Circulating and Disseminated Tumor Cells in Pancreatic Cancer and Their Role in Patient Prognosis: a Systematic Review and Meta-analysis

Overview

Journal Oncotarget

Specialty Oncology

Date 2018 Jan 2

PMID 29291024

Citations 18

Authors

David Stephenson

Christopher Nahm

Terence Chua

Anthony Gill

Anubhav Mittal

Philip de Reuver

Jaswinder Samra

Affiliations

Soon will be listed here.

Abstract

Background: Disseminated tumor cells (DTCs) and circulating tumor cells (CTCs) have been postulated to seed metastases and contribute to poorer patient outcomes in many types of solid cancer. To date, no systematic reviews have examined the role of both DTCs and CTCs in pancreatic cancer. We aimed to determine the prognostic value of DTCs/CTCs in pancreatic cancer using a systematic review and meta-analysis.

Materials And Methods: A comprehensive literature search identified studies examining DTCs and CTCs in the bone marrow and blood of pancreatic cancer patients at diagnosis with follow-up to determine disease-free/progression-free survival (DFS/PFS) and overall survival (OS). Statistical analyses were performed to determine the hazard ratio (HR) of DTCs/CTCs on DFS/PFS and OS.

Results: The literature search identified 16 articles meeting the inclusion criteria. The meta-analysis demonstrated statistically significant HR differences in DFS/PFS (HR = 1.93, 95% CI 1.19-3.11, = 0.007) and OS (HR = 1.84, 95% CI 1.37-2.45, =< 0.0001), indicating patients with detectable DTCs/CTCs at diagnosis have worse prognoses. Subgroup analyses suggested CTCs in the peripheral blood (HR =2.03) were more indicative of poor OS prognosis than DTCs in the bone marrow (HR = 1.91), although the difference between these was not statistically significant. Positivity of the CellSearch detection method for DTC/CTC had the highest correlation with decreased OS (HR = 2.79) while immunodetection (HR = 1.91) and RT-PCR (HR = 1.25) were less effective in determining prognosis.

Conclusion: The detection of DTCs/CTCs at diagnosis is associated with poorer DFS/PFS and OS in pancreatic cancer.

Citing Articles

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Comparison of sample preparation methods for rare cell isolation in microfluidic devices.

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