NCT06997497 · Merck Sharp & Dohme LLC
A Clinical Study of Calderasib (MK-1084) With Targeted Therapy and Chemotherapy in People With Colorectal Cancer (MK-1084-012/KANDLELIT-012)
What this study is about
Researchers are looking for other ways to treat locally advanced or metastatic colorectal cancer (mCRC) that is unresectable and has a gene mutation called KRAS G12C. Standard (or usual) treatments for this type of colorectal cancer may include mFOLFOX6 with or without bevacizumab.
View original scientific description
Researchers are looking for other ways to treat locally advanced or metastatic colorectal cancer (mCRC) that is unresectable and has a gene mutation called KRAS G12C. Standard (or usual) treatments for this type of colorectal cancer may include mFOLFOX6 with or without bevacizumab. Researchers want to learn if adding calderasib (the study medicine) and cetuximab to mFOLFOX6 can treat locally advanced or mCRC with the KRAS G12C mutation. Calderasib and cetuximab are targeted therapies. The goals of this study are to learn: * About the safety of calderasib with cetuximab and mFOLFOX6 and if people tolerate the treatments * If people who receive calderasib with cetuximab and mFOLFOX6 live longer without mCRC growing or spreading compared to people who receive mFOLFOX6 with or without bevacizumab.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- The main inclusion criteria include but are not limited to the following:
- Has a histologically confirmed diagnosis of locally advanced unresectable or metastatic (unresectable Stage III or Stage IV as defined by American Joint Committee on Cancer \[AJCC\] eighth edition) colorectal adenocarcinoma
- Part 2 only: Has not received systemic anticancer therapy for locally advanced unresectable or metastatic colorectal cancer; an exception is permitted for 1-2 cycles of FOLFOX or 1 cycle of CAPOX as optional chemotherapy before or during the screening period
- Demonstrates presence of a Kirsten rat sarcoma viral oncogene homolog G12C (KRAS G12C) mutation
- Human immunodeficiency virus (HIV)-infected participants must have well controlled HIV on antiretroviral therapy (ART)
- Participants who are Hepatitis B surface antigen (HBsAg) positive are eligible if they have received hepatitis B virus (HBV) antiviral therapy and have undetectable HBV viral load
- Participants with history of hepatitis C virus (HCV) infection are eligible if HCV viral load is undetectable
Exclusion criteria
- The main exclusion criteria include but are not limited to the following:
- Has active inflammatory bowel disease requiring immunosuppressive medication or previous clear history of inflammatory bowel disease (eg, Crohn's disease, ulcerative colitis, chronic diarrhea)
- Has uncontrolled, significant cardiovascular disease or cerebrovascular disease
- Has known partial or complete dihydropyrimidine dehydrogenase (DPD) deficiency
- HIV-infected participants with a history of Kaposi's sarcoma and/or Multicentric Castleman's Disease
- Has received prior systemic anticancer therapy including investigational agents within 4 weeks before randomization, with the exception of the optional chemotherapy
- Has 1 or more conditions that, in the opinion of the investigator, make the participant ineligible for treatment with bevacizumab
- Has known additional malignancy that is progressing or has required active treatment within the past 3 years
- Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis or leptomeningeal disease
- Has active infection requiring systemic therapy
- Has not adequately recovered from major surgery or have ongoing surgical complications
- Has a history of (noninfectious) pneumonitis/interstitial lung disease that required steroids or has current pneumonitis/interstitial lung disease
Where
- Los Angeles, California
- Fort Collins, Colorado
- Lone Tree, Colorado
- Fort Myers, Florida
- Orlando, Florida
- St. Petersburg, Florida
- West Palm Beach, Florida
- Boise, Idaho
- Lisle, Illinois
- Iowa City, Iowa
- Lexington, Kentucky
- Louisville, Kentucky
And 18 more locations — see the full list below.
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 10, 2026 · Source of record for eligibility and locations