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M1231 in Participants With Solid Tumors

A Phase I Open Label First in Human Dose Escalation and Expansion Study of the Bispecific Anti-Mucin 1 - Epidermal Growth Factor Receptor Antibody Drug Conjugate M1231 as a Single Agent in Participants With Advanced Solid Tumors

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04695847
Enrollment
23
Registered
2021-01-05
Start date
2021-01-13
Completion date
2023-06-23
Last updated
2023-07-07

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

Conditions

Esophageal Cancer, Metastatic Solid Tumors, Non-Small Cell Lung Cancer

Keywords

M1231, Non-Small Cell Lung Cancer, Metastatic Solid Tumors, Esophageal cancer, Maximum tolerated dose, Pharmacokinetics

Brief summary

This study is to establish a safe and tolerable dose and to investigate pharmacokinetics and the first clinical efficacy signals of M1231 as a single agent in participants with solid tumors (Part 1) and with metastatic Non-small Cell Lung Cancer (NSCLC) and esophageal squamous cell carcinoma (Part 2). Dose escalation will be followed by the dose expansion once the maximum tolerated dose (MTD) or recommended dose for Expansion (RDE) has been defined.

Interventions

DRUGM1231

M1231 will be administered at escalated doses every three weeks until disease progression, unacceptable toxicity, withdrawal of consent, or any criterion for withdrawal from the study.

Sponsors

Merck KGaA, Darmstadt, Germany
CollaboratorINDUSTRY
EMD Serono Research & Development Institute, Inc.
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

For Part 1 and 2: * The Investigator reviews the medical history, menstrual history, and recent sexual activity to decrease the risk for inclusion of a female with an early undetected pregnancy For Part 1: * Locally advanced or metastatic disease that is intolerant or refractory to standard therapy or for which no standard therapy is judged appropriate by the investigator * Participants with solid tumors expressing or likely to expressing EGFR and MUC1, including but not limited to lung cancer, squamous esophageal cancer, head and neck squamous cell carcinoma, breast cancer and ovarian cancer, should be prioritized for enrollment For Part 2: * Cohort A: Participants must have progressed on at least 2 prior lines of therapy * Cohort B: Participants must have progressed on at least 1 prior line of platinum therapy and for microsatellite instability-high (MSI-H) at least 1 prior line with pembrolizumab * Eastern Cooperative Oncology Group (ECOG) Performance Status less than 1 * Tumor accessible for biopsies and agreement to conduct fresh tumor biopsies at Screening and before first dosing

Exclusion criteria

* Participants not recovered from adverse events (AE) (less than or equal to Grade 1) related to previous therapies (excluding Grade 1 neuropathy and alopecia) * Participant has a history of a second malignancy within 3 years before the date of enrollment * Known brain metastasis * Unstable angina, myocardial infarction, congestive heart failure or a coronary revascularization procedure within 180 days of study entry * Cerebrovascular accident/stroke * Diagnosis of fever within 1 week prior to study intervention administration * Life expectancy of less than 4 months * Steroid therapy for anti-neoplastic intent taken less than 7 days prior to the first dose of study intervention * Major surgery within 4 weeks prior to start of study intervention * Received growth factors (including erythropoietin (EPO), darbepoetin, granulocyte-colony stimulating factor (G-CSF), granulocyte macrophage-colony stimulating factor (GM-CSF), and platelet stimulators or transfusions within 2 weeks prior to the first day of study intervention

Design outcomes

Primary

MeasureTime frame
Part 1: Number of Participants with Dose Limiting Toxicities (DLTs)Day 1 Up to Day 21
Part 1: Number of Participants with Treatment Emergent Adverse Events (TEAEs) and Treatment Related TEAEsFrom Baseline until 4 months
Part 2: Objective Response (OR) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by InvestigatorsFrom Baseline until 6 months
Part 2: Number of Participants with Treatment Emergent Adverse Events (TEAEs) and Treatment Related TEAEsFrom Baseline until 6 months
Part 2: Duration of Response (DoR) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by InvestigatorsFrom Baseline until 6 months

