RecruitingPhase 1Drug trialStudy of the Kinesin Oral Molecular Degrader BBI-940 in Subjects With Advanced or Metastatic Breast CancerThis is a first-in-human, open-label, Phase 1 study evaluating BBI-940, an investigational kinesin oral molecular degrader, administered as monotherapy or in combination with fulvestrant in adults with advanced or metastatic breast cancer.