
Hormone receptor-positive (HR+) breast cancer is the most common subtype of breast cancer, with approximately 40% of these patients harboring a PI3KCA mutation. This mutation is a primary cause of resistance to endocrine therapy and CDK4/6 inhibitors, leading to poorer prognosis for affected patients. At the 2024 CSCO Annual Meeting, Dr. Jiong Wu from Fudan University Shanghai Cancer Center, as the Leading PI, shared the latest findings from the Phase III INAVO120 study. The study demonstrated that the novel PI3K inhibitor, inavolisib, combined with CDK4/6 inhibitors and endocrine therapy, offers improved outcomes for these patients, providing a new treatment option. Based on these results, both the China National Medical Products Administration (CDE) and the U.S. FDA have granted fast-track review status to inavolisib, with hopes of delivering clinical benefits to patients soon. At the CSCO meeting, Oncology Frontier had the opportunity to interview Professor Wu, discussing key insights about inavolisib and providing clinical guidance on this emerging PI3K inhibitor.