Erythropoiesis-Stimulating Agents (ESAs) are prescribed to individuals who are anaemic, such as post renal (kidney) transplantation patients and patients on chemotherapies. The FDA has released a strengthened warning about dosing of ESAs. The drugs affected by the safety update are darbepoetin alfa (Aranesp) and epoetin alfa (Epogen and Procrit).
   The FDA and the manufacturer of these products have agreed on revised product labeling that includes updated warnings, a new boxed warning, and modifications to the dosing instructions. The new boxed warning advises physicians to monitor red blood cell levels (hemoglobin) and to adjust the ESA dose to maintain the lowest hemoglobin level needed to avoid the need for blood transfusions. Physicians and patients should carefully weigh the risks of ESAs against transfusion risks.
   Recently completed studies describe an increased risk of death, blood clots, strokes, and heart attacks in patients with chronic kidney failure when ESAs were given at higher than recommended doses. In other studies, more rapid tumor growth occurred in patients with head and neck cancer who received these higher doses.
Here is the FDA release on the strengthened warning for erythropoiesis-stimulating agents and anemia.
Here is a good brief historical and technical review of erythropoiesis-stimulating agents and anemia.


delicious
digg
newsvine
furl
google
yahoo
technorati
Here is a link to [URL="http://www.renalmd.org/downloads/RPA_Guidance_NephrologyCareProviders.pdf"]Renal Physicians Association (RPA) guideline for physicians[/URL]. It is the advisory for nephrologists so it may be a little technical.
Here is another link on the [URL="http://www.spiritindia.com/health-care-news-articles-7409.html"]story about the RPA guidance story[/URL].