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Safety and Efficacy of IMC-F106C as a Single Agent and in Combination With Checkpoint Inhibitors

Phase 1/2 Study of IMC-F106C in Advance PRAME-Positive Cancers

Status
Active, not recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04262466
Enrollment
410
Registered
2020-02-10
Start date
2020-02-25
Completion date
2027-12-01
Last updated
2026-03-06

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

Conditions

Select Advanced Solid Tumors

Brief summary

Brenetafusp (IMC-F106C) is an immune-mobilizing monoclonal T cell receptor against cancer (ImmTAC ®) designed for the treatment of cancers positive for the tumor-associated antigen PRAME. This is a first-in-human trial designed to evaluate the safety and efficacy of brenetafusp in adult participants who have the appropriate HLA-A2 tissue marker and whose cancer is positive for PRAME.

Detailed description

The IMC-F106C-101 Phase 1/2 study will be evaluated in patients with metastatic/unresectable tumors which include select Advanced Solid Tumors and will be conducted in two phases. 1. Phase 1: To identify the Maximum Tolerated Dose (MTD) and/or Recommended Phase 2 dose (RP2D) of brenetafusp as a single agent and administered in combination with chemotherapies, targeted therapies, and monoclonal antibodies. 2. Phase 2: To assess the efficacy of brenetafusp in selected advanced solid tumors.

Interventions

Brenetafusp IV infusions

DRUGBrenetafusp and pembrolizumab

Brenetafusp and pembrolizumab IV infusions

DRUGBrenetafusp and chemotherapy

Brenetafusp and chemotherapy IV infusions

DRUGBrenetafusp and monoclonal antibodies and chemotherapy

Brenetafusp and a monoclonal antibody therapy and chemotherapy

DRUGBrenetafusp and tebentafusp

Brenetafusp and tebentafusp IV infusions

DRUGBrenetafusp and bevacizumab

Brenetafusp and bevacizumab IV infusions

DRUGBrenetafusp and kinase inhibitors

Brenetafusp and oral kinase inhibitors

Sponsors

Immunocore Ltd
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

1. ECOG PS 0 or 1 2. HLA-A\*02:01 positive 3. PRAME positive tumor 4. Relapsed from, refractory to, or intolerant of standard therapies; or, in combination with standard therapies 5. If applicable, must agree to use highly effective contraception

Exclusion criteria

1. Symptomatic or untreated central nervous system metastasis 2. Recent bowel obstruction 3. Ongoing ascites or effusion requiring recent drainages 4. Significant immune-mediated adverse event with prior immunotherapy (Participants in checkpoint inhibitor combination treatment) 5. Inadequate washout from prior anticancer therapy 6. Significant ongoing toxicity from prior anticancer treatment 7. Out-of-range laboratory values 8. Clinically significant lung, heart, or autoimmune disease 9. Ongoing requirement for immunosuppressive treatment 10. Prior solid organ or bone marrow transplant 11. Active hepatitis B virus (HBV), hepatitis C virus (HCV), or human immunodeficiency virus (HIV) infection 12. Significant secondary malignancy 13. Hypersensitivity to study drug or excipients 14. Antibiotics, vaccines or surgery within 2-4 weeks prior to the first dose of study intervention 15. Pregnant or lactating participants 16. Any other contraindication for applicable combination partner based on local prescribing information

Design outcomes

Primary

MeasureTime frame
Phase 1: Incidence of dose-limiting toxicity (DLT)sUp to ~28 days after each dose
Phase 1: Incidence of adverse events (AE) and serious adverse events (SAE)Up to 30 days after the last dose of study therapy
Phase 1: Number of participants with dose interruptions, dose reductions, or dose discontinuationsUp to ~12 months
Phase 1: Number of participants with abnormal laboratory test results (hematology)Up to 30 days after the last dose of study therapy
Phase 1: Number of participants with abnormal laboratory test results (chemistry)Up to 30 days after the last dose of study therapy
Phase 1: Number of participants with abnormal laboratory test results (coagulation)Up to 30 days after the last dose of study therapy
Phase 1: Number of participants with abnormal urinalysisUp to 30 days after the last dose of study therapy
Phase 1: Number of participants with abnormal vital signsUp to 30 days after the last dose of study therapy
Phase 1: Mean change from baseline in QTcF intervalUp to 30 days after the last dose of study therapy
Phase 2: Best overall response (BOR)Up to ~2 years

Secondary

MeasureTime frame
Phase I: Best Overall Response (BOR)Up to ~2 years
Progression-free survival (PFS)Up to ~2 years
Duration of response (DOR)Up to ~2 years
Overall survivalUp to ~2 years
Area under the plasma concentration-time curve (AUC) of brenetafuspAt designated time points up to ~3 weeks
Maximum plasma drug concentration (Cmax) of brenetafuspAt designated time points up to ~3 weeks
Time to reach maximum plasma concentration (Tmax) of brenetafuspAt designated time points up to ~3 weeks
Plasma elimination half-life (t½) of brenetafuspAt designated time points up to ~3 weeks
Incidence of anti-brenetafusp antibody formationUp to ~ 2 years
Changes in lymphocyte counts over timeUp to ~3 weeks
Changes in serum cytokines over timeUp to ~3 weeks
Local tumor response based on Gynecological Cancer Intergroup (GCIG) Cancer Antigen 25 (CA-125) response criteriaUp to ~2 years

Countries

Australia, Austria, Belgium, Brazil, Canada, France, Germany, Ireland, Italy, Netherlands, New Zealand, Poland, South Korea, Spain, Switzerland, United Kingdom, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 7, 2026