A Study of IDRX-42 (GSK6042981) Versus (vs) Sunitinib in Participants With Gastrointestinal Stromal Tumors After Imatinib Therapy

NCT ID: NCT07218926

Last Updated: 2025-12-23

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

450 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-12-03

Study Completion Date

2030-11-29

Brief Summary

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The purpose of this study is to find out if a new drug, called IDRX-42 (also known as GSK6042981), is effective in treating adults with a type of cancer called Gastrointestinal Stromal Tumors (GIST) when compared to another drug named sunitinib. The study will see if IDRX-42 works well and is safe for participants whose GIST has spread or cannot be surgically removed, and who have already taken the drug imatinib.

Detailed Description

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Conditions

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Gastrointestinal Neoplasms

Keywords

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GSK6042981 IDRX-42 Sunitinib Imatinib Gastrointestinal Stromal Tumors

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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IDRX-42 (GSK6042981)

Group Type EXPERIMENTAL

IDRX-42

Intervention Type DRUG

IDRX-42 will be administered.

Sunitinib

Group Type ACTIVE_COMPARATOR

Sunitinib

Intervention Type DRUG

Sunitinib will be administered.

Interventions

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IDRX-42

IDRX-42 will be administered.

Intervention Type DRUG

Sunitinib

Sunitinib will be administered.

Intervention Type DRUG

Other Intervention Names

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GSK6042981

Eligibility Criteria

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Inclusion Criteria

* Participants with histologically or cytologically confirmed GIST that is metastatic and/or surgically unresectable.
* Documented disease progression on or intolerance to imatinib administered for first-line treatment of unresectable/metastatic disease.
* Tumor tissue must be available to be submitted to the central laboratory for retrospective biomarker analysis. The sample may be from archival tissue or a new biopsy. Tissue samples are not required to be submitted centrally prior to randomization.

Exclusion Criteria

* Known untreated or active central nervous system metastases.
* Participants with a known allergy or hypersensitivity to any component of IDRX-42 (GSK6042981) or sunitinib. Participants with a history of Stevens-Johnson syndrome on a prior Tyrosine kinase inhibitor (TKI) are excluded.
* Has a malignancy (except disease under study) that has progressed or required active treatment within the past 24 months except for basal cell or squamous cell carcinomas of the skin or in-situ carcinomas \[e.g., breast, cervix, bladder\] that have been resected with no evidence of metastatic disease.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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GlaxoSmithKline

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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GSK Investigational Site

Omaha, Nebraska, United States

Site Status RECRUITING

GSK Investigational Site

Knoxville, Tennessee, United States

Site Status RECRUITING

GSK Investigational Site

Houston, Texas, United States

Site Status RECRUITING

GSK Investigational Site

Tacoma, Washington, United States

Site Status RECRUITING

GSK Investigational Site

Toronto, Ontario, Canada

Site Status RECRUITING

GSK Investigational Site

Fukuoka, , Japan

Site Status RECRUITING

GSK Investigational Site

Hokkaido, , Japan

Site Status RECRUITING

GSK Investigational Site

Kanagawa, , Japan

Site Status RECRUITING

GSK Investigational Site

Osaka, , Japan

Site Status RECRUITING

GSK Investigational Site

Tokyo, , Japan

Site Status RECRUITING

GSK Investigational Site

London, , United Kingdom

Site Status RECRUITING

Countries

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United States Canada Japan United Kingdom

Central Contacts

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US GSK Clinical Trials Call Center

Role: CONTACT

Phone: 877-379-3718

Email: [email protected]

EU GSK Clinical Trials Call Center

Role: CONTACT

Phone: +44 (0) 20 89904466

Email: [email protected]

Facility Contacts

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US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

Other Identifiers

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2025-522229-37-00

Identifier Type: CTIS

Identifier Source: secondary_id

300383

Identifier Type: -

Identifier Source: org_study_id