A Study of TAS-120 in Patients With Metastatic Breast Cancer

NCT ID: NCT04024436

Last Updated: 2025-11-13

Study Results

Results available

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Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE2

Total Enrollment

64 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-01-28

Study Completion Date

2023-09-06

Brief Summary

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The purpose of the trial is to evaluate a patient's response to a Fibroblast Growth Factor Receptor (FGFR) inhibitor, futibatinib (TAS-120), used either alone or in combination with the hormonal therapy, fulvestrant. This study will be conducted in patients with metastatic breast cancer who have specific Fibroblast Growth Factor Receptor gene abnormalities and who have previously received conventional therapies to treat their breast cancer, or who are not able to tolerate certain cancer therapies. This study will also evaluate the safety of taking futibatinib, or futibatinib and fulvestrant, by learning about the potential side effects.

Detailed Description

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This is a Phase 2, open-label, non-randomized, multicenter study designed to evaluate the efficacy and safety of futibatinib (TAS-120) and futibatinib + fulvestrant in up to 168 adult patients with locally advanced/metastatic breast cancer harboring FGFR gene amplifications. Patients will be enrolled to 1 of 4 treatment cohorts based on diagnosis and FGFR gene amplification status, and will receive either single agent futibatinib in Cohorts 1-3 or futibatinib plus fulvestrant in Cohort 4, as follows:

* Cohort 1 - HR+ HER2- Measurable Disease w/ FGFR2 Amplification
* Cohort 2 - TNBC Measurable Disease w/ FGFR2 Amplification
* Cohort 3 - HR+ HER2- or TNBC Non-Measurable Disease w/ FGFR2 Amplification
* Cohort 4 - HR+ HER2- Measurable Disease w/ FGFR1 Amplification

Conditions

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Metastatic Breast Cancer FGFR 1 High Amplification FGFR2 Amplification

Keywords

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Futibatinib Metastatic Breast Cancer FGFR TAS-120

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Futibatinib (Cohort 1)

Participants with advanced or metastatic hormone receptor - positive (HR+), human epidermal growth factor receptor 2 - negative (HER2-) breast cancer, harboring fibroblast growth factor receptor 2 (FGFR2) gene amplification, with measurable disease received futibatinib, 20 milligrams (mg), oral tablets, once daily for a continuous 28-day cycle up to maximum of 244 days.

Group Type EXPERIMENTAL

Futibatinib

Intervention Type DRUG

Futibatinib 20mg once daily on a 28-day cycle

Futibatinib (Cohort 2)

Participants with advanced or metastatic triple negative breast cancer (TNBC), harboring FGFR2 gene amplification, with measurable disease received futibatinib, 20 mg, oral tablets, once daily for a continuous 28-day cycle up to maximum of 1066 days.

Group Type EXPERIMENTAL

Futibatinib

Intervention Type DRUG

Futibatinib 20mg once daily on a 28-day cycle

Futibatinib (Cohort 3)

Participants with advanced or metastatic HR+, HER2- or TNBC, harboring FGFR2 gene amplification, with non-measurable disease received futibatinib, 20 mg, oral tablets, once daily for a continuous 28-day cycle up to maximum of 252 days.

Group Type EXPERIMENTAL

Futibatinib

Intervention Type DRUG

Futibatinib 20mg once daily on a 28-day cycle

Futibatinib Plus Fulvestrant (Cohort 4)

Participants with advanced or metastatic HR+ HER2- breast cancer, harboring FGFR1 gene amplification, with measurable disease, received futibatinib, 20 mg, oral tablets, once daily for a continuous 28-day cycle up to maximum of 645 days. They also received intramuscular (IM) fulvestrant 500 mg on Days 1 and 15 of Cycle 1 and Day 1 of every subsequent cycle up to maximum of 618 days.

Group Type EXPERIMENTAL

Futibatinib plus Fulvestrant

Intervention Type DRUG

Futibatinib 20mg once daily on a 28-day cycle and fulvestrant 500 mg administered intramuscularly (IM) on Days 1 and 15 of Cycle 1, then on Day 1 of Cycle 2 and beyond on a 28-day cycle.

Interventions

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Futibatinib

Futibatinib 20mg once daily on a 28-day cycle

Intervention Type DRUG

Futibatinib plus Fulvestrant

Futibatinib 20mg once daily on a 28-day cycle and fulvestrant 500 mg administered intramuscularly (IM) on Days 1 and 15 of Cycle 1, then on Day 1 of Cycle 2 and beyond on a 28-day cycle.

