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A Study of MT-4561 in Patients With Various Advanced Solid Tumors

Phase 1
Recruiting
Conditions
Head and Neck Squamous Cell Carcinoma (HNSCC)
Non-small Cell Lung Cancer (NSCLC)
Esophageal Cancer
Gastric Cancer
Biliary Tract Cancer
Pancreatic Ductal Adenocarcinoma (PDAC)
Breast Cancer
Ovarian Cancer
Cervical Cancer
Endometrial Cancer
Interventions
Registration Number
NCT06943521
Lead Sponsor
Mitsubishi Tanabe Pharma America Inc.
Brief Summary

This is a First In Human (FIH), multicenter, open-label, Phase I/II study to evaluate safety, tolerability, Pharmacokinetics (PK), pharmacodynamics, and efficacy of MT-4561 in patients with advanced solid tumors. This study will be conducted in 3 parts.

Part 1 is aimed at evaluating safety, tolerability, PK and pharmacodynamics of MT-4561 and determining the Maximum Tolerated Dose (MTD) using the Bayesian Optimal Interval (BOIN) design.

The study details and doses of Part 2 (dose-optimization) and Part 3 (Drug-Drug Interaction) will be available after review of applicable Part 1 results.

Detailed Description

Not available

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
27
Inclusion Criteria
  • Male or female patient aged 18 years or older at the time of signing the informed consent form
  • ≥ 1 measurable lesion by the RECIST v1.1 and ≥ 1 disease site for tumor biopsy
  • Eastern Cooperative Oncology Group performance status: 0 to 1
  • Life expectancy of at least 3 months
  • Adequate bone marrow function
  • Adequate hepatic function
  • Adequate renal function estimated creatinine clearance ≥ 60 mL/min calculated using the Cockcroft and Gault equation or by institutional method
  • Part 1: Patients must have a confirmed histologic or cytologic diagnosis of one of the following solid tumors for participation in the study: head and neck squamous cell carcinoma (HNSCC), non-small cell lung cancer (NSCLC), esophageal cancer, gastric cancer, biliary tract cancer, pancreatic ductal adenocarcinoma (PDAC), breast cancer, ovarian cancer, cervical cancer, endometrial cancer, prostate cancer, urothelial carcinoma, neuroendocrine tumor (NET) or neuroendocrine carcinoma (NEC), soft tissue sarcoma, and NUT carcinoma.

Main

Exclusion Criteria
  • Patients with active brain or leptomeningeal metastases
  • Any unresolved toxicity ≥ Grade 2 from previous anticancer therapy except for alopecia
  • Prior systemic anticancer therapy within 4 weeks before first dose of investigational medicinal product (IMP) or 5 half-lives, whichever is shorter, and prior radiotherapy within 2 weeks before first dose of IMP
  • History of congenital long QT syndrome or clinically significant ventricular arrhythmias (such as ventricular tachycardia, ventricular fibrillation or Torsades de pointes)
  • Patients who received drugs with a known risk of QT interval prolongation or Torsades de pointes within 14 days or 5 half-lives, whichever is longer, before the start of IMP administration
  • QT interval corrected for heart rate using Fridericia's correction (QTcF) > 470 msec at screening

Study & Design

Study Type
INTERVENTIONAL
Study Design
SINGLE_GROUP
Arm && Interventions
GroupInterventionDescription
Part 1 (Dose-escalation)MT-4561Intravenous (IV) infusion of MT-4561 once every week in 28-day cycle, until disease progression or discontinuation criteria are met.
Primary Outcome Measures
NameTimeMethod
Incidence of Adverse Event, Dose limiting toxicities (DLTs)a 28-day cycle

Part 1 Frequency, duration, and severity (Common Terminology Criteria for Adverse Events \[CTCAE\] v5.0) of adverse events, dose limiting toxicity (DLT), physical examinations, changes in clinical laboratory values, vital signs, electrocardiogram

DLTs are defined as any event meeting the DLT criteria at least possibly related to MT-4561 for Cycle 1 (i.e., DLT monitoring window is approximately 28 days). Events with a clear alternative explanation will not be considered DLTs.

