Task: Answer Verification
Input (English): Question: Is cXCR4 expression on circulating pan-cytokeratin positive cells associated with survival in patients with advanced non-small cell lung cancer?
Answer: This study suggests that CXCR4 may be a prognostic marker in NSCLC, and provides hypothesis-generating results, which may be important in determining metastatic potential. In future studies, we will prospectively evaluate the prognostic significance of pan-cytokeratin/CXCR4+ cells, and determine the mechanisms involved in the regulation of CXCR4 expression on tumor cells in a larger patient population.
Output (English): yes