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GSK4524101

Phase 1

Neoplasms | Small molecule | Oncology |GSK plc|Last Updated: Apr 24, 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
RandomizedACTIVE_CONTROLLEDBiomarker
Total Trials1
Total Enrollment42
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06077877A Study to Investigate the Safety, Tolerability, Pharmacokinetics (PK), and Preliminary Anticancer Activity of GSK4524101 Alone or With Niraparib in Participants With Solid TumorsPHASE1 ACTIVE NOT_RECRUITING 42Oct 24, 2023Jun 30, 2026Apr 24, 202611 United States, Canada +1
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Study Endpoints
Primary Endpoints
Part 1 - Proportion of Participants with Dose Limiting Toxicities (DLTs) during DLT Observation Period
Up to 28 days
Part 1 - Proportion of Participants with Treatment Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs) based on Severity during DLT Observation Period
Up to 28 days
Part 1 - Duration of Treatment Emergent AEs and SAEs (Days) during DLT Observation Period
Up to 28 days
Part 1 - Percentage of Participants who receive all Planned Doses during DLT Observation Period
Up to 28 days
Part 1 -Percentage of Participants who require dosage interruptions, dose reductions, and drug discontinuations due to adverse reactions during DLT Observation Period
Up to 28 days
Part 2 - Confirmed Objective Response Rate (ORR)
Up to approximately 52 weeks

ORR is the percentage of participants with an Investigator-assessed confirmed complete response and confirmed partial response to treatment, as assessed by Response Evaluation Criteria in Solid Tumor (RECIST) v1.1

Secondary Endpoints
Part 1 - Area Under Curve (AUC) of GSK4364973 (Metabolite of GSK4524101)
Up to 21 weeks
Part 1 -Maximum Concentration (Cmax) of GSK4364973 (Metabolite of GSK4524101)
Up to 21 weeks
Part 1 - Time to Maximum Concentration of GSK4364973 (Metabolite of GSK4524101)
Up to 21 weeks
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part 1 - GSK4524101 MonotherapyEXPERIMENTAL -
Part 1 - GSK4524101 plus NiraparibEXPERIMENTAL -
Part 1 - GSK4524101 Food Effect CohortEXPERIMENTAL -
Part 2 - GSK4524101 plus NiraparibEXPERIMENTAL -
Part 2 - NiraparibACTIVE_COMPARATOR -
Interventions
NameTypeDescription
GSK4524101DRUGGSK452101 will be administered.
NiraparibDRUGNiraparib will be administered.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites11

Inclusion Criteria: * More than or equal to (≥)18 years of age * Eastern cooperative oncology group (ECOG) class 0-2 * Life expectancy of a minimum of 3 month * Participant has histologically diagnosed advanced or metastatic solid tumor and has exhausted all standard of care treatment options (Part...

Countries:United StatesCanadaPanama
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06077877primaryCompletionDate: changed
LOWMay 24, 2026NCT06077877studyFirstPostDate: changed