Abstract
Pancreatic cancer is a highly aggressive disease with rapid invasion and early encasement of blood vessels. Hence, levels of circulating nucleic acids and tumor-associated mutations in them may have clinical importance. We analyzed the levels of circulating tumor DNA and oncogenic k-ras mutation in plasma of patients with pancreatic cancer and correlated their levels with survival and clinicopathological parameters. Higher levels of plasma DNA (>62 ng/mL) was found to associate significantly with lower overall survival time (p = .002), presence of vascular encasement (p = .030) and metastasis (p = .001). However, k-ras mutation status did not correlate with any of the clinicopathological parameters or survival. We conclude that circulating DNA in plasma can be an important predictor of prognosis in pancreatic cancer.
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