Three years ago, Sarah, age 54, completed standard chemotherapy and radiation treatment for stage II, ER- and PR-positive, HER2-negative invasive breast cancer. A recent computed tomography scan, ordered to evaluate persistent hip pain, revealed bone lesions, and a biopsy and positron-emission tomography scan confirmed bone-only metastatic breast cancer. A CDK4/6 inhibitor, ribociclib, was added to the letrozole she was already taking.
Clinical trial results show that PD-1 inhibitors offer improved survival and a better safety profile compared to standard, single-agent chemotherapy for recurrent or metastatic squamous cell carcinoma of the head and neck. However, because of their mechanism of action as immunotherapy, patients receiving the agents may experience immune-related adverse events (irAEs).
One in nine men will be diagnosed with prostate cancer, the second leading cause of death in men in the United States. Survival varies greatly depending on the disease’s severity and extent at diagnosis: five-year survival rates are near 100% for local or regional disease, but they drop to 30% for metastatic prostate cancer.
Entrectinib was approved by the U.S. Food and Drug Administration in August 2019 as the third tumor-agnostic cancer drug, meaning it targets a specific mutation of the cancer, not the organ of origin. The other two currently approved tumor-agnostic drugs are larotrectinib and pembrolizumab.