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VS-6766/avutometinib

Phase 1

Colorectal Cancer | Small molecule | Oncology |Verastem, Inc.|Last Updated: Nov 5, 2025

Target and mechanism

ModalitySmall molecule

Also known as VS-6766

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDBiomarker
Total Trials1
Total Enrollment53

FDA Designations

No designations recorded

Clinical trial landscape

VS-6766/avutometinib · 1 trial · 5 indications

Phase 1 1
NCT05200442A Study of VS-6766 and Cetuximab in Patients With Advanced Colorectal CancerColorectal Cancer
RECRUITING53 Analytics
PHASE1RECRUITING
A Study of VS-6766 and Cetuximab in Patients With Advanced Colorectal Cancer
Colorectal CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase I Primary Objective: Maximum Tolerated Dose (MTD) of VS-6766 combined with Cetuximab
2 years

The maximum tolerated dose of VS-6766 in combination with cetuximab in participants who have KRAS-mutated metastatic colorectal cancer after disease progression or evidence of intolerance to fluorouracil (5- FU) /capecitabine, oxaliplatin, irinotecan and bevacizumab (if indicated). Doctors leading the study will find the maximum tolerated dose by assessing the rate of serious side effects (known as "dose limiting toxicities") among participants according to the NCI Common Terminology Criteria (CTCAE) for Adverse Events Version 5.

Phase 2 Primary Objective: Objective Response Rate of Participants Who Take Phase I /MTD Dose of VS-6766 combined with Cetuximab
2 years

Objective response rate or participants who take the maximum tolerated dose (MTD) of VS-6766 combined with cetuximab that was established in phase 1 (the dose-finding portion) of the study. The objective response rate (how the participant's cancer responds to the study drugs) will be measured and assessed using the Response Evaluation Criteria in Solid Tumors (RECIST) v1.1.

Secondary Endpoints

Phase 1 Objective: The Number of Dose-Limiting Toxicities (Serious Side Effects) Reported Among Participants Taking VS-6766 and Cetuximab
2 years
Phase 1 Objective: Frequency/ Type of Dose-Limiting Toxicities (Serious Side Effects) Reported Among Participants Taking VS-6766 and Cetuximab
2 years
Phase 2 Objective: Duration of Response
2 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1(Dose-Finding Arm): Group 1 - Dose Level 1 (Starting Dose)EXPERIMENTALThis study will use two dose levels (a starting dose at level 1 and a second dose highest dose at level 2) of the VS-6766 and cetuximab regimen. If participants in group 1 don't experience severe negative side effects to the starting dose of the regimen, then more participants will be assigned to group 2 at a higher dose until the safest/ most tolerable dose is found. If participants show toxic side effects to the first pre-determined dose, the dose will be decreased to the next lower dose level. Group 1/ Dose Level 1: Participants in group 0 will receive the starting dose of study drugs (below): * VS-6766 (2.4mg) orally twice a week * cetuximab (500mg) via intravenous (IV) needle in vein every 2 weeks During phase 1, VS-6766 and cetuximab will be given in 28-day "cycles" (a period of time when participants receive study drugs). Participants in this portion of the study will receive 12 cycles of VS-6766 and cetuximab.
Phase 1(Dose-Finding Arm): Group 2- Dose Level 2 (Second Highest Dose)EXPERIMENTALThis study will use two dose levels (a starting dose at level 1 and a second dose highest dose at level 2) of the VS-6766 and cetuximab regimen. If participants in group 1 don't experience severe negative side effects to the starting dose of the regimen, then more participants will be assigned to group 2 at a higher dose until the safest/ most tolerable dose is found. If participants show toxic side effects to the first pre-determined dose, the dose will be decreased to the next lower dose level. Participants in group 2 will receive the second highest dose of study drugs (below): * VS-6766 (3.4mg) orally twice a week * cetuximab (500mg) via intravenous (IV) needle in vein every 2 weeks During phase 1, VS-6766 and cetuximab will be given in 28-day "cycles" (a period of time when participants receive study drugs). Participants in this portion of the study will receive 12 cycles of VS-6766 and cetuximab.
Phase 1(Dose-Finding Arm): Group 3 - Lower Dose Level 1EXPERIMENTALParticipants in this group will received a lower dose of the VS6766 and cetuximab regimen. Inclusion in this group is optional and based on whether the participant reports serious side effects in response to a higher dose of the regimen. If participants are included in this group, they will receive: * VS-6766 (2.4mg) orally twice a week * cetuximab (400mg) via intravenous (IV) needle in vein every 2 weeks
Phase 1(Dose-Finding Arm): Group 4 - Lower Dose Level 2EXPERIMENTALParticipants in this group will received the second lowest dose of the VS6766 and cetuximab regimen. Inclusion in this group is optional and based on whether the participant reports serious side effects in response to a higher dose of the regimen. If participants are included in this group, they will receive: * VS-6766 (2.4mg) orally twice a week * cetuximab (300mg) via intravenous (IV) needle in vein every 2 weeks
Phase 2 (Efficacy Arm/ Expansion Cohort)EXPERIMENTALParticipants in this arm will help test the efficacy of the VS-6766 and cetuximab dose established in phase 1 of the study. Participants will take the same two drugs ( VS-6766 and cetuximab) at the best tolerated dose that was found during the first phase of the study. Participants in this group will also keep a pill diary. This helps you keep track of when you take your pills. The study team at your doctor's office will show you how to use this diary. Each time you visit the clinic, you must bring the pill diary, any remaining pills, and the pill bottle.

