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Study of REGN5093-M114 (METxMET Antibody-Drug Conjugate) in Adult Patients With Mesenchymal Epithelial Transition Factor (MET) Overexpressing Advanced Cancer

A Phase 1/2 Study of REGN5093-M114 (METxMET Antibody-Drug Conjugate) in Patients With MET Overexpressing Advanced Cancer

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04982224
Enrollment
30
Registered
2021-07-29
Start date
2021-11-09
Completion date
2025-10-15
Last updated
2025-11-03

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

Conditions

Advanced NSCLC

Keywords

Non-small cell lung cancer, Mesenchymal epithelial transition factor (MET), MET Overexpressing Advanced Cancer

Brief summary

This study is researching an experimental drug called REGN5093-M114 by itself and in combination with cemiplimab. The study is focused on advanced non-small cell lung cancer (NSCLC) that produces too much of a protein called mesenchymal epithelial transition factor (MET) on the cancer cell surface. The aim of the study is to see how safe, tolerable, and effective the study drug is. This study will include 3 study groups, or cohorts, and each group is split into 2 parts: Part 1: The main purpose of part 1 is to determine a safe dose of REGN5093-M114 (Cohorts A and B), and in combination with cemiplimab (Cohort C). Part 2: The main purpose of part 2 is to use the REGN5093-M114 dose found for each cohort in part 1 to see how well the study drug works to shrink tumors. The study is looking at several other research questions, including: * What side effects may happen from receiving the study drug * Does the study drug work to reduce or delay the progression of your cancer * How much study drug is in the blood at different times * Does the body make antibodies against the study drug (which could make the drug less effective or could lead to side effects)

Detailed description

The trial was intended to be a Phase 1/2 trial, but no participants were enrolled in Phase 2

Interventions

DRUGREGN5093-M114

Administered by intravenous (IV) infusion

DRUGCemiplimab

Administered by IV infusion

Sponsors

Regeneron Pharmaceuticals
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

Key Inclusion Criteria: 1. Histologically confirmed NSCLC that is at advanced stage for which there are no approved therapies available expected to confer clinical benefit as defined in the protocol 2. Willing to provide tumor tissue from newly obtained biopsy from tumor site. Newly obtained biopsies at tissue screening are required. An archival sample can be accepted only after discussion with the medical monitor and if the sample is not more than 6 months old and was obtained on the treatment regimen prior to study screening or after completion of the last therapy. The enrollment of patients will be based on an immunohistochemistry (IHC)-based assay using freshly obtained tumor biopsies or an archival biopsy as described above. Only patients with MET overexpressing tumors by central IHC analysis will be enrolled. For expansion cohorts only: tumor site for biopsy must not have been irradiated previously and must not be the only measurable lesion. 3. Tumor must overexpress MET protein as defined in the protocol 4. For expansion only: At least one lesion that is measurable by RECIST 1.1. Tumor lesions in a previously irradiated area are considered measurable if progression has been demonstrated in such lesions after radiation. 5. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. 6. Adequate organ and bone marrow function as defined in the protocol Key

