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GS-5319

Phase 1

Advanced Solid Tumor | Small molecule | Oncology |Gilead Sciences, Inc.|Last Updated: May 26, 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
CONTROLLEDBiomarker
Total Trials1
Total Enrollment178
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07128303Study of GS-5319 in Adults With Solid TumorsPHASE1 RECRUITING 178Aug 28, 2025May 1, 2028May 26, 20269 United States, South Korea +1
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Study Endpoints
Primary Endpoints
Percentage of Participants With Adverse Events (AEs) and Serous Adverse Events (SAEs)
First Dose up to 30 days post last dose (Up to 105 weeks)
Percentage of Participants Experiencing Laboratory Abnormalities
First Dose up to 30 days post last dose (Up to 105 weeks)
Percentage of Participants Experiencing any Dose-limiting Toxicities (DLTs) in Dose-escalation Cohorts
Up to 21 days
Secondary Endpoints
Plasma Concentration of GS-5319
Predose and postdose up to end of treatment (up to 105 weeks)
Pharmacokinetic (PK) parameter: AUC0-24 of GS-5319
Predose and postdose up to end of treatment (up to 105 weeks)
PK parameter: Cmax of GS-5319
Predose and postdose up to end of treatment (up to 105 weeks)
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part A: GS-5319 Monotherapy Dose EscalationEXPERIMENTALParticipants will receive escalating doses of GS-5319 monotherapy, until disease progression, or until the participants meets other study drug discontinuation criteria as specified in protocol or up to 105 weeks, whichever occurs first to determine the recommended dose for dose expansion phase.
Part B: GS-5319 Monotherapy Dose ExpansionEXPERIMENTALParticipants will be enrolled in different cohorts based on the selected indications to receive GS-5319 monotherapy at the recommended dose during the monotherapy dose expansion phase.
Interventions
NameTypeDescription
GS-5319DRUGAdministered orally
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites9

Key Inclusion Criteria: * Participants diagnosed with histologically or cytologically confirmed solid tumor types who have progressed despite standard therapy, are intolerant to standard therapy, or are ineligible for standard therapy in the advanced setting (locally-advanced or metastatic). * Part...

Countries:United StatesSouth KoreaSpain
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Recent Changes (Last 90 Days)
LOWMay 27, 2026NCT07128303lastUpdatePostDate: changed
LOWMay 27, 2026NCT07128303lastUpdatePostDate: changed
LOWMay 26, 2026NCT07128303primaryCompletionDate: changed
LOWMay 24, 2026NCT07128303studyFirstPostDate: changed