A First-In Human (FIH) Study to Find Out How Well REGN10597 Medicine Given Alone or in Combination With Cemiplimab Works in Adult Participants Who Have Cancer With Tumors That Have Spread in Their Body

NCT ID: NCT06413680

Last Updated: 2025-12-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

240 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-09-23

Study Completion Date

2030-02-03

Brief Summary

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This study is researching an experimental drug called REGN10597 alone or in combination with another drug called cemiplimab (called "study drug(s)"). The study is focused on patients with certain solid tumors that are in an advanced stage.

The aim of the study is to see how safe, tolerable, and effective the study drug(s) are.

The study is looking at several other research questions, including:

* What side effects may happen from taking the study drug(s)
* How much study drug(s) is in the blood at different times
* Whether the body makes antibodies against the study drug(s) (which could make the study drug(s) less effective or could lead to side effects)

Detailed Description

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Phase 1: Conducted in the United States only Phase 2: Conducted globally

Conditions

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Melanoma Clear-Cell Renal-Cell Carcinoma (ccRCC) Advanced Solid Tumors

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Phase 1: Monotherapy Dose Escalation

Multiple Dose Level (DL) Cohorts to identify the Recommended Phase 2 Dose (RP2D)

Group Type EXPERIMENTAL

REGN10597

Intervention Type DRUG

Administered per the protocol

Phase 2: Monotherapy Dose Expansion

Cohort 1: Melanoma participants Cohort 2: Clear-cell Renal-Cell Carcinoma (ccRCC) participants

Group Type EXPERIMENTAL

REGN10597

Intervention Type DRUG

Administered per the protocol

Phase 1: Combination Dose Escalation

Multiple DL Cohorts to identify the RP2D

Group Type EXPERIMENTAL

REGN10597

Intervention Type DRUG

Administered per the protocol

Cemiplimab

Intervention Type DRUG

Administered per the protocol

Phase 2: Combination Dose Expansion

Cohort 1: Melanoma participants

Group Type EXPERIMENTAL

REGN10597

Intervention Type DRUG

Administered per the protocol

Cemiplimab

Intervention Type DRUG

Administered per the protocol

Interventions

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REGN10597

Administered per the protocol

Intervention Type DRUG

Cemiplimab

Administered per the protocol

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

Dose escalation cohorts:

1. Histologically or cytologically confirmed diagnosis of solid malignancy (locally advanced or metastatic) with confirmed progression on standard-of-care therapy
2. Participants are required to submit archival tissue if it is available

Dose expansion cohorts:

1. Histologically of cytologically confirmed diagnosis of one of the following tumors with criteria, as defined in the protocol:

* Module 1, Cohort 1: anti-PD-(L)1 Progressed Melanoma or
* Module 1, Cohort 2: anti-PD-(L)1 Progressed RCC or
* Module 2, Cohort 1: 1L Melanoma
2. ALL Participants ARE REQUIRED to submit fresh pretreatment biopsy during screening, with an additional exploratory biopsy at other time points

Exclusion Criteria

1. Prior treatment with Interleukin 2 (IL2)/IL15/IL-7 given outside the context of concurrent administration with adoptive cell therapy
2. Prior treatment with anti-PD1/PD-L1, or an approved systemic therapy or any previous systemic non-immunomodulatory biologic therapy within 4 weeks, as defined in the protocol
3. Has received radiation therapy or major surgery within 14 days prior to first dose of study drug or has not yet recovered from AEs
4. Has had prior anti-cancer immunotherapy within 4 weeks prior to study intervention, and discontinuation due to grade 3 or 4 toxicities
5. Has ongoing immune-related AEs prior to initiation of study intervention, as defined in the protocol
6. Has known allergy or hypersensitivity to components of the study drug(s)
7. Has any condition requiring ongoing/continuous corticosteroid therapy (\>10 mg prednisone/day or anti-inflammatory equivalent) within 1-2 weeks to the first dose of study intervention
8. Has ongoing or recent (within 5 years) evidence of significant autoimmune disease or any other condition that required treatment with systemic immunosuppressive treatments
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Regeneron Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Clinical Trial Management

Role: STUDY_DIRECTOR

Regeneron Pharmaceuticals

Locations

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USC Norris Comprehensive Cancer Center

Los Angeles, California, United States

Site Status RECRUITING

University of California San Francisco (UCSF)

San Francisco, California, United States

Site Status RECRUITING

Yale School of Medicine

North Haven, Connecticut, United States

Site Status RECRUITING

University of Chicago

Chicago, Illinois, United States

Site Status RECRUITING

Start Midwest Cancer Research

Grand Rapids, Michigan, United States

Site Status RECRUITING

Northwell Health

Lake Success, New York, United States

Site Status RECRUITING

University of North Carolina at Chapel Hill

Chapel Hill, North Carolina, United States

Site Status RECRUITING

University of Pittsburgh Medical Center - Hillman Cancer Center

Pittsburgh, Pennsylvania, United States

Site Status RECRUITING

MD Anderson Cancer Center

Houston, Texas, United States

Site Status RECRUITING

Next Oncology

San Antonio, Texas, United States

Site Status RECRUITING

The Start Center for Cancer Care

San Antonio, Texas, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Clinical Trials Administrator

Role: CONTACT

844-734-6643

Related Links

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Other Identifiers

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2025-523399-22-00

Identifier Type: CTIS

Identifier Source: secondary_id

R10597-ONC-22114

Identifier Type: -

Identifier Source: org_study_id

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