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A Phase 1b/2 Study of Immune and Targeted Combination Therapies in Participants with RCC (KEYMAKER-U03): Substudy 03C in Participants With Recurrent Disease During or After Anti-PD-(L)1 Adjuvant Therapy

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-516437-12-00
Acronym
MK-3475-03C
Enrollment
33
Registered
2025-08-13
Start date
2025-08-29
Completion date
Unknown
Last updated
2026-01-19

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

Conditions

Clear cell renal cell carcinoma

Brief summary

Safety Lead In Phase: Number of participants who experience one or more dose-limiting toxicities (DLTs), Safety Lead In Phase: Number of participants who experience one or more adverse events (AEs), Safety Lead In Phase: Number of participants who discontinue study treatment due to an AE, Efficacy Phase: Number of participants who experience one or more DLTs, Efficacy Phase: Number of participants who experience one or more AEs, Efficacy Phase: Number of participants who discontinue study treatment due to an AE, Efficacy Phase: Objective Response (OR)

Detailed description

Efficacy Phase: Duration of response (DOR), Efficacy Phase: Progression-free survival (PFS), Efficacy Phase: Overall survival (OS), Efficacy Phase: Clinical benefit rate (CBR)

Interventions

DRUGBelzutifan
DRUGXL092

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Safety Lead In Phase: Number of participants who experience one or more dose-limiting toxicities (DLTs), Safety Lead In Phase: Number of participants who experience one or more adverse events (AEs), Safety Lead In Phase: Number of participants who discontinue study treatment due to an AE, Efficacy Phase: Number of participants who experience one or more DLTs, Efficacy Phase: Number of participants who experience one or more AEs, Efficacy Phase: Number of participants who discontinue study treatment due to an AE, Efficacy Phase: Objective Response (OR)

Secondary

MeasureTime frame
Efficacy Phase: Duration of response (DOR), Efficacy Phase: Progression-free survival (PFS), Efficacy Phase: Overall survival (OS), Efficacy Phase: Clinical benefit rate (CBR)

Countries

France, Poland, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026