The FDA has approved revised boxed warnings and other safety-related product labeling changes for erythropoiesis-stimulating agents (ESAs), which treat certain types of anemia. These new statements address the risks that the drugs Aranesp, Epogen and Procrit pose to patients with cancer and patients with chronic kidney failure. The labeling changes, which incorporate advice from FDA advisory committees and expand upon labeling changes made in March 2007, also include a statement that symptoms of anemia, fatigue and quality of life have not been shown to improve in patients with cancer who are treated with ESAs. Epogen, Procrit and Aranesp are approved to treat anemia in patients with chronic kidney failure and anemia caused by chemotherapy in certain patients with cancer. Epogen and Procrit are also approved for use in certain patients with anemia who are scheduled to undergo major surgery to reduce blood transfusions during or shortly after surgery and for the treatment of anemia caused by zidovudine (AZT) therapy in HIV patients.