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Darlifarnib

Phase 1

Solid Tumors With HRAS Alterations | Small molecule | Oncology |Kura Oncology, Inc.|Last Updated: Jun 8, 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 Enrollment300
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06026410KO-2806 Monotherapy and Combination Therapies in Advanced Solid TumorsPHASE1 RECRUITING 300Oct 18, 2023Apr 1, 2027Jun 8, 202638 United States, France +3
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Study Endpoints
Primary Endpoints
Rate of dose-limiting toxicities (DLTs)
DLTs will be evaluated during the first 28 days of KO-2806 treatment (dose escalation)
Descriptive statistics of adverse events (AEs)
First dose of KO-2806 up to and including 28 days after last dose of KO-2806 (dose escalation)

NCI-CTCAE v5.0

Incidence of dose interruptions, reductions, and discontinuations due to AE
First dose of KO-2806 up to last dose of KO-2806 or up to 24 months of treatment (dose escalation)
Objective Response Rate (ORR)
Up to an estimated period of 24 months (dose expansion)

Assessed per RECIST v1.1

Secondary Endpoints
Incidence of dose interruptions, reductions, and discontinuations due to AE
First dose of KO-2806 up to last dose of KO-2806 or up to 24 months of treatment (dose expansion)
Descriptive statistics of AEs
First dose of KO-2806 up to and including 28 days after last dose of KO-2806 (dose expansion)
Objective Response Rate (ORR)
Up to an estimated period of 24 months (dose escalation)
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Arm #1: RAS-altered advanced solid tumors, monotherapy (escalation phase)EXPERIMENTALPatients with advanced solid tumors and the following: * HRAS-mutant and/or amplified tumors (any solid tumor type) * HRAS overexpression (only for HNSCC tumors) * KRAS and/or NRAS and/or HRAS-mutant and/or amplified for NSCLC or CRC * KRAS-mutant and/or amplified PDAC
Arm #2: Advanced or metastatic RCC, combination therapy (escalation phase)EXPERIMENTALPatients who have received at least 1 prior systemic therapy with immuno-oncology (IO)-based treatment for locally advanced or metastatic RCC with predominantly clear cell subtype; non-clear cell RCC patients who are either treatment naïve or have received any prior systemic treatment for locally advanced and metastatic RCC
Arm #3: Advanced or metastatic NSCLC, CRC, or PDAC, combination therapy (escalation phase)EXPERIMENTALPatients with KRAS G12C-mutant locally advanced or metastatic NSCLC, CRC, or PDAC who have received at least 1 prior systemic therapy including available approved standard of care treatments
Arm #4: Advanced or metastatic ccRCC, combination therapy (expansion phase)EXPERIMENTALPatients must be cabozantinib-naïve and have received at least 1 prior systemic therapy with IO-based treatment for locally advanced or metastatic ccRCC
Arm #5: Advanced or metastatic ccRCC, monotherapy (expansion phase)EXPERIMENTALPatients must be cabozantinib-naïve and have received at least 1 prior systemic therapy with IO-based treatment for locally advanced or metastatic ccRCC
Arm #6: Advanced or metastatic ccRCC, cabozantinib rollover to combination therapy (expansion phase)EXPERIMENTALPatients must be cabozantinib-naïve and have received at least 1 prior systemic therapy with IO-based treatment for locally advanced or metastatic ccRCC
Arm #7: Advanced or metastatic NSCLC, combination therapy (expansion phase)EXPERIMENTALPatients with KRAS G12C-mutant locally advanced or metastatic NSCLC who have received at least 1 prior systemic therapy including available approved standard of care treatments
Interventions
NameTypeDescription
DarlifarnibDRUGOral administration
CabozantinibDRUGOral administration
AdagrasibDRUGOral administration
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites38

Inclusion Criteria: * At least 18 years of age. * Histologically or cytologically confirmed advanced solid tumors * Arm #1 (KO-2806 monotherapy): Patients who have progressed on, or are refractory to, standard of care (SOC) treatments with advanced solid tumors, specifically: HRAS-mutant and/or ...

Countries:United StatesFranceGermanyItalySpain
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Recent Changes (Last 90 Days)
LOWJun 8, 2026NCT06026410lastUpdatePostDate: changed
LOWJun 8, 2026NCT06026410lastUpdatePostDate: changed
LOWJun 8, 2026NCT06026410lastUpdatePostDate: changed
LOWMay 26, 2026NCT06026410primaryCompletionDate: changed
LOWMay 24, 2026NCT06026410studyFirstPostDate: changed