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Recruiting Phase 1, Phase 2 NCT06818643

NCT06818643 A Study to Evaluate the Safety and Efficacy of MK-3120 in Participants With Advanced Solid Tumors (MK-3120-002)

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Clinical Trial Summary
NCT ID NCT06818643
Status Recruiting
Phase Phase 1, Phase 2
Sponsor Merck Sharp & Dohme LLC
Condition Advanced Solid Tumors
Study Type INTERVENTIONAL
Enrollment 270 participants
Start Date 2025-03-25
Primary Completion 2028-10-25

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age N/A
Study Type INTERVENTIONAL
Interventions
MK-3120

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

Phase 1 is the earliest stage of human testing — safety and dosage are the primary focus. Visits are frequent and medical supervision is intensive. You will be among the first people to receive this treatment.

This trial targets 270 participants in total. It began in 2025-03-25 with a primary completion date of 2028-10-25.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

Researchers are looking for new ways to treat people with certain advanced solid tumors. Advanced means the cancer has spread to other parts of the body and cannot be removed with surgery. Solid tumors are cancers mostly in body organs and tissues, not in the blood or other body liquids. The main goal of this study is to learn about the safety of MK-3120 and if people tolerate it.

Eligibility Criteria

Inclusion Criteria: * Has a confirmed advanced (unresectable and/or metastatic) solid tumor and has received or been intolerant to all available treatments * If human immunodeficiency virus (HIV) positive, has well controlled HIV on antiretroviral therapy (ART) * If hepatitis B surface antigen (HBsAg) positive, must have received hepatitis B virus (HBV) antiviral therapy for at least 4 weeks and have undetectable HBV viral load * If hepatitis C virus (HCV) infected, must have undetectable HCV viral load Exclusion Criteria: * Has active inflammatory bowel disease requiring immunosuppressive medication or previous history of inflammatory bowel disease * Has uncontrolled significant cardiovascular disease or cerebrovascular disease * Has history of documented severe dry eye syndrome, severe Meibomian gland disease and/or blepharitis, or severe corneal disease that prevents/delays corneal healing * Has pleural effusion, ascites, and/or pericardial effusion that are symptomatic or require repeated drainage * Is HIV-positive and has a history of Kaposi's sarcoma and/or Multicentric Castleman's Disease * Known additional malignancy that is progressing or has required active treatment within the past 2 years * Known active central nervous system (CNS) metastases and/or carcinomatous meningitis * Active infection requiring systemic therapy, with exceptions * History of (noninfectious) pneumonitis/interstitial lung disease that required steroids or has current pneumonitis/interstitial lung disease * Has HBV or HCV infection

Contact & Investigator

Central Contact

Toll Free Number

✉ Trialsites@msd.com

📞 1-888-577-8839

Principal Investigator

Medical Director

STUDY DIRECTOR

Merck Sharp & Dohme LLC

Frequently Asked Questions

Who can join the NCT06818643 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, studying Advanced Solid Tumors. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT06818643 trial and what does that mean for participants?

Phase 1 trials are the first stage of human testing. The primary goal is to assess safety and determine appropriate dosage levels. Participants are closely monitored. These trials typically involve a small number of volunteers.

Is NCT06818643 currently recruiting?

Yes, NCT06818643 is actively recruiting participants. Contact the research team at Trialsites@msd.com for enrollment information.

Where is the NCT06818643 trial being conducted?

This trial is being conducted at Birmingham, United States, Miami, United States, Hackensack, United States, Austin, United States and 11 additional locations.

Who is sponsoring the NCT06818643 clinical trial?

NCT06818643 is sponsored by Merck Sharp & Dohme LLC. The principal investigator is Medical Director at Merck Sharp & Dohme LLC. The trial plans to enroll 270 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: September 2026  ·  Data Methodology