A Phase 1, Dose-Escalation Trial of PT2385 Tablets In Patients With Advanced Clear Cell Renal Cell Carcinoma (MK-3795-001)

Phase 1Active Not RecruitingNCT02293980

Peloton Therapeutics, Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)110 enrolled

Overview

PART 1: The primary objective of this study is to identify the maximum tolerated dose (MTD) of MK-3795, formerly called PT2385 and/or the recommended Phase 2 dose (RP2D) of MK-3795 in patients with advanced clear cell renal cell carcinoma (ccRCC). PART 2: The primary objective of this study is to identify the MTD of MK-3795 up to the RP2D, in combination with nivolumab, in patients with advanced ccRCC.As of Amendment 09 (29 Mar 2024), participants with advanced ccRCC will transition from MK-3795 to belzutifan (MK-6482) in combination with nivolumab or belzutifan alone. PART 3: The primary objective of this study is to identify the MTD of MK-3795 up to the RP2D, in combination with cabozantinib tablets, in patients with advanced ccRCC.

PART 1: This is a Phase 1, multiple-dose, dose-escalation trial of MK-3795, where patients with advanced ccRCC will be assigned to sequential dose cohorts. Patient safety will be monitored with frequent physical examinations, vital sign measurements, electrocardiograms (ECGs), and hematology and chemistry laboratory studies, and by recording all adverse events (AEs). Blood will be obtained for analysis of the concentration of MK-3795 and to assess biomarkers. PART 2: This is a Phase 1 trial of MK-3795 in combination with nivolumab, where patients with advanced ccRCC will be assigned to dose cohorts. Patient safety will be monitored with frequent physical examinations, vital sign measurements, ECGs, and hematology and chemistry laboratory studies, and by recording all AEs. Blood will be obtained for analysis of the concentration of MK-3795 and to assess biomarkers. As of Amendment 09 (29 Mar 2024), participants with advanced ccRCC will transition from MK-3795 to belzutifan in combination with nivolumab or belzutifan alone. PART 3: This is a Phase 1 trial of MK-3795 in combination with cabozantinib tablets, where patients with advanced ccRCC will be assigned to dose cohorts. Patient safety will be monitored with frequent physical examinations, vital sign measurements, ECGs, and hematology and chemistry laboratory studies, and by recording all AEs. Blood will be obtained for analysis of the concentration of MK-3795 and cabozantinb and to assess biomarkers.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria PART 1 * Has locally advanced or metastatic clear cell renal cell carcinoma (ccRCC) and has progressed during treatment with at least one prior therapeutic regimen * Has a life expectancy of ≥ 3 months * Has adequate organ function * Able to swallow oral medications PART 2 - In addition to PART 1 * Received no more than three prior systemic treatment regimens in the advanced or metastatic setting * Must have received at least one but not more than two prior anti-angiogenic therapy regimens PART 3 - In addition to PART 1 * Must have received at least one vascular endothelial growth factor receptor (VEGFR) targeting tyrosine kinase inhibitor Exclusion Criteria PART 1 * Has a history of untreated brain metastasis or history of leptomeningeal disease or spinal cord compression * Has failed to recover from the reversible effects of prior anticancer therapy * Has uncontrolled or poorly controlled hypertension * Is receiving warfarin anticoagulant therapy or expected to require warfarin * Has had any major cardiovascular event within 6 months prior to study drug administration * Has any other clinically significant cardiac, respiratory, or other medical or psychiatric condition that might interfere with participation in the trial or interfere with the interpretation of trial results * Has had major surgery within 4 weeks before first study drug administration * Has known human immunodeficiency virus (HIV) infection * Has an active infection requiring systemic treatment * Is participating in another therapeutic clinical trial PART 2 - In addition to PART 1 * Has received prior immunotherapy * Has any active or recent history of a known or suspected autoimmune disease PART 3 - In addition to PART 1 * Has gastrointestinal (GI) disorders * Has any history of congenital long QT syndrome

