MedPath

REFOCUS: A First-in-Human Study of Highly Selective FGFR2 Inhibitor, RLY-4008, in Patients With ICC and Other Advanced Solid Tumors

Phase 1
Active, not recruiting
Conditions
FGFR2 Gene Translocation
FGFR2 Gene Activation
Cholangiocarcinoma
Other Solid Tumors, Adult
FGFR2 Gene Mutation
FGFR2 Amplification
FGFR2 Gene Fusion/Rearrangement
Intrahepatic Cholangiocarcinoma
Interventions
Registration Number
NCT04526106
Lead Sponsor
Elevar Therapeutics
Brief Summary

This is a Phase 1/2, open-label, FIH study designed to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PDy), and antineoplastic activity of RLY-4008, a potent and highly selective FGFR2 inhibitor, in patients with unresectable or metastatic cholangiocarcinoma (CCA) and other solid tumors. The study consists of 3 parts: a dose escalation (Part 1), a dose expansion (Part 2), and an extension (Part 3).

Detailed Description

Not available

Recruitment & Eligibility

Status
ACTIVE_NOT_RECRUITING
Sex
All
Target Recruitment
540
Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
Part 4: RolloverRLY-4008Oral dose of RLY-4008 as determined during Part 1 Dose Escalation.
Part 1: Dose EscalationRLY-4008Multiple doses of RLY-4008 for oral administration.
Part 2: Dose ExpansionRLY-4008Oral dose of RLY-4008 as determined during Part 1 Dose Escalation.
Part 3: ExtensionRLY-4008Oral dose of RLY-4008 as determined during Part 1 Dose Escalation.
Primary Outcome Measures
NameTimeMethod
Part 1 and Part 4: Number of patients with adverse events and serious adverse eventsEvery cycle (4-week cycles) until study discontinuation, approximately 24 months
Part 1: Determination of maximum tolerated dose (MTD) and recommended Phase 2 dose (RP2D) of RLY-4008Cycle 1 (4-week cycle) of treatment for MTD and at the end of every cycle (4-week cycles) for RP2D until study discontinuation, approximately 24 months
Part 2 and Part 3: Objective Response Rate (ORR) assessed by Independent Review Committee per RECIST v1.1Approximately every 8 weeks during treatment and every 12 weeks after the last dose in the absence of progressive disease, approximately 36 months
Part 4: Number of patients with dose interruptionsEvery 28-day cycle until end of treatment, approximately 24 months.
Part 4: Number of patients with dose reductionsEvery 28-day cycle until end of treatment, approximately 24 months.
Part 4: Number of patients with dose discontinuationsEvery 28-day cycle until end of treatment, approximately 24 months.
Secondary Outcome Measures
NameTimeMethod
Part 2 and Part 3:Dose intensityEvery 28-day cycle until end of treatment, approximately 24 months.
Part 2 and Part 3: Correlation between FGFR2 genotype by central tissue assessment and antitumor response, as measured by ORRApproximately every 8 weeks during treatment and every 12 weeks after the last dose in the absence of progressive disease, approximately 36 months
Part 1: Pharmacodynamic parameters including changes in carcinoembryonic antigen (CEA)Approximately every 2 weeks in Cycle 1 (4-week cycle) and every other cycle (4-week cycles) from Cycle 3, approximately 24 months
Part 2 and Part 3: Number of patients with dose interruptionsEvery 28-day cycle until end of treatment, approximately 24 months.
Part 2 and Part 3: Number of patients with dose reductionsEvery 28-day cycle until end of treatment, approximately 24 months.
Part 1: Duration of Response (DOR) assessed by Investigator per RECIST v1.1Approximately every 8 weeks during treatment and every 12 weeks after the last dose in the absence of progressive disease, approximately 36 months
Part 1: Pharmacodynamic parameters including changes in fibroblast growth factor 23 (FGF-23)Approximately every 2 weeks in Cycle 1 (4-week cycle) and every other cycle (4-week cycles) from Cycle 3, approximately 24 months
