Jul 11, 2014

Detection of circulating tumor cells in patients with locally advanced rectal cancer undergoing neoadjuvant therapy followed by curative surgery

International Journal of Colorectal Disease
Elena MagniMaria G Zampino


Circulating tumor cells (CTCs) represent an independent prognostic factor in metastatic colorectal cancer, while their significance in early stages is still an open issue. The aim of the study is to investigate the role of CTCs in rectal cancer patients undergoing neoadjuvant chemoradiotherapy (CT-RT). In this prospective single institutional study, cT3-4 and/or N+ rectal cancer was treated with neoadjuvant CT-RT. The primary endpoints were as follows: evaluation of CTCs at baseline (t0), after CT-RT (t1), within 7 days after surgery (t2), and at 6 months from surgery (t3) and correlation with main patient/tumor characteristics, CEA, response to neoadjuvant therapy, and disease-free survival (DFS). CTCs were enumerated with the CellSearch System in 22.5 ml peripheral blood. A repeated measure analysis for binary outcome was used to evaluate over time changes in the percentage of CTCs detectable in blood samples. Of the 90 patients enrolled in this study, 85 were eligible consisting of 52 males and 33 females. Median age was 63 years and median follow-up was 38 months. CTCs were available for all patients at t0, for 67 at t1, for 68 at t2, and for 62 at t3. CTCs >0 were reported on 16 (19%) at t0, on 5 (7.5%) at t1, on 6 (9%) at...Continue Reading

  • References26
  • Citations8


  • References26
  • Citations8


Mentioned in this Paper

Neoplasm Recurrence, Local
Rectal Neoplasms
TNM Staging System
Peripheral Blood
Malignant Rectal Neoplasm
Survival Analysis
Embolism, Tumor
Colorectal Neoplasms
Cancer Remission
Circulating Tumor Cell Count

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