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Substudy 06D: Combination Therapies in Second Line (2L) Gastroesophageal Adenocarcinoma (MK-3475-06D/Keymaker-U06)

Sponsored by Merck Sharp & Dohme LLC

Quick Self-Assessment

See if you qualify and express your interest

Preparing your pre-screening questions...

Current Status

Recruiting

Auto-verified from ClinicalTrials.gov

Verified Jan 23, 2026

Phase

Clinical Trial

Sponsor

Merck Sharp & Dohme LLC

Enrollment Target

90

Start Date

Aug 2024

πŸ“Š
1 of 90 participants interested
1% interest

Express Your Interest Today

Interested in learning more? Complete the form below.

Secure & Confidential

Your information is protected and will only be shared with the research team.

Why Participate?

  • No-Cost Study Care

  • Advance Medical Science

    Contribute to groundbreaking research

  • Cutting-Edge Treatment

    Access to innovative therapies

  • Expert Medical Care

    Close monitoring by specialists

  • Possible Compensation*

    For time and travel (varies by study)

  • Help Others

    Benefit future patients

*Compensation varies by study. Confirm details with coordinator.

Simple Process

  1. 1Submit this form
  2. 2Phone screening
  3. 3In-person assessment if eligible
  4. 4Begin participation

About This Study

This is a phase 1/2 multicenter, open-label umbrella platform study that will evaluate the safety and efficacy of sacituzumab tirumotecan (MK-2870) plus paclitaxel versus ramucirumab plus paclitaxel, for the treatment of participants with advanced or metastatic gastric adenocarcinoma, gastroesophageal junction (GEJ) adenocarcinoma, or esophageal adenocarcinoma who have failed 1 prior line of therapy. This is an estimation study, and no formal hypothesis testing will be performed.

Who Can Participate

Inclusion Criteria

The main inclusion criteria include but are not limited to the following:
Has histologically and/or cytologically confirmed diagnosis of previously treated, 2L (received first line (1L) treatment) gastric adenocarcinoma, GEJ adenocarcinoma, or esophageal adenocarcinoma
Has metastatic disease or locally advanced, unresectable disease
Has experienced documented objective radiographic or clinical disease progression during or after 1L therapy containing any platinum/fluoropyrimidine doublet with or without immunotherapy
Participants with gastroesophageal adenocarcinoma that is known to be human epidermal growth factor receptor 2 (HER2)/neu positive are excluded. Participants with unknown HER2 status are eligible.
Has provided an archival tumor tissue sample or most recently obtained core, incisional, or excisional biopsy of a tumor lesion
AEs due to previous anticancer therapies must be ≀Grade 1 or baseline (except alopecia and vitiligo). Endocrine-relate

❓ Not sure if you qualify? Submit your interest and a study coordinator will help determine your eligibility during the screening process.

Study Details

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Study Type

INTERVENTIONAL

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Target Enrollment

90 participants

⚧

Gender

ALL

🏒

Sponsor

Merck Sharp & Dohme LLC

Study Locations

Choose your preferred location or select flexible during enrollment

RECRUITING

Tucson

Arizona

Location available
View Tucson location page
RECRUITING

Los Angeles

California

Location available
View Los Angeles location page
COMPLETED

Louisville

Kentucky

Location available
View Louisville location page
RECRUITING

Grand Rapids

Michigan

Location available
View Grand Rapids location page
RECRUITING

East Syracuse

New York

Location available
View East Syracuse location page
COMPLETED

New York

New York

Location available
View New York location page
RECRUITING

Pittsburgh

Pennsylvania

Location available
View Pittsburgh location page
RECRUITING

Houston

Texas

Location available
View Houston location page

Frequently Asked Questions

Q: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.

Q: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.

Q: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.

Q: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.

Q: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.

Q: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.

Still have questions? Our study coordinators are here to help.

Ready to Make a Difference?

Express your interest in this groundbreaking clinical trial

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Find More Esophageal Cancer Trials by City

Browse all esophageal cancer clinical trials in these cities β€” not just this study.

Looking for Gastroesophageal Cancer Treatment in Tucson?

Join others in Arizona exploring innovative treatment options through clinical research

Gastroesophageal Cancer Treatment Options in Tucson, Arizona

If you're searching for Gastroesophageal Cancer treatment in Tucson, participating in a clinical research study may provide access to innovative approaches under expert medical supervision. This study is actively recruiting participants in Tucson, Los Angeles, Louisville and surrounding areas.

Clinical trials offer participants the opportunity to receive cutting-edge treatments while contributing to medical research that may help future patients with Gastroesophageal Cancer. All study-related care is provided at no cost to participants.

Local Sites
3 locations in Arizona
Now Enrolling
Up to 90 participants
Quick Start
Screening available now

Why Consider a Clinical Trial for Gastroesophageal Cancer?

Potential Benefits

  • βœ“Access to new treatment approaches before public availability
  • βœ“Close monitoring by experienced medical professionals
  • βœ“Study-related care provided at no cost
  • βœ“Contribute to medical research for Gastroesophageal Cancer

What to Expect

  • β†’Initial screening to determine eligibility
  • β†’Regular check-ups and monitoring visits
  • β†’Possible compensation for time and travel
  • β†’You can withdraw at any time

Frequently Asked Questions About This Gastroesophageal Cancer Study

Important Clinical Trial Information

This information is provided for educational purposes and does not constitute medical advice. Clinical trial participation involves potential risks and benefits. Eligibility requirements apply and will be assessed during the screening process.

Study identifier: NCT06445972. For complete study details, visit ClinicalTrials.gov. Always consult with your healthcare provider before making decisions about your medical care or participating in clinical research.