Boundless Bio (NASDAQ:BOLD), a clinical-stage oncology company interrogating extrachromosomal DNA (ecDNA) biology to deliver transformative therapies to patients with previously intractable oncogene amplified cancers, presents preclinical data supporting its lead ecDNA-directed therapy (ecDTx), BBI-940, at the American Association for Cancer Research (AACR) Annual Meeting 2026. Boundless has identified a novel kinesin target ("Kinesin") essential to ecDNA segregation and inheritance in cancer cells, but non-essential in healthy cells. BBI-940, a potentially first-in-class, oral, and selective Kinesin degrader, is currently being evaluated in the Phase 1 KOMODO-1 trial (NCT07408089) in patients with advanced or metastatic ER+/HER2- breast cancer and TNBC-LAR.