Clinical trial Recruiting at 3 sites Phase 2 Interventional Ages 18 and up

Velzatinib for advanced GIST after multiple prior TKIs

Official title: A Phase 2, Single-arm, Multicenter, Open-Label Study of Velzatinib (GSK6042981) in Participants With Metastatic and/or Unresectable Gastrointestinal Stromal Tumors (GIST) After Imatinib, Sunitinib, Regorafenib, and Pimitespib Therapies (StrateGIST J)

Run by GlaxoSmithKline · NCT07689201 · Data updated 2026-11-12

This study tests velzatinib to see if it can shrink or slow tumors in people with metastatic or unresectable GIST who have progressed on or could not tolerate standard therapies.

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment24 (estimated)
SponsorGlaxoSmithKline
Industry-sponsored
Drugs / interventionsimatinib, sunitinib, velzatinib, ripretinib
Locations3 sites (Fukuoka and 2 other locations)
StatusRecruiting
StartedAugust 17, 2026
Main results expectedNovember 29, 2027
Study endsAugust 17, 2029
Registry record updatedOctober 1, 2026
Trial IDNCT07689201 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with metastatic or unresectable GIST who progressed on or were intolerant to imatinib, sunitinib, regorafenib, and pimitespib, with confirmed KIT/PDGFRA mutations.

Probably not a fit

Patients without the relevant mutations or whose disease does not respond to velzatinib may not experience benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This phase 2 trial evaluates velzatinib (GSK6042981/IDRX-42) in Japanese participants with GI tumors, specifically GIST, who progressed after imatinib, sunitinib, regorafenib, and pimitespib. The study will assess tumor response and safety to determine if velzatinib can provide clinical benefit and be tolerated in this setting. Eligible participants must have confirmed GIST with documented KIT and/or PDGFRA mutations and may contribute tissue samples for biomarker analysis. Exclusion criteria include active CNS metastases, uncontrolled cardiovascular disease, or prior severe adverse reactions to TKIs. The trial is sponsored by GlaxoSmithKline and is conducted at GSK investigational sites in Fukuoka, Hokkaido, and Tokyo.

Why it matters

Potential benefit: If successful, velzatinib could offer a new option to control disease in patients with GIST who have exhausted standard therapies.

How similar studies have gone: TKI therapies have shown mixed results in resistant GIST, and velzatinib represents a novel agent with potential activity in this setting.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Histologically or cytologically confirmed GIST that is metastatic and/or surgically unresectable.
* Documented disease progression on or intolerance to imatinib, sunitinib, regorafenib, and pimitespib.
* Documented mutation status of KIT and/or PDGFRA.
* Tumor tissue may be available for retrospective biomarker analysis. The sample may be from archival tissue or a new biopsy. Investigators may consult with the sponsor regarding the enrolment of participants for whom archival tissue is no longer available and who are not eligible to undergo a new biopsy.
* Is willing to use adequate contraception male and/or female participants.

Exclusion Criteria:

* Known untreated or active central nervous system metastases.
* Has significant, uncontrolled, or active cardiovascular disease.
* Participants with a known allergy or hypersensitivity to any component of velzatinib. 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.
* Prior treatment with ripretinib or other investigational agents that are currently under clinical development for GIST.
* Is pregnant or breastfeeding.
* Any condition or illness that, in the opinion of the Investigator, might compromise participant safety or interfere with the evaluation of the safety of the study treatment.

Where it's running

  • GSK Investigational Site
    Fukuoka, Japan
    Recruiting
  • GSK Investigational Site
    Hokkaido, Japan
    Recruiting
  • GSK Investigational Site
    Tokyo, Japan
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.