Exclusion criteria

1. Has received treatment with an approved systemic therapy or has participated in any study of an investigational agent or investigational device within 2 weeks or 5 half-lives of the prior treatment, whichever is shorter with a minimum of 7 days from the first dose of study therapy 2. Has not yet recovered (ie, grade ≤1 or baseline) from any acute toxicities resulting from prior therapy except as described in the protocol 3. Has received radiation therapy or major surgery within 14 days of first administration of study drug or has not recovered from adverse events as defined in the protocol 4. Another malignancy that is progressing or requires active treatment except as noted in the protocol 5. Untreated or active primary brain tumor, central nervous system (CNS) metastases, leptomeningeal disease, or spinal cord compression as defined in the protocol 6. Encephalitis, meningitis, organic brain disease (eg Parkinson's disease) or uncontrolled seizures in the year prior to first dose of study therapy 7. Uncontrolled infection with human immunodeficiency virus (HIV), hepatitis B or hepatitis C infection; or diagnosis of immunodeficiency as defined in the protocol NOTE: Other protocol-defined Inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Dose limiting toxicities (DLTs)Up to 28 daysDose escalation (Phase 1)
Treatment-emergent adverse events (TEAEs)Through study completion, an average of 2 yearsDose escalation (Phase 1)
Serious adverse events (SAEs)Through study completion, an average of 2 yearsDose escalation (Phase 1)
TEAEs leading to study treatment discontinuationThrough study completion, an average of 2 yearsDose escalation (Phase 1)
TEAEs leading to deathThrough study completion, an average of 2 yearsDose escalation (Phase 1)
Laboratory abnormalities (grade 3 or higher per Common Terminology Criteria for Adverse Events [CTCAE])Through study completion, an average of 2 yearsDose escalation (Phase 1)
Concentrations of REGN5093-M114 in serumThrough study completion, an average of 2 yearsDose escalation (Phase 1)
Total monoclonal antibodies (REGN5093- M114 plus unconjugated antibody) in serumThrough study completion, an average of 2 yearsDose escalation (Phase 1)
Concentrations of M24 in plasmaThrough study completion, an average of 2 yearsDose escalation (Phase 1)
Concentrations of cemiplimab when given in combination with REGN5093-M114Through study completion, an average of 2 yearsDose escalation (Phase 1) Cohort C
Objective response rate (ORR)Through study completion, an average of 2 yearsDose expansion (Phase 2)

Secondary

MeasureTime frameDescription
Titer of ADA against cemiplimab over time, when given in combination with REGN5093-M114Through study completion, an average of 2 yearsDose expansion (Phase 2) Cohort C
Duration of response (DOR)Through study completion, an average of 2 yearsPhase 1 and Phase 2
Disease control rate (DCR)Through study completion, an average of 2 yearsPhase 1 and Phase 2
Time to tumor response (TTR)Through study completion, an average of 2 yearsPhase 1 and Phase 2
Progression free survival (PFS)Through study completion, an average of 2 yearsPhase 1 and Phase 2
ORRThrough study completion, an average of 2 yearsDose escalation (Phase 1)
Incidence of ADA to REGN5093-M114 over time in monotherapyThrough study completion, an average of 2 yearsPhase 1 and Phase 2
Titer of ADA to REGN5093-M114 over time in monotherapyThrough study completion, an average of 2 yearsPhase 1 and Phase 2
Incidence of ADA to REGN5093-M114 over time in combination with cemiplimabThrough study completion, an average of 2 yearsPhase 1 and Phase 2
Titer of ADA to REGN5093-M114 over time in combination with cemiplimabThrough study completion, an average of 2 yearsPhase 1 and Phase 2
Overall survival (OS)Through study completion, an average of 2 yearsPhase 1 and Phase 2
TEAEsThrough study completion, an average of 2 yearsDose expansion (Phase 2)
SAEsThrough study completion, an average of 2 yearsDose expansion (Phase 2)
TEAEs leading to study treatment discontinuationThrough study completion, an average of 2 yearsDose expansion (Phase 2)
TEAEs leading to deathThrough study completion, an average of 2 yearsDose expansion (Phase 2)
Laboratory abnormalities (grade 3 or higher per CTCAE)Through study completion, an average of 2 yearsDose expansion (Phase 2)
Concentrations of REGN5093-M114 in serumThrough study completion, an average of 2 yearsDose expansion (Phase 2)
Total monoclonal antibodies (REGN5093- M114 plus unconjugated antibody) in serumThrough study completion, an average of 2 yearsDose expansion (Phase 2)
Concentrations of M24 in plasmaThrough study completion, an average of 2 yearsDose expansion (Phase 2)
Concentrations of cemiplimab when given in combination with REGN5093-M114Through study completion, an average of 2 yearsDose expansion (Phase 2) Cohort C
Incidence of Anti-drug antibodies (ADA) against cemiplimab over time, when given in combination with REGN5093-M114Through study completion, an average of 2 yearsDose expansion (Phase 2) Cohort C

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026