STX-478

Scorpion presented initial, first-in-human clinical results from its Phase 1/2 study of STX-478 in advanced solid tumor patients in a Proffered Paper late-breaking session at the European Society for Medical Oncology (ESMO) Congress 2024 in Barcelona, Spain. Initial Phase 1 monotherapy data for STX-478, an oral, once-daily, mutant-selective, allosteric PI3Kα inhibitor, demonstrated potentially best-in-class PI3Kα inhibition, with anti-tumor activity observed in multiple cancer types, including HR+/HER2- breast cancer (BC), gynecological tumors, and other solid tumors. STX-478 was well-tolerated, including in pre-diabetic, diabetic and heavily pre-treated patients and showed no significant wild-type-mediated toxicities.
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