FORAGER-1: A Study of LOXO-435 (LY3866288) in Participants With Cancer With a Change in a Gene Called FGFR3

a study on Bladder Cancer Urinary Bladder Tumor Neoplasm Metastasis Ureteral Cancer FGFR Gene Alteration Solid Tumor Transitional Cell Carcinoma Neoplasms

Eligibility: for people ages 18 years and up (full criteria)
Location: at UC Davis UC Irvine UCLA
Dates: study started January 2023
completion around June 2027
Principal Investigator: by Alexandra Drakaki, MD (ucla)

Alexandra Drakaki

Description

Summary

The main purpose of this study is to learn more about the safety, side effects, and effectiveness of LOXO-435 by itself or when it is combined with other standard medicines that treat cancer. LOXO-435 may be used to treat cancer of the cells that line the urinary system and other solid tumor cancers that have a change in a particular gene (known as the FGFR3 gene). Participation could last up to 30 months (2.5 years) and possibly longer if the disease does not get worse.

Official Title

FORAGER-1: A Phase 1, Open-Label, Multicenter Study of LOXO-435 (LY3866288) in Locally Advanced or Metastatic Solid Tumors Including Urothelial Cancer With FGFR3 Alterations

Details

This is an open-label, multi-center, phase 1 study in participants with FGFR3-altered advanced solid tumor malignancy including metastatic urothelial cancer (UC). The study will be conducted in 2 phases: Phase 1a dose escalation (Cohort A1) and dose optimization (Cohort A2) and Phase 1b dose expansion. Phase 1a will assess safety, tolerability, and pharmacokinetics of LOXO-435 to determine the optimal dose for further expansion.

Phase 1b will include 6 dose expansion cohorts to evaluate the efficacy and safety of LOXO-435 as monotherapy or in combinations with pembrolizumab with or without enfortumab vedotin.

Keywords

Urinary Bladder Neoplasms, Neoplasm Metastasis, Ureteral Neoplasms, Bladder Cancer, Bladder Urothelial Carcinoma, Urinary Bladder Cancer, Urinary Tract Cancer, Renal Pelvis Cancer, Ureter Cancer, Neoplasms, Pembrolizumab, LOXO-435, enfortumab vedotin

Eligibility

You can join if…

Open to people ages 18 years and up

Have solid tumor cancer with an FGFR3 pathway alteration on molecular testing in tumor or blood sample that is deemed as actionable
- Cohort A1: Presence of an alteration in FGFR3 or its ligands
- Cohort A2, B2, B3, and B5: Histological diagnosis of urothelial cancer (UC) that is locally advanced or metastatic with a qualifying FGFR3 genetic alteration
- Cohorts B1 and B4: Histological diagnosis of urothelial cancer that is locally advanced or metastatic
- Cohort C1: Must have histological diagnosis of a non-urothelial solid tumor malignancy that is locally advanced or metastatic with a qualifying FGFR3 genetic alteration
Measurability of disease:
- Cohort A1 and B3: Measurable or non-measurable disease as defined by Response Evaluation Criteria in Solid Tumors v 1.1 (RECIST v1.1)
- Cohorts A2, B1, B2, B4, B5, and C1: Measurable disease required as defined by RECIST v1.1
Have adequate tumor tissue sample available. Participants with inadequate tissue sample availability may still be considered for enrollment upon review
Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 for Cohorts A1, A2, B3, and B5
- Less than or equal to 2 for Cohorts B1, B2, B4, and C1
Prior Systemic Therapy Criteria:
- Cohort A1/C1: Participant has received all standard therapies for which the participant was deemed to be an appropriate candidate by the treating Investigator; OR the participant is refusing the remaining most appropriate standard of care treatment; OR there is no standard therapy available for the disease. There is no restriction on number of prior therapies.
- Cohort A2, B2, B3 participants must have received at least one prior regimen, and cohorts B1 and B4 participants at least 2 prior regimens, in the locally advanced or metastatic setting
- There is no restriction on number of prior therapies
Cohort B5: Participants have not received prior systemic therapy for locally advanced or metastatic UC
FGFR inhibitor specific requirements:
- Cohort A1/A2/B3: Prior FGFR inhibitor treatment is permitted but not required
- Cohort B1/B4: Participants must have been previously treated with erdafitinib
- Cohort B2, B5, and C1: Participants must be FGFR inhibitor naïve

You CAN'T join if...

Participants with primary central nervous system (CNS) malignancy
Untreated or uncontrolled CNS metastases
Current evidence of corneal keratopathy or retinal disorder. Individuals with asymptomatic ophthalmic conditions may be eligible
Any serious unresolved toxicities from prior therapy
Significant cardiovascular disease
Prolongation of the QT interval corrected for heart rate using Fridericia's formula (QTcF)
Active uncontrolled systemic infection or other clinically significant medical conditions
Participants who are pregnant, lactating, or plan to breastfeed during the study or within 6 months of the last dose of study treatment. Participants who have stopped breastfeeding may be enrolled

Locations

University of California - Irvine Medical Center not yet accepting patients
Irvine California 92697 United States
UCLA Department of Medicine-Hematology/Oncology accepting new patients
Los Angeles California 90095 United States
University of California, Davis - Health Systems not yet accepting patients
Sacramento California 95817 United States
City Of Hope National Medical Center accepting new patients
Duarte California 91010-0269 United States
Stanford University Clinic not yet accepting patients
Stanford California 94305 United States

Lead Scientist at University of California Health

Alexandra Drakaki, MD (ucla)
HS Associate Clinical Professor, Medicine. Authored (or co-authored) 116 research publications

Details

Status: accepting new patients
Start Date: January 2023
Completion Date: June 2027 (estimated)
Sponsor: Eli Lilly and Company
Links: A Study of LOXO-435 in Patients With Cancer With a Change in a Gene Called FGFR3
ID: NCT05614739
Phase: Phase 1 research study
Study Type: Interventional
Participants: Expecting 535 study participants
Last Updated: April 15, 2025