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GSK4528287

Phase 1

Colitis, Ulcerative | Small molecule | Other |GSK plc|Last Updated: Apr 6, 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_CONTROLLEDBiomarker
Total Trials1
Total Enrollment48
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06681181A First-time in Human (FTIH) Study to Evaluate Safety, Tolerability, Pharmacokinetics and Target Engagement of GSK4528287 in Healthy ParticipantsPHASE1 ACTIVE NOT_RECRUITING 48Nov 18, 2024Feb 25, 2027Apr 6, 20261 United Kingdom
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Study Endpoints
Primary Endpoints
Number of Participants with Adverse Events (AE)
Up to Day 351 (End of follow up period)

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.

Number of Participants with Serious Adverse Events (SAE)
Up to Day 351 (End of follow up period)

An SAE is defined as any untoward medical occurrence that, at any dose, meets one or more of the criteria: Results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant.

Number of Participants with Clinically Significant Changes in Laboratory Values
Up to Day 351 (End of follow up period)

Number of participants with clinically significant changes in laboratory values (hematology, chemistry, urinalysis, and virology) will be assessed.

Number of Participants with Clinically Significant Changes in Vital Signs
Up to Day 351 (End of follow up period)

Number of participants with clinically significant changes in vital signs will be assessed.

Number of Participants with Clinically Significant Changes in Telemetry
On Day 1

Number of participants with clinically significant changes in telemetry will be assessed.

Number of Participants with Clinically Significant Changes in 12 lead Electrocardiogram (ECG)
Up to Day 351 (End of follow up period)

Number of participants with clinically significant changes in 12 lead ECG will be assessed.

Secondary Endpoints
Area under concentration-time curve (AUC) of GSK4528287
Up to Day 337
Maximum concentration (Cmax) of GSK4528287
Up to Day 337
Time to maximum concentration (Tmax) of GSK4528287
Up to Day 337
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Cohort 1: Dose 1EXPERIMENTALParticipants will be administered Dose 1 of GSK4528287.
Cohort 2: Dose 2EXPERIMENTALParticipants will be administered Dose 2 of GSK4528287.
Cohort 3: Dose 3EXPERIMENTALParticipants will be administered Dose 3 of GSK4528287.
Cohort 4: Dose 4EXPERIMENTALParticipants will be administered Dose 4 of GSK4528287.
Cohort 5: Dose 5EXPERIMENTALParticipants will be administered Dose 5 of GSK4528287.
Cohort 6: Dose 6EXPERIMENTALParticipants will be administered Dose 6 of GSK4528287.
PlaceboPLACEBO_COMPARATORParticipants will receive Placebo.
Interventions
NameTypeDescription
GSK4528287DRUGGSK4528287 will be administered.
PlaceboDRUGPlacebo will be administered.
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Eligibility Criteria
Age Range18 Years — 55 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, laboratory tests, and cardiac monitoring * White blood cell greater than or equal to (\>=) lower limit of normal (LLN), including both lymphocyte counts \>...

Countries:United Kingdom
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT06681181Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWMay 24, 2026NCT06681181studyFirstPostDate: changed