Secondary

MeasureTime frame
Part 1: Dose Normalized Area Under Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC0-last/Dose) of M1231 (Conjugated Payload), Total Antibody and Free PayloadCycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Dose Normalized Area Under Concentration-Time Curve From Time Zero (dosing time) Extrapolated to Infinity (AUC0-inf/Dose) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Area Under Concentration From Time tlast Extrapolated to Infinity (AUCextra%) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Observed Concentration At The End of The Infusion Period (Ceoi) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Total Body Clearance (CL) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Plasma Concentration Observed Immediately Before Next Dosing (Ctrough) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Accumulation Ratio for AUCtau (Racc[AUCtau]) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Accumulation Ratio for Maximum Observed Concentration (Racc[Cmax]) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Apparent Terminal Half-life (t1/2) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Time to Reach Maximum Plasma Concentration (tmax) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Apparent Volume of Distribution During Terminal Phase Following Extravascular Administration (Vz) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Number of Participants with Corrected QT Interval (QTc)Cycle 1 Day 1 to Cycle 3 Day 8 (each Cycle is of 21 days)
Part 1: Number of Participants With Anti-Drug Antibodies (ADA) against M1231From Baseline until 4 months
Part 1: Levels of Titers of Anti-Drug Antibody (ADA) against M1231From Baseline until 4 months
Part 1: Level of Mucin 1 (MUC1) Protein Expression in Archival Tumor Tissue Determined by AssayFrom Baseline until 4 months
Part 1: Level of Epidermal Growth Factor Receptor (EGFR) Protein Expression in Archival Tumor Tissue Determined by AssayFrom Baseline until 4 months
Part 1: Renal Clearance of Unconjugated Hemiasterlin Analogue (a tubulin inhibitor in tumor cells)From Baseline until 4 months
Part 1:Objective Response (OR) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by InvestigatorsFrom Baseline until 4 months
Part 1: Duration of Response (DoR) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by InvestigatorsFrom Baseline until 4 months
Part 1: Progression-free survival (PFS) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by InvestigatorsFrom Baseline until 4 months
Part 2: Progression-free survival (PFS) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by InvestigatorsFrom Baseline until 6 months
Part 2: Overall Survival (OS) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by InvestigatorsFrom Baseline until 6 months
Part 2: Level of Epidermal Growth Factor Receptor (EGFR) Protein Expression in Archival Tumor Tissue Determined by AssayFrom Baseline until 6 months
Part 2: Area Under Plasma Concentration-Time Curve Within One Dosing Interval (AUC0-tau) of M1231 (Conjugated Payload), Total Antibody and Free Payload M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2: Dose Normalized Area Under Concentration-Time Curve Within One Dosing Interval (AUC0-tau/Dose) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Area Under the Concentration-time Curve From Time Zero to the Last Sampling time (AUC 0-tlast) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2: Dose Normalized Area Under Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC0-last/Dose) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Area Under the Plasma Concentration-Time Curve From Time Zero to Infinity (AUC0-inf) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Dose Normalized Area Under Concentration-Time Curve From Time Zero (dosing time) Extrapolated to Infinity (AUC0-inf/Dose) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Area Under Concentration From Time tlast Extrapolated to Infinity (AUCextra%) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Observed Concentration At The End of The Infusion Period (Ceoi) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2: Total Body Clearance (CL) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Plasma Concentration Observed Immediately Before Next Dosing (Ctrough) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Accumulation Ratio for AUCtau (Racc[AUCtau]) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Accumulation Ratio for Maximum Observed Concentration (Racc[Cmax]) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Apparent Terminal Half-life (t1/2) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Time to Reach Maximum Plasma Concentration (tmax) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Apparent Volume of Distribution During Terminal Phase Following Extravascular Administration (Vz) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 3 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 6 months
Part 2:Number of Participants with Anti-Drug Antibodies (ADA) against M1231From Baseline until 6 months
Part 2: Level of Mucin 1 (MUC1) Protein Expression in Archival Tumor Tissue Determined by AssayFrom Baseline until 6 months
Part 2: Number of Participants with Corrected QT Interval (QTc)Cycle 1 Day 1 to Cycle 3 Day 8 (each Cycle is of 21 days)
Part 2: Levels of Titers of Anti-Drug Antibody (ADA) against M1231From Baseline until 6 months
Part 1: Area Under the Plasma Concentration-Time Curve From Time Zero to Infinity (AUC0-inf) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1:Area Under Plasma Concentration-Time Curve Within One Dosing Interval (AUC0-tau) of M1231 (Conjugated Payload), Total Antibody and Free Payload M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Dose Normalized Area Under Concentration-Time Curve Within One Dosing Interval (AUC0-tau/Dose) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months
Part 1: Area Under the Concentration-time Curve From Time Zero to the Last Sampling time (AUC 0-tlast) of M1231 (Conjugated Payload), Total Antibody and Free Payload for M1231Cycle 1 Day 1 to Cycle 3 Day 15 and every second cycle from Cycle 4 (each cycle is of 21 days), assessed up to approximately 4 months

Countries

Canada, United States

Outcome results

None listed

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