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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-IL2RA-IL2 Fusion Protein) Alone or in Combination with Cemiplimab in Patients with Advanced Solid Organ Malignancies

Status
Not yet recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2025-523399-22-00
Enrollment
52
Registered
2026-05-08
Start date
Unknown
Completion date
Unknown
Last updated
2026-05-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Melanoma, Advanced Solid Tumours, Clear-Cell Renal-Cell Carcinoma (ccRCC)

Brief summary

Incidence of Dose-Limiting Toxicities (DLTs), Incidence of Treatment-Emergent Adverse Event (TEAEs), Incidence of Serious Adverse Events (SAEs), Incidence of TEAEs leading to treatment discontinuation, Incidence of TEAEs leading to death, Number of participants with Grade ≥3 laboratory abnormalities, Objective Response Rate (ORR) per Response Evaluation Criteria In Solid Tumors (RECIST 1.1) criteria by investigator assessment

Detailed description

ORR based on RECIST 1.1 criteria by investigator assessment, Best Overall Response (BOR) based on RECIST 1.1 criteria, Duration Of Response (DOR) based on RECIST 1.1 criteria, Disease control rate based on RECIST 1.1, Time to response based on RECIST 1.1, Progression Free Survival (PFS) based on RECIST 1.1, Concentrations of REGN10597 in serum, Incidence of Anti-Drug Antibody (ADA) to REGN10597 over time, Magnitude of ADA to REGN10597 over time

Interventions

DRUGLIBTAYO 350 mg concentrate for solution for infusion.

Sponsors

Regeneron Pharmaceuticals Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Incidence of Dose-Limiting Toxicities (DLTs), Incidence of Treatment-Emergent Adverse Event (TEAEs), Incidence of Serious Adverse Events (SAEs), Incidence of TEAEs leading to treatment discontinuation, Incidence of TEAEs leading to death, Number of participants with Grade ≥3 laboratory abnormalities, Objective Response Rate (ORR) per Response Evaluation Criteria In Solid Tumors (RECIST 1.1) criteria by investigator assessment

Secondary

MeasureTime frame
ORR based on RECIST 1.1 criteria by investigator assessment, Best Overall Response (BOR) based on RECIST 1.1 criteria, Duration Of Response (DOR) based on RECIST 1.1 criteria, Disease control rate based on RECIST 1.1, Time to response based on RECIST 1.1, Progression Free Survival (PFS) based on RECIST 1.1, Concentrations of REGN10597 in serum, Incidence of Anti-Drug Antibody (ADA) to REGN10597 over time, Magnitude of ADA to REGN10597 over time

Outcome results

None listed

Source: EU CTIS · Data processed: May 9, 2026