Intervention Type DRUG

Other Intervention Names

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TAS-120

Eligibility Criteria

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Inclusion Criteria

1. Provide written informed consent
2. Age ≥ 18 years of age
3. Histologically or cytologically confirmed recurrent locally advanced or metastatic breast cancer not amenable to treatment with curative intent, and the following cohort specific criteria:

A. Cohort 1
* HR+ HER2- breast cancer harboring an FGFR2 gene amplification.
* Measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1
* Has received 1-3 prior endocrine-containing therapies and up to 2 prior chemotherapy regimens for advanced/metastatic disease
* Has received prior treatment with a CDK4/6 inhibitor or is ineligible for such treatment

B. Cohort 2
* TNBC harboring an FGFR2 gene amplification
* Measurable disease per RECIST 1.1
* Has received at least 1 prior chemotherapy or chemotherapy/immunotherapy (PD-L1/PD-1 inhibitors) regimen for advanced/metastatic disease

C. Cohort 3
* TNBC or HR+ HER2- breast cancer harboring an FGFR2 gene amplification
* Non measurable, evaluable disease per RECIST 1.1. Patients with bone-only disease must have lytic or mixed lytic-blastic lesions
* Other criteria for either HR+ HER2- breast cancer or TNBC should be met as described for Cohort 1 and 2, respectively

D. Cohort 4
* HR+ HER2- breast cancer harboring an FGFR1 high-level gene amplification
* Measurable disease per RECIST 1.1
* Has received 1-2 prior endocrine-containing therapies and no more than 1 prior chemotherapy regimen for advanced/metastatic disease. Prior treatment with fulvestrant is not permitted.
* Has received prior treatment with a CDK4/6 inhibitor or is ineligible for such treatment
* Pre/peri-menopausal patients must be on goserelin
4. Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1
5. Archival or (preferably) fresh tumor tissue must be available
6. Adequate organ function

Exclusion Criteria

1. History and/or current evidence of any of the following disorders:

1. Non-tumor related alteration of the calcium-phosphorus homeostasis that is considered clinically significant
2. Ectopic mineralization/calcification, including but not limited to soft tissue, kidneys, intestine, or myocardia and lung, considered clinically significant
3. Retinal or corneal disorder confirmed by retinal/corneal examination and considered clinically significant
2. Prior treatment with an FGFR inhibitor
3. A serious illness or medical condition(s)
4. Brain metastases that are untreated or clinically or radiologically unstable
5. Pregnant or lactating female
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Taiho Oncology, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Mayo Clinic - AZ

Phoenix, Arizona, United States

Site Status

USCF

San Francisco, California, United States

Site Status

Florida Cancer Specialists

Fort Myers, Florida, United States

Site Status

Mayo Clinic - FL

Jacksonville, Florida, United States

Site Status

Florida Cancer Specialists

St. Petersburg, Florida, United States

Site Status

Florida Cancer Specialists

Tallahassee, Florida, United States

Site Status

Moffitt Cancer Center

Tampa, Florida, United States

Site Status

Florida Cancer Specialists

West Palm Beach, Florida, United States

Site Status

Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status

BIDMC

Boston, Massachusetts, United States

Site Status

Dana Farber Cancer Institute

Boston, Massachusetts, United States

Site Status

Mayo Clinic - MN

Rochester, Minnesota, United States

Site Status

HCA Midwest Health

Kansas City, Missouri, United States

Site Status

Tennessee Oncology

Chattanooga, Tennessee, United States

Site Status

Tennessee Oncology

Nashville, Tennessee, United States

Site Status

UT Southwestern

Dallas, Texas, United States

Site Status

MD Anderson

Houston, Texas, United States

Site Status

Tom Baker Cancer Center

Calgary, , Canada

Site Status

SunnyBrook Health Sciences

Toronto, , Canada

Site Status

Institut Gustave Roussy

Villejuif, Cedex, France

Site Status

Centre Leon Berard

Lyon, , France

Site Status

AOU Policlinico - Vittorio Emanuele

Catania, , Italy

Site Status

Istituto Europeo Di Oncologia - IEO

Milan, , Italy

Site Status

AOU Modena Policlinico

Modena, , Italy

Site Status

Ospedale E. Agnelli

Pinerolo, , Italy

Site Status

Azienda Ospedaliero Universitaria Pisana

Pisa, , Italy

Site Status

Istituto Nazionale Tumori Regina Elena

Roma, , Italy

Site Status

Fondazione Policlinico Universitario Agostino Gemelli IRCCS

Roma, , Italy

Site Status

Centro Hospitalar Universitario Lisboa Norte

Lisbon, , Portugal

Site Status

Porto University

Porto, , Portugal

Site Status

Instituto Portugues de Oncologia do Porto

Porto, , Portugal

Site Status

Vall d'Hebron

Barcelona, , Spain

Site Status

University Gregorio Marañon

Madrid, , Spain

Site Status

START Madrid - CIOCC

Madrid, , Spain

Site Status

HCA Healthcare UK

London, England, United Kingdom

Site Status

The Christie NHS Foundation Trust

Manchester, England, United Kingdom

Site Status

The Royal Marsden NHS Foundation Trust

Sutton, England, United Kingdom

Site Status

Countries

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United States Canada France Italy Portugal Spain United Kingdom

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Other Identifiers

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2019-001164-30

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

FOENIX-MBC2 TAS-120-201

Identifier Type: -

Identifier Source: org_study_id