Task: Answer Verification
Input (English): Question: Is serum CA 19-9 response to neoadjuvant therapy associated with outcome in pancreatic adenocarcinoma?
Answer: CA 19-9 response to neoadjuvant therapy is associated with R0 resection rate, histopathologic response, and survival. Incorporation of this easily obtainable biomarker into future clinical trials may facilitate more rapid evaluation of novel regimens.
Output (English): yes