Researchers from Chimerix, now part of Jazz Pharmaceuticals, presented preclinical data on ONC-206, a compound that functions as both an agonist of the mitochondrial protease Caseinolytic peptidase P (CLPP) and an antagonist of the G protein-coupled receptor DRD2, in models of triple-negative breast cancer (TNBC).

Although hormone receptor-positive (HR+) breast cancer accounts for over 70% of cases, 20%-30% of patients still experience relapse despite endocrine therapies such as tamoxifen. Recurrence is also observed in HER2+ breast cancer, even with HER2-targeted antibodies and antibody-drug conjugates (ADCs), the use of which can be limited by adverse effects such as interstitial lung disease.