The inhibition of cyclin-dependent kinase 4 (CDK4) and CDK6 is a useful strategy to treat hormone receptor (HR)+/HER2+ breast cancer, but patients may develop resistance through different mechanisms. As reported at the recent San Antonio Breast Cancer Symposium, researchers from Biotheryx Inc. have synthesized a new CDK4/6 degrader – BTX-9341 – to address the problem of therapeutic resistance in breast cancer.
Cyclin-dependent kinase 4 and 6 (CDK4 and CDK6) are validated targets for the treatment of ER+/HER2- breast cancer, but resistance to therapy is still a problem in these patients, with >20% of them developing intrinsic resistance and up to 70% developing acquired resistance within 3 years.
