Task: Answer Verification
Input (English): Question: Is serum carbohydrate antigen 125 an independent prognostic factor in patients with chronic lymphocytic leukemia?
Answer: The results support a high CA-125 level correlates significantly with many clinical features of advanced stage, poor prognostic factors, and worse TFS and OS. However, CA-125 is not an independent prognostic factor in patients with CLL.
Output (English): no