Evidence map›Paper›PMID 29301511›Full record

ArticleBMC cancer2018

A quantitative multimodal metabolomic assay for colorectal cancer.

Farshad Farshidfar, Karen A Kopciuk, Robert Hilsden, S Elizabeth McGregor, Vera C Mazurak, W Donald Buie, Anthony MacLean, Hans J Vogel, Oliver F Bathe

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
1.9field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 2 syntheses or guidelines pooled it, 45 citations in OpenAlex.

  1. Colorectal neoplasia-specific amino acid profiles and their diagnostic potential: a systematic review.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 1 country.

Farshad FarshidfarDepartment of Surgery, University of Calgary, Calgary, AB, Canada.
Karen A KopciukDepartment Mathematics and Statistics, University of Calgary, Calgary, AB, Canada.
Robert HilsdenDepartment of Medicine, University of Calgary, Calgary, AB, Canada.
S Elizabeth McGregorDepartment of Oncology, University of Calgary, Calgary, AB, Canada.
Vera C MazurakDepartment of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada.
W Donald BuieDepartment of Surgery, University of Calgary, Calgary, AB, Canada.
Anthony MacLeanDepartment of Surgery, University of Calgary, Calgary, AB, Canada.
Hans J VogelDepartment of Biological Sciences, University of Calgary, Calgary, AB, Canada.
Oliver F BatheDepartment of Surgery, University of Calgary, Calgary, AB, Canada. bathe@ucalgary.ca.
University of Calgary · CAAlberta Health Services · CAAlberta Cancer Foundation · CAUniversity of Alberta · CA

Funding

Alberta Cancer Foundation 26079Alberta Cancer Foundation Armstrong Chair in Molecular Cancer Epidemiology Research
6 · The paper itself

Abstract

backgroundEarly diagnosis of colorectal cancer (CRC) simplifies treatment and improves treatment outcomes. We previously described a diagnostic metabolomic biomarker derived from semi-quantitative gas chromatography-mass spectrometry. Our objective was to determine whether a quantitative assay of additional metabolomic features, including parts of the lipidome could enhance diagnostic power; and whether there was an advantage to deriving a combined diagnostic signature with a broader metabolomic representation.

methodsThe well-characterized Biocrates P150 kit was used to quantify 163 metabolites in patients with CRC (N = 62), adenoma (N = 31), and age- and gender-matched disease-free controls (N = 81). Metabolites included in the analysis included phosphatidylcholines, sphingomyelins, acylcarnitines, and amino acids. Using a training set of 32 CRC and 21 disease-free controls, a multivariate metabolomic orthogonal partial least squares (OPLS) classifier was developed. An independent set of 28 CRC and 20 matched healthy controls was used for validation. Features characterizing 31 colorectal adenomas from their healthy matched controls were also explored, and a multivariate OPLS classifier for colorectal adenoma could be proposed.

resultsThe metabolomic profile that distinguished CRC from controls consisted of 48 metabolites (R

conclusionThe diagnostic power for metabolomic tests for colorectal neoplasia can be improved by utilizing a multimodal approach and combining metabolites from diverse chemical classes. In addition, quantification of metabolites enhances separation of disease-specific metabolomic profiles. Our future efforts will be focused on developing a quantitative assay for the metabolites comprising the optimal diagnostic biomarker.

Indexed as

MetabolomeMetabolomicsAdenomaAgedAmino AcidsBiomarkers, TumorCarnitineColorectal NeoplasmsEarly Detection of CancerFemaleHumansMaleMass SpectrometryMiddle AgedPhosphatidylcholinesSphingomyelinsacylcarnitineAmino AcidsBiomarkers, TumorCarnitinePhosphatidylcholinesSphingomyelinsCancer biomarkerColorectal adenocarcinomaColorectal adenomaColorectal cancerMass spectrometryMetabolomicsMetabolomics profiling

Identifiers

PMID29301511
PMCPMC5755335
OpenAlexW2782027781

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.