Tests REGN10597 alone or with cemiplimab in adults with advanced solid tumors
Tests an experimental drug, alone or with cemiplimab, in adults with advanced solid tumors.
Plain-language title generated from the registry record
Registry title: 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
Key facts
- Where
- Lille, Paris, Toulouse, and Villejuif, FranceSee the 4 sites
- Phase
- Phase 1/2
AI summary: who the study is looking for
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for adults with an advanced solid tumor, such as melanoma or clear-cell kidney cancer, to test REGN10597 alone or with cemiplimab.
- Age
- 18 years or older
- Sex
- All sexes can join
- Disease stage
- Advanced solid cancer confirmed by tissue or cell tests, either locally advanced or spread. In the first part, the cancer has grown despite standard treatment. Later groups are melanoma or kidney cancer (RCC) that grew after anti-PD-(L)1 treatment, or first-line melanoma.
- Earlier treatment
- In the first part, the cancer must have grown despite standard treatment. Later groups need melanoma or kidney cancer that grew after anti-PD-(L)1 treatment, or first-line melanoma. People cannot have had IL2, IL15 or IL-7 treatment outside adoptive cell therapy. People cannot have had anti-PD1/PD-L1 treatment as defined in the protocol.
Main reasons for not taking part
- Prior IL2, IL15 or IL-7 treatment outside adoptive cell therapy
- Anti-PD1/PD-L1 or other recent systemic therapy as defined in the protocol
- Radiation or major surgery within 14 days before the first dose, or not yet recovered from side effects
- Ongoing immune-related side effects, or serious autoimmune disease within 5 years or treated with immune-suppressing medicine
- Known allergy to the study drug(s)
Read by machine on 9 November 2026.
Where in France
- Centre Hospitalier Universitaire de LilleLille, FranceNot yet recruiting
- Assistance Publique Hopitaux de ParisParis, FranceNot yet recruiting
- Oncopole Claudius RegaudToulouse, FranceNot yet recruiting
- Institut Gustave RoussyVillejuif, FranceNot yet recruiting
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Regeneron Pharmaceuticals
- Trial code
- NCT06413680EU 2025-523399-22-00
- Record updated
- 28 April 2026
- Original description
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.Read full original descriptionShow less
A Phase 1/2a, Open-Label, Dose Escalation and Dose Expansion First-In-Human Study of the Safety, Tolerability, Activity, and Pharmacokinetics of REGN10597 (Anti-PD-1-IL-2RA-IL-2 Fusion Protein) Alone or in Combination With Cemiplimab in Patients With Advanced Solid Organ Malignancies
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)
Inclusion: Dose escalation cohorts:; Histologically or cytologically confirmed diagnosis of solid malignancy (locally advanced or metastatic) with confirmed progression on standard-of-care therapy. Participants are required to submit archival tissue if it is available; Dose expansion cohorts:; 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 ALL Participants ARE REQUIRED to submit fresh pretreatment biopsy during screening, with an additional exploratory biopsy at other time points.
Exclusion: Prior treatment with Interleukin 2 (IL2)/IL15/IL-7 given outside the context of concurrent administration with adoptive cell therapy; 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; Has received radiation therapy or major surgery within 14 days prior to first dose of study drug or has not yet recovered from AEs; Has had prior anti-cancer immunotherapy within 4 weeks prior to study intervention, or discontinuation of prior anti-cancer immunotherapy due to grade 3 or 4 toxicities; Has ongoing immune-related AEs prior to initiation of study intervention, as defined in the protocol; Has ongoing or recent (within 5 years) evidence of significant autoimmune disease or any other condition that required treatment with systemic immunosuppressive treatments; NOTE: Other Protocol Defined Inclusion / Exclusion Criteria Apply; Has known allergy or hypersensitivity to components of the study drug(s); 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.