Locations (25)

Cedars-Sinai Medical Center

Los Angeles, California, United States

University of Colorado Cancer Center

Aurora, Colorado, United States

Yale School of Medicine

New Haven, Connecticut, United States

University of Miami - Sylvester Comprehensive Cancer Center

Miami, Florida, United States

Emory University Winship Cancer Institue

Atlanta, Georgia, United States

Rush University Medical Center

Chicago, Illinois, United States

Indiana University Simon Cancer Center

Indianapolis, Indiana, United States

University of Maryland - Greenebaum Cancer Center

Baltimore, Maryland, United States

Massachusetts General Hospital - Cancer Center

Boston, Massachusetts, United States

Beth Israel Deconess Medical Center

Boston, Massachusetts, United States

...and 15 more locations

Outcomes

Primary Outcomes

Maximum Tolerated Dose (MTD)

MTD of MK-3795 will be determined. MTD will be defined as the dose level at which 2 or more participants experience a dose limiting toxicity (DLT) which will be deemed intolerable and the dose level below will be declared the MTD.

Time frame: Part 1: 3 Weeks, Part 2: 4 Weeks, Part 3: 4 Weeks

Recommended Phase 2 Dose (RP2D)

The RP2D of MK-3795 will be determined. The RP2D will be determined based on the MTD (or the optimal biological dose (OBD) if the MTD is not identified), the overall safety profile with continued treatment, and pharmacokinetic (PK) profile.

Time frame: Part 1: 3 Weeks; Part 2: 4 Weeks, Part 3: 4 Weeks

Secondary Outcomes

Number of Participants Who Experience an Adverse Event (AE)

An AE is defined as any untoward medical occurrence in a participant administered a study treatment which did not necessarily have to have a causal relationship with this treatment. An AE could be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of study treatment, whether or not considered related to the study treatment. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a pre-existing condition that is temporally associated with the use of study treatment, is also an AE. The number of participants who experience an AE will be presented.

Time frame: Up to approximately 9 years

Best Response (BOR) per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)

BOR is the best tumor response recorded up until documentation of progression of disease (PD) or death from any cause, or until the patient withdraws consent. Per RECIST 1.1, PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD.

Time frame: Up to approximately 1 year

Objective Response Rate (ORR) per RECIST 1.1

ORR is defined as the percentage of participants who have a Complete Response (CR: Disappearance of all target lesions) or a Partial Response (PR: At least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1. The percentage of participants who experience a CR or PR based on RECIST 1.1 will be presented.

Time frame: Up to approximately 1 year

Progression-Free Survival (PFS) per RECIST 1.1

PFS is defined as the time from the first dose of MK-3795 to the first documented progressive disease (PD) or death due to any cause, whichever occurs first. Per RECIST 1.1, PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD.

Time frame: Up to approximately 9 years

Duration of Response (DOR) per RECIST 1.1

For participants who demonstrate a confirmed Complete Response (CR: Disappearance of all target lesions) or confirmed Partial Response (PR: At least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1, DOR is defined as the time from first documented evidence of CR or PR until progressive disease (PD) or death. Per RECIST 1.1, PD was defined as at least a 20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also have demonstrated an absolute increase of at least 5 mm. The appearance of one or more new lesions was also considered PD. The median DOR will be presented.

Time frame: Up to approximately 1 year

Clinical Benefit Rate (CBR) per RECIST 1.1

CBR is defined as the percentage of participants who achieve clinical benefit. Clinical benefit is defined as a best response of CR (Disappearance of all target lesions), PR (At least a 30% decrease in the sum of diameters of target lesions) or stable disease (SD: Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease \[PD: At least a 20% increase in the sum of diameters of target lesions and an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered PD.\]).

Time frame: Up to approximately 1 year

Maximum concentration (Cmax) of Study Treatment

Blood samples will be collected at designated timepoints for the determination of Cmax. Cmax was defined as the maximum concentration of study treatment is reached.