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Title: Urinary Volatile Organic Compound Testing in Fast-Track Patients with Suspected Colorectal Cancer
Authors: Boulind, CE
Gould, O
Costello, BDL
Allison, J
White, P
Ewings, P
Wicaksono, AN
Curtis, NJ
Pullyblank, A
Jayne, D
Covington, JA
Ratcliffe, N
Turner, C
Francis, NK
Keywords: volatile organic compounds;colorectal cancer;fast track
Issue Date: 24-Apr-2022
Publisher: MDPI AG
Citation: Boulind, C.E. et al. (2022) 'Urinary Volatile Organic Compound Testing in Fast-Track Patients with Suspected Colorectal Cancer', Cancers, 14 (9), 2127, pp. 1-12. doi: 10.3390/cancers14092127.
Abstract: Copyright: © 2022 by the authors. Colorectal symptoms are common but only infrequently represent serious pathology, including colorectal cancer (CRC). A large number of invasive tests are presently performed for reassurance. We investigated the feasibility of urinary volatile organic compound (VOC) testing as a potential triage tool in patients fast-tracked for assessment for possible CRC. A prospective, multicenter, observational feasibility study was performed across three sites. Patients referred to NHS fast-track pathways for potential CRC provided a urine sample that underwent Gas Chromatography-Mass Spectrometry (GC-MS), Field Asymmetric Ion Mobility Spectrometry (FAIMS), and Selected Ion Flow Tube Mass Spectrometry (SIFT-MS) analysis. Patients underwent colonoscopy and/or CT colonography and were grouped as either CRC, adenomatous polyp(s), or controls to explore the diagnostic accuracy of VOC output data supported by an artificial neural network (ANN) model. 558 patients participated with 23 (4%) CRC diagnosed. 59% of colonoscopies and 86% of CT colonographies showed no abnormalities. Urinary VOC testing was feasible, acceptable to patients, and applicable within the clinical fast track pathway. GC-MS showed the highest clinical utility for CRC and polyp detection vs. controls (sensitivity = 0.878, specificity = 0.882, AUROC = 0.896) but it is labour intensive. Urinary VOC testing and analysis are feasible within NHS fast-track CRC pathways. Clinically meaningful differences between patients with cancer, polyps, or no pathology were identified suggesting VOC analysis may have future utility as a triage tool.
Description: Data Availability Statement: Deidentified VOC output could be shared (with no end date) subject to the approval of a proposal and completion of a data-sharing agreement and/or ethical approval.
Other Identifiers: 2127
Appears in Collections:Dept of Life Sciences Research Papers

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