential ...

Countries:United StatesSouth Africa
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Competitive Landscape -Urinary Tract Infections 5 trials
Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06702449primaryCompletionDate: changed
LOWMay 24, 2026NCT06702449studyFirstPostDate: changed