Number of Patients with Adverse events (AEs)Screening through 30 days after last dose

Part 1 Frequency, duration, and severity (Common Terminology Criteria for Adverse Events \[CTCAE\] v5.0) of adverse events, dose limiting toxicity (DLT), physical examinations, changes in clinical laboratory values, vital signs, electrocardiogram

Adverse event: An AE is defined as any untoward medical occurrence in a clinical study patient administered a pharmaceutical product, and which does not necessarily have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of an IMP, whether or not it is considered related to the IMP.

Secondary Outcome Measures
NameTimeMethod
Cmax of MT-4561Cycle 1 Day 1 through Cycle 2 Day 22, Cycle 3 Day 1 and Day 15, Subsequent Cycle only Day 1 (each cycle is 28 days)

To determine the pharmacokinetics(PK) profile of MT-4561

area under the concentration-time curve from zero up to 168 hours post-dose (AUC0-168)Cycle 1 Day 1 through Cycle 2 Day 22, Cycle 3 Day 1 and Day 15, Subsequent Cycle only Day 1 (each cycle is 28 days)

To determine the pharmacokinetics(PK) profile of MT-4561

clearance (CL) after the first dose and at steady stateCycle 1 Day 1 through Cycle 2 Day 22, Cycle 3 Day 1 and Day 15, Subsequent Cycle only Day 1 (each cycle is 28 days)

To determine the pharmacokinetics(PK) profile of MT-4561

dose proportionalityCycle 1 Day 1 through Cycle 2 Day 22, Cycle 3 Day 1 and Day 15, Subsequent Cycle only Day 1 (each cycle is 28 days)

To determine the pharmacokinetics(PK) profile of MT-4561

accumulation ratioCycle 1 Day 1 through Cycle 2 Day 22, Cycle 3 Day 1 and Day 15, Subsequent Cycle only Day 1 (each cycle is 28 days)

To determine the pharmacokinetics(PK) profile of MT-4561

Objective Response Rate (ORR)From Cycle 1 Day 1 until Progressive Disease/Death/or start of new anticancer therapy, up to approximately 3 years

ORR defined as percentage of patients with a best overall response of complete response (CR) and partial response (PR) per Investigator review according to RECIST v1.1 criteria

Duration of Response (DOR)From Cycle 1 Day 1 until Progressive Disease/Death/or start of new anticancer therapy, up to approximately 3 years

Investigator Review according to RECIST v1.1 criteria

Progression-Free Survival (PFS)From Cycle 1 Day 1 until the first documented objective disease progression or death due to any cause, whichever occurs first, up to approximately 3 years

Investigator Review according to RECIST v1.1 criteria

time corresponding to occurrence of Cmax (tmax)Cycle 1 Day 1 through Cycle 2 Day 22, Cycle 3 Day 1 and Day 15, Subsequent Cycle only Day 1 (each cycle is 28 days)

To determine the pharmacokinetics(PK) profile of MT-4561

minimum observed plasma concentration (Cmin)Cycle 1 Day 1 through Cycle 2 Day 22, Cycle 3 Day 1 and Day 15, Subsequent Cycle only Day 1 (each cycle is 28 days)

To determine the pharmacokinetics(PK) profile of MT-4561

Overall Survival (OS)From Cycle 1 Day 1 until Death, up to approximately 3 years

Investigator Review according to RECIST v1.1 criteria

Trial Locations

Locations (3)

University of Southern California

🇺🇸

Los Angeles, California, United States

START Midwest

🇺🇸

Grand Rapids, Michigan, United States

The University of Texas MD Anderson Cancer Center

🇺🇸

Houston, Texas, United States

University of Southern California
🇺🇸Los Angeles, California, United States

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