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CGT9486 plus sunitinib

Phase 3

Advanced Gastrointestinal Stromal Tumors | Small molecule | Oncology |Cogent Biosciences, Inc.|Last Updated: May 22, 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_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment482
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05208047(Peak) A Phase 3 Randomized Trial of CGT9486+Sunitinib vs. Sunitinib in Subjects With Gastrointestinal Stromal TumorsPHASE3 ACTIVE NOT_RECRUITING 482Apr 14, 2022Jan 1, 2030May 22, 2026110 United States, Argentina +20
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Study Endpoints
Primary Endpoints
Part 1a - pharmacokinetics - Cmax
16 days

Maximum plasma concentration (Cmax)

Part 1a - pharmacokinetics - AUC
16 days

Area under the plasma concentration-time curve (AUC)

Part 1b - pharmacokinetics - Cmax
14 days

Maximum plasma concentration (Cmax)

Part 1b - pharmacokinetics - AUC
14 days

Area under the plasma concentration-time curve (AUC)

Part 1b - pharmacokinetics - Tmax
14 days

Time to maximum observed plasma concentration (Tmax)

Part 2 - Progression Free Survival (PFS)
Approximately 48 months

Time from first dose to documented disease progression or death due to any cause, whichever occurs first

DDI Substudy - pharmacokinetics - AUC
16 days

Area under the plasma concentration-time curve (AUC)

DDI Substudy - pharmacokinetics - Cmax
14 days

Maximum plasma concentration (Cmax)

Secondary Endpoints
All Study Parts - observing the safety of each treatment regimen.
Approximately 48 months
Part 1a, Part 1b, Part 2 - Overall Survival (OS)
Approximately 48 months
Part 1a, Part 1b, Part 2 - Objective Response Rate (ORR)
Approximately 48 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part 1aEXPERIMENTALCGT9486 plus sunitinib 37.5 mg QD
Part 2 - Experimental GroupEXPERIMENTALCGT9486 plus sunitinib 37.5 mg QD
Part 2 - Control GroupACTIVE_COMPARATORsunitinib 37.5 mg QD
Part 1b - DDI Cohort 1EXPERIMENTALCGT9486 plus sunitinib 37.5 mg QD
Part 1b - DDI Cohort 2EXPERIMENTALsunitinib 37.5 mg QD plus CGT9486
DDI Substudy (Midazolam)EXPERIMENTALMidazolam, CGT9486, sunitinib
GIST 1L SubstudyEXPERIMENTALCGT9486, sunitinib
Interventions
NameTypeDescription
CGT9486 plus sunitinibDRUGParticipants will receive both CGT9486 and sunitinib orally until study stopping rules are met.
CGT9486DRUGParticipants will receive CGT9486 until steady state then both CGT9486 and sunitinib orally until study stopping rules are met.
SunitinibDRUGParticipants will receive sunitinib until steady state then both sunitinib and CGT9486 orally until study stopping rules are met.
MidazolamDRUGParticipants will receive a single-dose of midazolam on Day 1 and Day 16
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites110

Key Inclusion Criteria: 1. Histologically confirmed locally advanced, metastatic, and/or unresectable GIST. Molecular pathology report must be available for Part 2; if molecular pathology report is unavailable or inadequate, an archival or fresh tumor tissue sample will be required to evaluate muta...

Countries:United StatesArgentinaAustraliaBrazilCanadaChileCzechiaDenmarkFranceGermanyHong KongHungaryItalyMexicoNetherlandsNorwayPolandSouth KoreaSpainSwedenTaiwanUnited Kingdom
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT05208047Enrollment: 442 → 482
LOWMay 24, 2026NCT05208047studyFirstPostDate: changed