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)
The goal of this study is to evaluate the study drug velzatinib (GSK6042981 / IDRX-42) to see whether velzatinib can shrink or control tumors and is safe and tolerated in Japan participants with gastrointestinal tumors (GIST) who progressed or were intolerant to standard therapies.
• 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.