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Study details
Enrolling now

ACTengine® IMA203 Combined With mRNA-4203

Immatics US, Inc.
NCT IDNCT06946225ClinicalTrials.gov data as of Apr 2026
Phase

Phase 1

Target enrollment

15

Study length

about 4.1 years

Ages

18+

Locations

4 sites in CA, MA, NY +1

What this study is about

This trial is testing the safety, tolerability, and anti-tumor activity of IMA203 when combined with different doses of mRNA-4203. It includes adults who have previously been treated for unresectable or metastatic cutaneous melanoma (CM) or synovial sarcoma (SS).

Simplified from trial records by PatientMatch.

What you may be asked to do

  • 1.Receive IMA203
  • 2.Receive mRNA-4203

Participation Burden

What's physically and logistically required of participants.

Logistics & Travel
In-person visits

Requires travel to a study site

Physical Intervention
Standard

How treatment is administered

Treatment Assignment
All receive treatment

Everyone gets the investigational treatment.

Extracted study details

Pulled from the trial record to show what is being tested and what the study is measuring.

Endpoints

Primary: Number of participants with dose-limiting toxicities (DLTs), Number of treatment emergent adverse events (AEs), AEs of special interest, serious AEs (SAEs), changes in laboratory parameters and vital signs, and frequency of dose interruptions, reductions and discontinuations

Secondary: Disease control rate (DCR), Duration of response (DOR), Objective response rate (ORR), Progression-free survival (PFS)

Body systems

Oncology