Interventions

NameTypeDescription
VS-6766/avutometinibDRUGAn oral anti-cancer medication.
CetuximabDRUGA chemotherapy drug used to treat head, neck and colorectal cancer.
Pill DiaryOTHERA diary where participants in phase 2 of study will log their medications and times they are taken on study.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Must be able to show documentation of disease: Participants must have metastatic colorectal adenocarcinoma with kirsten rat sarcoma viral oncogene homolog (KRAS) mutations, detected by any Clinical Laboratory Improvement Amendments-certified method (tumor or ct-DNA), for which...

Countries:United States
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Frequently asked questions about VS-6766/avutometinib

What is VS-6766 used for?

VS-6766 is an investigational small molecule being studied in oncology. Clinical trials are evaluating it in non-small cell lung cancer (NSCLC), breast cancer, colorectal cancer, low grade serous ovarian cancer, endometrioid carcinoma, and pancreatic cancer. It is also being studied in healthy subjects to assess food effects. It is not yet approved by the FDA.

Who makes VS-6766?

VS-6766 is being developed by Verastem, Inc., a biopharmaceutical company traded on NASDAQ under the ticker VSTM. The company is conducting clinical trials of VS-6766 across multiple cancer types, including NSCLC, breast cancer, and colorectal cancer.

What phase is VS-6766 in?

VS-6766 is in Phase 1 clinical development. Multiple Phase 1 trials are ongoing or completed, including studies in NSCLC, breast cancer, colorectal cancer, and a food effect study in healthy volunteers. VS-6766 is investigational and has not received FDA approval.

What clinical trials is VS-6766 in?

VS-6766 is being studied in several Phase 1 trials. NCT03875820 evaluates defactinib and VS-6766 in NSCLC, low grade serous ovarian cancer, endometrioid carcinoma, and pancreatic cancer. NCT05187169 is a completed food effect study in healthy adults. NCT05200442 studies VS-6766 with cetuximab in colorectal cancer. NCT05608252 studies VS-6766 with abemaciclib and fulvestrant in breast cancer.

Is VS-6766 the same as avutometinib?

Yes, VS-6766 is also known as VS-6766/avutometinib. This alternative name may appear in scientific literature and clinical trial listings. Both names refer to the same investigational small molecule being developed by Verastem, Inc.

Is VS-6766 FDA approved?

No, VS-6766 is not FDA approved. It is an investigational drug currently in Phase 1 clinical trials. Studies are evaluating its safety and efficacy in various cancers, but it has not completed the clinical development process required for regulatory approval.