Clinical trial Recruiting at 11 sites Phase1; Phase2 Interventional Ages 18 and up

Testing a new drug for advanced solid tumors

Official title: 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

Run by Regeneron Pharmaceuticals · NCT06413680 · Data updated 2026-11-12

This study is testing a new drug called REGN10597 to see if it is safe and effective for adults with advanced solid tumors like melanoma and kidney cancer.

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment240 (estimated)
SponsorRegeneron Pharmaceuticals
Industry-sponsored
Drugs / interventionsimmunotherapy, radiation, prednisone, cemiplimab
Locations11 sites (Los Angeles, California and 10 other locations)
StatusRecruiting
StartedSeptember 23, 2024
Main results expectedFebruary 3, 2030
Study endsFebruary 3, 2030
Registry record updatedApril 28, 2026
Trial IDNCT06413680 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults with histologically confirmed advanced melanoma or clear-cell renal-cell carcinoma who have progressed on standard-of-care therapies.

Probably not a fit

Patients who have recently received certain immunotherapies or systemic therapies may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial is investigating the safety and effectiveness of an experimental drug called REGN10597 in adult patients with advanced solid organ malignancies, including melanoma and clear-cell renal-cell carcinoma. The study is divided into two phases, with Phase 1 focusing on dose-escalation to determine safety and tolerability, while Phase 2 will expand to a broader patient population globally. Participants will undergo assessments to monitor side effects, drug levels in the blood, and the body's immune response to the drug. Archival and fresh tissue samples will be collected to support the research.

Why it matters

Potential benefit: If successful, this study could provide a new treatment option for patients with advanced solid tumors that have not responded to standard therapies.

How similar studies have gone: Other studies have shown promise with similar immunotherapy approaches, but this specific drug is being tested for the first time in humans.

Who can join: the full rules

Show full inclusion / exclusion criteria
Key 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. 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 ALL Participants ARE REQUIRED to submit fresh pretreatment biopsy during screening, with an additional exploratory biopsy at other time points

Key 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, or discontinuation of prior anti-cancer immunotherapy 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

NOTE: Other Protocol Defined Inclusion / Exclusion Criteria Apply.

Where it's running

  • USC Norris Comprehensive Cancer Center
    Los Angeles, California, United States
    Recruiting
  • University of California San Francisco (UCSF)
    San Francisco, California, United States
    Recruiting
  • Yale School of Medicine
    North Haven, Connecticut, United States
    Recruiting
  • University of Chicago
    Chicago, Illinois, United States
    Recruiting
  • Start Midwest Cancer Research
    Grand Rapids, Michigan, United States
    Recruiting
  • Northwell Health
    Lake Success, New York, United States
    Recruiting
Show 5 more locations
  • University of North Carolina at Chapel Hill
    Chapel Hill, North Carolina, United States
    Recruiting
  • University of Pittsburgh Medical Center - Hillman Cancer Center
    Pittsburgh, Pennsylvania, United States
    Recruiting
  • MD Anderson Cancer Center
    Houston, Texas, United States
    Recruiting
  • Next Oncology
    San Antonio, Texas, United States
    Recruiting
  • The Start Center for Cancer Care
    San Antonio, Texas, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.