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Avutometinib + Defactinib

Phase 3

Low Grade Serous Ovarian Cancer | Small molecule | Oncology |Verastem, Inc.|Last Updated: Apr 2, 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 Trials2
Total Enrollment286
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06072781A Study of Avutometinib (VS-6766) + Defactinib (VS-6063) in Recurrent Low-Grade Serous Ovarian CancerPHASE3 RECRUITING 270Mar 18, 2024Feb 9, 2031Apr 2, 2026106 United States, Australia +14
NCT06682572A Study of Avutometinib + Defactinib in Recurrent Low-Grade Serous Ovarian Cancer in Japanese PatientsPHASE2 ACTIVE NOT_RECRUITING 16Oct 30, 2024Oct 1, 2027Dec 17, 20255 Japan
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Study Endpoints
Primary Endpoints
Progression Free Survival (PFS) per blinded independent central review (BICR)
Up to 24 months

Progression-free survival (PFS) according to RECIST version 1.1, per blinded independent central review (BICR)

Confirmed overall response rate (ORR; partial response [PR] + complete response [CR]
From start of treatment to confirmation of response; 24 weeks

Confirmed overall response rate (ORR; partial response \[PR\] + complete response \[CR\] defined according to Response Evaluation Criteria in Solid Tumors version 1.1 \[RECIST v1.1\]) as assessed by the blinded independent central radiology review committee (BICR)

Secondary Endpoints
Overall Survival (OS)
Up to 5 years
Progression Free Survival (PFS) per investigator assessment
24 months
Objective response rate (ORR)
12 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelCROSSOVER
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
avutometinib + defactinibEXPERIMENTALAvutometinib 3.2 mg, PO, twice weekly for 21 days on, 7 days off in a 28-day (4 weeks) cycle in combination with defactinib 200 mg, PO, twice daily for 21 days on, 7 days off in a 28-day(4 week) cycle.
Investigator Choice of Treatment (ICT)ACTIVE_COMPARATORPatients will receive one of the following therapies as determined by the Investigator: * Pegylated liposomal doxorubicin: 40 mg/m2 IV on Day 1 of each 28-day (4 week) cycle. * Paclitaxel: 80 mg/m2 IV on Days 1, 8, and 15 of each 28-day (4 week) cycle. * Anastrozole: 1 mg, PO, once daily of each 28-day (4 week) cycle. * Letrozole: 2.5 mg, PO, once daily of each 28-day (4 week) cycle.
Interventions
NameTypeDescription
avutometinibDRUGAvutometinib: administered orally
DefactinibDRUGDefactinib: administered orally
Pegylated liposomal doxorubicinDRUGadministered intravenously
PaclitaxelDRUGadministered intravenously
LetrozoleDRUGadministered orally
AnastrozoleDRUGadministered orally
Avutometinib (VS-6766) + Defactinib (VS-6063)DRUGcombination therapy
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Eligibility Criteria
Age Range18 Years — N/A
SexFEMALE
Healthy VolunteersNo
Study Sites106

Inclusion Criteria: Patients may be eligible for inclusion in the study if they meet the following criteria: 1. Histologically proven LGSOC (ovarian, fallopian, peritoneal) 2. Documented mutational status of KRAS by a validated tumor-tissue based diagnostic test. 3. Suitable for treatment with at ...

Countries:United StatesAustraliaBelgiumCanadaDenmarkFranceGermanyIrelandItalyJapanNetherlandsNew ZealandPolandSouth KoreaSpainUnited Kingdom
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06072781primaryCompletionDate: changed
LOWMay 26, 2026NCT06682572primaryCompletionDate: changed
LOWMay 24, 2026NCT06072781studyFirstPostDate: changed
LOWMay 24, 2026NCT06682572studyFirstPostDate: changed