Study to Evaluate Discontinuation and Re-Treatment in Participants With Tenosynovial Giant Cell Tumor (TGCT) Previously Treated With Pexidartinib (PLX3397)

December 11, 2024 updated by: Daiichi Sankyo

A Phase 4, Multicenter Study to Evaluate Discontinuation and Re-Treatment in Subjects With Tenosynovial Giant Cell Tumor (TGCT) Previously Treated With Pexidartinib

This study is designed to evaluate the discontinuation/re-treatment of pexidartinib therapy in previously treated participants with tenosynovial giant cell tumor (TGCT).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This multicenter study in previously pexidartinib-treated participants with TGCT will provide the Investigators and participants the option at Screening to either continue pexidartinib treatment (Treatment Continuation Cohort) or discontinue treatment with the possibility of re-initiating pexidartinib treatment (Treatment-Free/Re-Treatment Cohort).

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
32

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Australia
    • New South Wales
      • Camperdown, New South Wales, Australia, 2050
        • Chris O'Brien Lifehouse
    • Victoria
      • East Melbourne, Victoria, Australia, 3000
        • Peter MacCallum Cancer Centre
  • Hungary
      • Budapest, Hungary, H-1062
        • Magyar Honvedseg Egeszsegugyi Kozpont
  • Italy
      • Bologna, Italy, 40136
        • Rizzoli-Istituto Ortopedico Rizzoli
      • Milano, Italy, 20133
        • Fondazione IRCC Istituto Nazionale dei Tumori
  • Netherlands
      • Leiden, Netherlands, 2333 ZA
        • Leiden University Medical Center (LUMC)
  • Spain
      • Barcelona, Spain, 08041
        • Hospital Sant Pau
      • Sevilla, Spain, 41013
        • Hospital Virgen Del Rocio
  • Taiwan
      • Taipei, Taiwan
        • National Taiwan University Hospital
  • United States
    • Arizona
      • Scottsdale, Arizona, United States, 85258
        • Honor Health
    • California
      • Los Angeles, California, United States, 90033
        • USC Norris Comprehensive Cancer Center
    • Florida
      • Miami, Florida, United States, 33136
        • Sylvester Comprehensive Cancer Center
    • Massachusetts
      • Boston, Massachusetts, United States, 02215
        • Dana-Farber Cancer Institute
    • Missouri
      • Saint Louis, Missouri, United States, 63110
        • Washington University
    • New York
      • New York, New York, United States, 10065
        • Memorial Sloan Kettering Cancer Center
    • Oregon
      • Portland, Oregon, United States, 97239
        • Oregon Health & Science University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Currently enrolled and on pexidartinib treatment in one of the following studies: Study PLX108-10 (ENLIVEN), Study PLX108-01, Study PL3397-A-A103 or Study PL3397-A-U126.
  • Willing and able to complete the PROMIS Physical Function Scale and EQ-5D-5L throughout the study.
  • Willing and able to provide written informed consent prior to any study-related procedures and to comply with all study requirements.
  • Females of reproductive potential must have a negative urine pregnancy test at Screening/Baseline (to be confirmed by a serum pregnancy test taken on the last treatment visit of their prior study). They are advised to use an effective, non-hormonal method of contraception during treatment with pexidartinib and for 1 month after the last dose. Males with female partners of reproductive potential should be advised to use an effective method of contraception during treatment with pexidartinib and for 1 month after the last dose. Female partners of male patients should concurrently use effective contraceptive methods (hormonal or non-hormonal).

Note: A female is considered of reproductive potential following menarche and until becoming postmenopausal (no menstrual period for a minimum of 12 months) unless permanently sterile (undergone a hysterectomy, bilateral salpingectomy or bilateral oophorectomy) with a confirmed by follicle stimulating hormone (FSH) test level >40 mIU/mL.

  • Male participants must not freeze or donate sperm starting at Screening and throughout the study period, and for at least 5 half-lives or 1 month after the final study drug administration, whichever is longer. Female participants must not donate, or retrieve for their own use, ova from the time of Screening and throughout the study treatment period, and for at least 1 month or 5 half-lives after the final study drug administration, whichever is longer.

Exclusion Criteria:

  • Participant has a clinically significant abnormality identified by the Investigator at Screening on physical examination, laboratory tests, or electrocardiogram (ECG) which, in the judgement of the Investigator, would preclude the participant's safe completion of the study.
  • Exposure to another investigational drug or current participation in other therapeutic investigational procedures, besides pexidartinib studies, within 1 month prior to start of study treatment. Any known contraindication to treatment with, including hypersensitivity to, the study drug(s) or excipients in pexidartinib.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Treatment Continuation Cohort
Previously-treated participants with TGCT continuing their current dose of pexidartinib treatment.
Drug: Pexidartinib
200 mg capsules administered orally twice daily on an empty stomach (at least 1 hour before or at least 2 hours after a meal or snack)
Other Names:
  • TURALIO™️
  • PLX3397
Experimental: Treatment-Free/Re-Treatment Cohort
Previously-treated participants with TGCT who discontinue pexidartinib treatment (Treatment-Free Period) and had the option to resume pexidartinib treatment at dose at completion of prior study (Re-Treatment Period).
Drug: Pexidartinib
200 mg capsules administered orally twice daily on an empty stomach (at least 1 hour before or at least 2 hours after a meal or snack)
Other Names:
  • TURALIO™️
  • PLX3397

