RecruitingPhase 1Drug trialFirst-in-human Study of IDRX-42 in Participants With Metastatic and/or Unresectable Gastrointestinal Stromal TumorsThis is the first clinical trial of IDRX-42. The study is designed to evaluate the safety, tolerability, PK, and preliminary antitumor activity of IDRX-42 in adult participants with advanced (metastatic and/or surgically unresectable) GIST.