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01-08-2008 | Gastrointestinal Oncology

Persistent Presence of Postoperative Circulating Tumor Cells is a Poor Prognostic Factor for Patients with Stage I–III Colorectal Cancer after Curative Resection

Authors: Yih-Huei Uen, MD, Chien-Yu Lu, MD, Hsiang-Lin Tsai, MD, Fang-Jung Yu, MD, Ming-Yii Huang, MD, Tian-Lu Cheng, PhD, Shiu-Ru Lin, PhD, Jaw-Yuan Wang, MD, PhD

Published in: Annals of Surgical Oncology | Issue 8/2008

Abstract

Aim

To detect pre- and postoperative circulating tumor cells (CTCs) in stage I–III colorectal cancer (CRC) patients undergoing curative resection and so identify a subgroup of patients who are at high risk for relapse.

Methods

Four mRNA molecular markers including human telomerase reverse transcriptase, cytokeratin-19, cytokeratin-20, and carcinoembryonic antigen mRNA were used to detect CTCs in 438 CRC patients underwent curative resection.

Results

Out of 438 patients, 80 CRC patients were classified to preoperative (−)/postoperative (−), 221 patients were preoperative (+)/postoperative (−), while 137 patients were preoperative (+)/postoperative (+). Univariately, postoperative relapse was significantly correlated with depth of invasion (P = 0.032), lymph node metastasis (P < 0.001), vascular invasion (P = 0.001), perineural invasion (P = 0.013), and persistent presence of CTCs (P < 0.001). Using a multivariate proportional hazards regression analysis, the presence of lymph node metastasis (P = 0.012; HR, 7.652; 95% CI: 4.162–14.827), vascular invasion (P = 0.033; HR, 4.360; 95% CI: 2.793–10.847), and the persistent presence of CTCs (P < 0.001; HR, 29.486; 95% CI: 10.281–87.792) were demonstrated to be independent predictors for postoperative relapse. Combination of these three independent predictors showed that patients with any one positive predictor had a hazard ratio of sevenfold to develop postoperative relapse (P < 0.001; HR, 7.064; 95% CI: 4.354–11.464). Furthermore, the persistent presence of CTCs was strongly correlated with poorer relapse-free survival rates (all P < 0.001).

Conclusion

The promising results of this study suggest that persistent presence of postoperative CTCs may be a crucial prognostic factor adjuvant to conventional tumor markers in CRC patients who have undergone curative resection. Identification of these high-risk patients of persistent CTCs positivity is important and thus could help to define patients for adjuvant therapy with this tumor entity.

http://www.doh.gov.tw/statistic/index.htm; last accessed: September 2007

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Title: Persistent Presence of Postoperative Circulating Tumor Cells is a Poor Prognostic Factor for Patients with Stage I–III Colorectal Cancer after Curative Resection
Authors: Yih-Huei Uen, MD
Chien-Yu Lu, MD
Hsiang-Lin Tsai, MD
Fang-Jung Yu, MD
Ming-Yii Huang, MD
Tian-Lu Cheng, PhD
Shiu-Ru Lin, PhD
Jaw-Yuan Wang, MD, PhD
Publication date: 01-08-2008
Publisher: Springer-Verlag
Published in: Annals of Surgical Oncology / Issue 8/2008
Print ISSN: 1068-9265
Electronic ISSN: 1534-4681
DOI: https://doi.org/10.1245/s10434-008-9961-7

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Persistent Presence of Postoperative Circulating Tumor Cells is a Poor Prognostic Factor for Patients with Stage I–III Colorectal Cancer after Curative Resection

Abstract

Aim

Methods

Results

Conclusion

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