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Treatment-Free Participants at 12 Months In The Treatment-free/Re-treatment Cohort
Time Frame: Baseline up to 12 months after last participant enrolled in Cohort
Participants who were not remaining treatment-free were defined as either participants who resumed pexidartinib treatment, death (any cause) or who were receiving systemic therapy or undergoing surgery for the treatment of TGCT, whichever occurs first. The number of participants who remained treatment-free at Month 12 is reported.
Baseline up to 12 months after last participant enrolled in Cohort
Number of Treatment-Free Participants at 24 Months In The Treatment-free/Re-treatment Cohort
Time Frame: Baseline up to 24 months after last participant enrolled in Cohort
Participants who were not remaining treatment-free were defined as either participants who resumed pexidartinib treatment, death (any cause) or who were receiving systemic therapy or undergoing surgery for the treatment of TGCT, whichever occurs first. The number of participants who remained treatment-free at Month 24 is reported.
Baseline up to 24 months after last participant enrolled in Cohort

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change From Baseline in PROMIS Physical Function Total Overall Score In The Treatment Continuation and Treatment-free/Re-Treatment Cohorts
Time Frame: Baseline up to Month 24
The PROMIS Physical Function Total Overall Score (includes 11 upper extremity questions and 13 lower extremity questions) ranges from 24 to 120, with each individual question being rated on a 5-point rating scale (where 1 is unable to do and 5 is without any difficulty). Higher PROMIS Physical Function Total Overall Scores indicate a better health state. The change from baseline in PROMIS Physical Function Total Overall Scores is being reported.
Baseline up to Month 24
Change From Baseline in EQ-5D-5L Scale Score In The Treatment Continuation and Treatment-free/Re-Treatment Cohorts
Time Frame: Baseline up to Month 24
The EQ-5D-5L questionnaire assessed a participant's mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. The overall health is rated on a scale from 0 to 100, where 0 is worst health you can imagine and 100 is best health you can imagine. The change from baseline in EQ-5D-5L Scale Score is being reported.
Baseline up to Month 24
Number of Participants With and Without Progressive Disease
Time Frame: Month 18 (Re-treatment Period of the Treatment-free/Re-treatment Cohort), Month 24 (Treatment Continuation Cohort)
Tumors were assessed based on the RECIST criteria. CR was defined as a disappearance of all target lesions, PR was defined as at least a 30% decrease in the sum of diameters of target lesions, and stable disease (SD) was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease (PD; ≥30% increase in volume relative to lowest score during the study whether at baseline or some other visit.
Month 18 (Re-treatment Period of the Treatment-free/Re-treatment Cohort), Month 24 (Treatment Continuation Cohort)
Number of Participants Who Reported Treatment-Emergent Adverse Events (TEAEs) In The Treatment Continuation Cohort
Time Frame: Baseline up to 30 days after the start of re-treatment or end of study (whichever occurs first), up to 24 months
Treatment-emergent adverse events (TEAEs) were defined as new adverse events (AEs) or pre-existing conditions that worsen in CTCAE grade after the first dose of study drug and up to 30 days after last dose of study drug.
Baseline up to 30 days after the start of re-treatment or end of study (whichever occurs first), up to 24 months
Number of Participants Who Reported Treatment-Emergent Adverse Events (TEAEs) In The Re-Treatment Period of the Treatment-free/Re-Treatment Cohort
Time Frame: Baseline up to 30 days after the start of re-treatment or end of study (whichever occurs first), up to 24 months
Treatment-emergent adverse events (TEAEs) were defined as new adverse events (AEs) or pre-existing conditions that worsen in CTCAE grade after the first dose of study drug and up to 30 days after last dose of study drug.
Baseline up to 30 days after the start of re-treatment or end of study (whichever occurs first), up to 24 months
Number of Patients Reporting AEs (Treatment-free)
Time Frame: Baseline up to 30 days after the start of re-treatment or end of study (whichever occurs first), up to 24 months
Adverse events (AEs) were defined as any untoward medical occurrence in a participant who was administered a pharmaceutical product and that does not necessarily have to have a causal relationship with this treatment. Participants who were not remaining treatment-free were defined as either participants who resumed pexidartinib treatment, death (any cause) or who were receiving systemic therapy or undergoing surgery for the treatment of TGCT, whichever occurs first.
Baseline up to 30 days after the start of re-treatment or end of study (whichever occurs first), up to 24 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Daiichi Sankyo

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Clinical Team Leader, Daiichi Sankyo

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 20, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 7, 2023

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 7, 2023

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 21, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 24, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 26, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 25, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 11, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • PL3397-A-U4003
  • 2020-000192-20 (EudraCT Number)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

De-identified individual participant data (IPD) and applicable supporting clinical trial documents may be available upon request at https://vivli.org/. In cases where clinical trial data and supporting documents are provided pursuant to our company policies and procedures, Daiichi Sankyo will continue to protect the privacy of our clinical trial participants. Details on data sharing criteria and the procedure for requesting access can be found at this web address: https://vivli.org/ourmember/daiichi-sankyo/

IPD Sharing Time Frame

Studies for which the medicine and indication have received European Union (EU) and United States (US), and/or Japan (JP) marketing approval on or after 01 January 2014 or by the US or EU or JP Health Authorities when regulatory submissions in all regions are not planned and after the primary study results have been accepted for publication.

IPD Sharing Access Criteria

Formal request from qualified scientific and medical researchers on IPD and clinical study documents from clinical trials supporting products submitted and licensed in the United States, the European Union and/or Japan from 01 January 2014 and beyond for the purpose of conducting legitimate research. This must be consistent with the principle of safeguarding study participants' privacy and consistent with provision of informed consent.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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