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Postoperative metastasis prediction based on portal vein circulating tumor cells detected by flow cytometry in periampullary or pancreatic cancer

Authors Tao L, Su L, Yuan C, Ma Z, Zhang L, Bo S, Niu Y, Lu S, Xiu D

Received 28 March 2019

Accepted for publication 20 June 2019

Published 6 August 2019 Volume 2019:11 Pages 7405—7425


Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Cristina Weinberg

Peer reviewer comments 2

Editor who approved publication: Dr Antonella D'Anneo

Lianyuan Tao,1,2 Li Su,3 Chunhui Yuan,1 Zhaolai Ma,1 Lingfu Zhang,1 Shiping Bo,4 Yunyun Niu,4 Sijia Lu,4 Dianrong Xiu1

1Department of General Surgery, Peking University Third Hospital, Beijing 100191, People’s Republic of China; 2Department of Hepatobiliary Surgery, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, People’s Republic of China; 3Medical and Health Analytical Center, Peking University Health Science Center, Beijing 100191, People’s Republic of China; 4Department of Clinical Research, Yikon Genomics Co. Ltd., Shanghai, People’s Republic of China

Purpose: The aim of this study was to evaluate the value of flow cytometry (FCM) detection of portal vein circulating tumor cells (CTCs) in predicting postoperative metastasis.
Methods: Samples of portal venous blood and peripheral blood were collected from 39 patients during surgery, and CTCs were detected by FCM, with confirmation by laser confocal microscopy and single-cell sequencing.
Results: Among all patients, a portal EpCAM+CD45- percentage ≥24.5×10−4 (P=0.06), peripheral EpCAM+CD45- count ≥97/5 mL (P=0.034), peripheral EpCAM+CD45- percentage ≥4.4×10−4 (P=0.042), and CA242≥3.5 U/mL (P=0.027) were significant predictors of metastasis. Further analysis showed that the portal EpCAM+CD45- ratio ≥24.5×10−4 is a predictor of metastasis (P=0.025) in pancreatic cancer after curative resection.
Conclusion: CTCs detected by FCM in portal venous blood are of significant value for the prediction of postoperative metastasis in pancreatic or periampullary tumors.

Keywords: circulating tumor cells, flow cytometry, portal vein, pancreatic cancer, metastases

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