system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Darbopoetin is most useful in treatment of anemia caused by ?
assistant
The correct answer is  Ans. is 'a' i.e., Chronic renal failure Darbepoetin is hyperglycosylated modified erythropoietin for the treatment of anemia of chronic renal failure which is due to low levels of erythropoietin (kidney is the major source of erythropoietin).