Implementing liquid biopsy in HR+/HER2- metastatic breast cancer: challenges and opportunities.
PURPOSE OF REVIEW Liquid biopsy (LB) is rapidly transforming the management of hormone receptor-positive/HER2-negative (HR+/HER2-) metastatic breast cancer (mBC). In this review, we discuss the most recent findings on circulating tumor DNA (ctDNA) and circulating tumor cells (CTCs), exploring their roles across the tre...