Part 1: Pharmacodynamic parameters including changes in cancer antigen 19-9 (CA 19-9)Approximately every 2 weeks in Cycle 1 (4-week cycle) and every other cycle (4-week cycles) from Cycle 3, approximately 24 months
Part 2 and Part 3: Number of patients with dose discontinuationsEvery 28-day cycle until end of treatment, approximately 24 months.
Part 1: FGFR2 gene status in plasma circulating tumor deoxyribonucleic acid (ctDNA) and tumor tissueEvery cycle (4-week cycles) through Cycle 3 and every other cycle thereafter until study discontinuation, approximately 24 months
Pharmacokinetic parameters including area under the plasma concentration versus time curve (AUC)Approximately every 2 weeks in Cycle 1 (4-week cycle) and every cycle through Cycle 4 (4-week cycles)
Pharmacokinetic parameters including half-life (t1/2)Approximately every 2 weeks in Cycle 1 (4-week cycle) and every cycle through Cycle 4 (4-week cycles)
Part 2 and Part 3: Duration of response (DOR) assessed by Investigator and Independent Review Committee per RECIST v1.1Approximately every 8 weeks during treatment and every 12 weeks after the last dose in the absence of progressive disease, approximately 36 months
Part 2 and Part 3: Progression-free survival (PFS) assessed by Investigator and Independent Review Committee per RECIST v1.1Approximately every 8 weeks during treatment and every 12 weeks after the last dose in the absence of progressive disease, approximately 36 months
Part 1: Disease Control Rate (DCR) as assessed by Investigator per RECIST v1.1Approximately every 8 weeks during treatment and every 12 weeks after the last dose in the absence of progressive disease, approximately 36 months
Part 1, Part 2, and Part 3: Objective Response Rate (ORR) as assessed by Investigator per RECIST v1.1Approximately every 8 weeks during treatment and every 12 weeks after the last dose in the absence of progressive disease, approximately 36 months
Pharmacokinetic parameters including maximum plasma drug concentration (Cmax)Approximately every 2 weeks in Cycle 1 (4-week cycle) and every cycle through Cycle 4 (4-week cycles)
Part 2 and Part 3: Disease control rate (DCR) assessed by Investigator and Independent Review Committee per RECIST v1.1Approximately every 8 weeks during treatment and every 12 weeks after the last dose in the absence of progressive disease, approximately 36 months
Part 2 and Part 3:Overall survival (OS)Up to approximately 36 months.
Part 2 and Part 3:Change from baseline in quality of life as assessed by EORTC QLQ-C30Approximately every 4 weeks during treatment, approximately 24 months

Trial Locations

Locations (46)

The University of Alabama at Birmingham

🇺🇸

Birmingham, Alabama, United States

Mayo Clinic

🇺🇸

Rochester, Minnesota, United States

USC Norris Comprehensive Cancer Center

🇺🇸

Los Angeles, California, United States

UCSF Helen Diller Family Comprehensive Cancer Center

🇺🇸

San Francisco, California, United States

Moffitt Cancer Center

🇺🇸

Tampa, Florida, United States

Winship Cancer Institute, Emory University

🇺🇸

Atlanta, Georgia, United States

University of Chicago Medical Center

🇺🇸

Chicago, Illinois, United States

Massachusetts General Hospital

🇺🇸

Boston, Massachusetts, United States

University of Michigan

🇺🇸

Ann Arbor, Michigan, United States

Memorial Sloan Kettering Cancer Center

🇺🇸

New York, New York, United States

Scroll for more (36 remaining)
The University of Alabama at Birmingham
🇺🇸Birmingham, Alabama, United States

MedPath

Empowering clinical research with data-driven insights and AI-powered tools.

© 2025 MedPath, Inc. All rights reserved.