Task: Answer Verification
Input (English): Question: Do preoperative serum levels of c-erbB-2 seem to be useful in management of patients with rectal cancer?
Answer: Although preoperative serum c-erbB-2 levels were significantly higher in rectal cancer patients than in healthy controls, the soluble c-erbB-2 does not seem to be useful in the diagnosis of rectal cancer due to its low sensitivity. Preoperative serum levels of this oncoprotein were predictive neither for overall survival nor for local recurrence/distant metastases in rectal cancer patients.
Output (English): no