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AMG 436 as Monotherapy and Combination Therapy in Participants With MSI-H/dMMR Solid Tumors

A Phase 1/1b Study Evaluating the Safety, Tolerability, and Pharmacokinetics of AMG 436 as Monotherapy and in Combination With Other Therapies in Participants With Microsatellite Instability-high (MSI-H)/Mismatch Repair Deficient (dMMR) Solid Tumors

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07403721
Enrollment
464
Registered
2026-02-11
Start date
2026-04-08
Completion date
2028-07-28
Last updated
2026-08-27

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

Conditions

Metastatic or Locally Advanced Solid Tumors With Microsatellite Instability-high (MSI-H) or Mismatched Repair Deficiency (dMMR)

Keywords

AMG 436, MSI-H, dMMR, Solid Tumors

Brief summary

The primary objectives of this trial are to evaluate the safety profile of AMG 436 and to determine the maximum tolerated dose (MTD) and/or the recommended dose for AMG 436 as monotherapy and in combination with other anti-cancer therapies in participants with MSI-H/dMMR solid tumors.

Interventions

DRUGAMG 436

AMG 436 will be administered.

Sponsors

Amgen
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

* Age ≥ 18 years (or ≥ legal age within the country if it is older than 18 years). * Histologically confirmed MSI-H or dMMR metastatic or locally advanced solid tumor by local testing or central testing. * Tumor tissue (formalin-fixed, paraffin-embedded sample) archival block must be available. Participants without archived tumor tissue may enroll by undergoing tumor biopsy before dosing. * Disease measurable as defined by Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1). * Eastern Cooperative Oncology Group performance (ECOG) 0-1. * Adequate organ function as defined in the protocol.

Exclusion criteria

* Participants with primary central nervous system (CNS) tumors. * Impaired cardiac function or clinically significant cardiac disease. * Major surgery within 28 days of trial day 1. * Antitumor therapy (chemotherapy, antibody therapy, molecular targeted therapy, hormonal therapy, or investigational agent) within 21 days of first dose of trial treatment, unless anti-tumor therapy is a therapy with 5 times the half-life being shorter than 21 days (in this case, enrollment may be allowed with washout from prior therapy of \< 21 days. * Radiation therapy within 28 days of the first dose of trial treatment (or local or focal radiotherapy with palliative intent within 14 days of the first dose). * Gastrointestinal tract disease causing the inability to take per os (PO) medication, malabsorption syndrome, requirement for intravenous (IV) alimentation, uncontrolled inflammatory gastrointestinal disease (eg, Crohn's disease, ulcerative colitis).

Design outcomes

Primary

MeasureTime frame
Number of Participants with a Dose Limiting Toxicity (DLT)Up to 21 days
Number of Participants with Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Up to 5 years

Secondary

MeasureTime frame
Maximum Serum Concentration (Cmax) of AMG 436Up to 57 days
Minimum Serum Concentration (Cmin) of AMG 436Up to 57 days
Area Under the Concentration-time Curve (AUC) Over the Dosing Interval of AMG 436Up to 57 days
Time to Achieve Cmax (Tmax) of AMG 436Up to 57 days
Part 1B: Cmax of AMG 436 in the Fed and/or Fasted StateUp to 24 days
Part 1B: Tmax of AMG 436 in the Fed and/or Fasted StateUp to 24 days
Part 1B: AUC Over the Dosing Interval of AMG 436 in the Fed and/or Fasted StateUp to 24 days
Confirmed Objective Response (OR) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1Up to 5 years
Duration of Response (DOR) per RECIST v1.1Up to 5 years
Time to Response (TTR) per RECIST v1.1Up to 5 years
Disease Control Rate (DCR) per RECIST v1.1Up to 5 years
Progression-free Survival (PFS) per RECIST v1.1Up to 5 years
Overall Survival (OS) per RECIST v1.1Up to 5 years
Change From Baseline in Tumor Phosphorylated Checkpoint Kinase 2 (CHK2) Following AMG 436Baseline up to 5 years

Countries

Australia, Belgium, Canada, China, France, Japan, South Korea, Spain, Taiwan, United States

Contacts

CONTACTAmgen Call Center
medinfo@amgen.com866-572-6436
STUDY_DIRECTORMD

Amgen

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 28, 2026