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A Clinical Study of MK-2870 Alone or With Other Treatments to Treat Gastrointestinal Cancers (MK-9999-02A)

A Phase 1/2 Study to Evaluate the Safety and Efficacy of MK-2870 Monotherapy or in Combination With Other Anticancer Agents in Gastrointestinal Cancers

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06428409
Enrollment
220
Registered
2024-05-24
Start date
2024-06-20
Completion date
2029-10-16
Last updated
2026-01-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Colorectal Cancer, Pancreatic Ductal Adenocarcinoma, Biliary Tract Cancer

Brief summary

Researchers want to learn if sacituzumab tirumotecan (MK-2870) alone or with other treatments can treat certain gastrointestinal (GI) cancers. The GI cancers being studied are either advanced (the cancer has spread to other parts of the body), or unresectable (the cancer cannot be removed with surgery). The goals of this study are to learn: * About the safety of sacituzumab tirumotecan alone or with other treatments and if people tolerate it * How many people have the cancer respond (get smaller or go away) to treatment

Interventions

BIOLOGICALSacituzumab tirumotecan

Given by IV infusion.

5-FU is administered by IV infusion over 46 to 48 hours every 2 weeks.

DRUGLeucovorin (LV) or levoleucovorin

LV or levoleucovorin is administered by IV infusion every 2 weeks.

DRUGRescue medication

Participants receive the following rescue medications, per approved product label, as premedication to study treatment to prevent hypersensitivity and/or infusion reactions: diphenhydramine (or equivalent histamine-1 \[H1\] receptor antagonist), H2 receptor antagonist, acetaminophen or equivalent, and dexamethasone or equivalent infusion. A steroid mouthwash (dexamethasone or equivalent) will be given as prophylaxis for stomatitis/oral mucositis.

Participants are allowed to take supportive care measures for the management of adverse events associated with study intervention at the discretion of the investigator. Supportive care measures may include but are not limited to antidiarrheal agents and antiemetic agents. Artificial tear drops or gel may be given as supportive care for Ocular Surface Toxicity.

DRUGCisplatin

Given by IV infusion.

BIOLOGICALPembrolizumab

Given by IV infusion.

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

The main inclusion criteria include but are not limited to the following: * Has one of the following cancers: * Unresectable or metastatic colorectal cancer and has received prior therapy for the cancer * Advanced or metastatic pancreatic ductal adenocarcinoma (PDAC) and has received prior therapy for the cancer * Advanced and/or unresectable biliary tract cancer (BTC) and has received prior therapy for the cancer * Advanced and/or unresectable BTC and has not received prior therapy for the cancer * For participants who have received prior therapy for cancer: Has recovered from any side effects due to previous cancer treatment

Exclusion criteria

The main

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Experience a Dose-limiting Toxicity (DLT)Up to approximately 4 weeksA DLT is a medical problem related to the study medicine that prevents giving participants a higher dose or may prevent giving the participant the same dose. The number of participants who experience a DLT will be reported.
Number of Participants Who Experience One or More Adverse Events (AEs)Up to approximately 63 monthsAn AE is a health problem that happens or worsens during the study. The number of participants who have an AE during the study will be reported.
Number of Participants who Discontinue Study Treatment due to an AEUp to approximately 63 monthsAn AE is a health problem that happens or worsens during a study. The number of participants who stop study treatment will be reported.
Objective Response Rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 as Assessed by Blinded Independent Central Review (BICR)Up to approximately 63 monthsORR is defined as the percentage of participants with confirmed Complete Response (CR: disappearance of all target lesions) or Partial Response (PR: at least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1. The percentage of participants who experience CR or PR as assessed by Blinded Independent Central Review (BICR) will be presented.

Secondary

MeasureTime frameDescription
Duration of Response (DOR) per RECIST 1.1 as Assessed by BICRUp to approximately 63 monthsFor participants who demonstrate a confirmed Complete Response or Partial Response, DOR is defined as the time from first documented evidence of CR or PR until progressive disease (PD) or death. Per RECIST 1.1, PD is defined as at least a 20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered PD. DOR as assessed by BICR will be presented.
Progression-free Survival (PFS) per RECIST 1.1 as Assessed by BICRUp to approximately 63 monthsPFS is defined as the time from start of study treatment to the first documented progressive disease (PD) or death due to any cause, whichever occurs first. According to RECIST 1.1, PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD. PFS as assessed by BICR will be presented.
Overall Survival (OS)Up to approximately 63 monthsOS is the length of time from when the participant starts treatment until death from any cause

Countries

Australia, Canada, Chile, China, Italy, Japan, South Korea, Spain, Switzerland, Taiwan, Turkey (Türkiye), United Kingdom, United States

Contacts

CONTACTToll Free Number
Trialsites@msd.com1-888-577-8839
STUDY_DIRECTORMedical Director

Merck Sharp & Dohme LLC

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026