Evidence map›Paper›PMID 26074698›Full record

ArticleWorld journal of gastroenterology2015

Pancreatic cancer serum biomarker PC-594: Diagnostic performance and comparison to CA19-9.

Shawn A Ritchie, Bassirou Chitou, Qingan Zheng, Dushmanthi Jayasinghe, Wei Jin, Asuka Mochizuki, Dayan B Goodenowe

Abstract readComparative Study
In one paragraph

Article in World journal of gastroenterology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. The Use of Biomarkers in Early Diagnostics of Pancreatic Cancer.Canadian journal of gastroenterology & hepatology · 2018
    Review
  8. Article
  9. Article
  10. Review
  11. Evaluating Ultra-long-Chain Fatty Acids as Biomarkers of Colorectal Cancer Risk.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2016
    Article
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

7 authors.

Shawn A RitchieShawn A Ritchie, Bassirou Chitou, Dushmanthi Jayasinghe, Department of Biomarker Discovery and Validation, Phenomenome Discoveries, Saskatoon, SK S7N 4L8, Canada.
Bassirou ChitouShawn A Ritchie, Bassirou Chitou, Dushmanthi Jayasinghe, Department of Biomarker Discovery and Validation, Phenomenome Discoveries, Saskatoon, SK S7N 4L8, Canada.
Qingan ZhengShawn A Ritchie, Bassirou Chitou, Dushmanthi Jayasinghe, Department of Biomarker Discovery and Validation, Phenomenome Discoveries, Saskatoon, SK S7N 4L8, Canada.
Dushmanthi JayasingheShawn A Ritchie, Bassirou Chitou, Dushmanthi Jayasinghe, Department of Biomarker Discovery and Validation, Phenomenome Discoveries, Saskatoon, SK S7N 4L8, Canada.
Wei JinShawn A Ritchie, Bassirou Chitou, Dushmanthi Jayasinghe, Department of Biomarker Discovery and Validation, Phenomenome Discoveries, Saskatoon, SK S7N 4L8, Canada.
Asuka MochizukiShawn A Ritchie, Bassirou Chitou, Dushmanthi Jayasinghe, Department of Biomarker Discovery and Validation, Phenomenome Discoveries, Saskatoon, SK S7N 4L8, Canada.
Dayan B GoodenoweShawn A Ritchie, Bassirou Chitou, Dushmanthi Jayasinghe, Department of Biomarker Discovery and Validation, Phenomenome Discoveries, Saskatoon, SK S7N 4L8, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo investigate serum PC-594 fatty acid levels as a potential biomarker in North American pancreatic cancer (PaC) patients, and to compare its performance to CA19-9.

methodsUsing tandem mass spectrometry, we evaluated serum PC-594 levels from 84 North American patients with confirmed PaC and 99 cancer-free control subjects. We determined CA19-9 levels by ELISA. Significance between PaC patients and controls, and association with clinical variables was determined by analysis of variance and t-tests. Diagnostic performance was evaluated by receiver-operator characteristic (ROC) curve analysis, and PC-594 correlation with age and CA19-9 determined by regression analysis.

resultsMean PC-594 levels were 3.7 times lower in PaC patients compared to controls (P < 0.0001). The mean level in PaC patient serum was 0.76 ± 0.07 μmol/L, and the mean level in control subjects was 2.79 ± 0.15 μmol/L. There was no correlation between PC-594 and age, disease stage or gender (P > 0.05). Using 1.25 μmol/L as a PC-594 threshold produced a relative risk (RR) of 9.4 (P < 0.0001, 95%CI: 5.0-17.7). The area under the receiver-operator characteristic curve (ROC-AUC) was 0.93 (95%CI: 0.91-0.95) for PC-594 and 0.85 (95%CI: 0.82-0.88) for CA19-9. Sensitivity at 90% specificity was 87% for PC-594 and 71% for CA19-9. Six PaC patients with CA19-9 above 35 U/mL showed normal PC-594 levels, while 24 PaC patients with normal CA19-9 showed low PC-594 levels. Eighty-five of the 99 control subjects (86%) showed normal levels of both markers.

conclusionPC-594 biomarker levels are significantly reduced in North American PaC patients, and showed superior diagnostic performance compared to CA19-9.

Indexed as

AdultAgedAged, 80 and overArea Under CurveCA-19-9 AntigenDown-RegulationEnzyme-Linked Immunosorbent AssayFatty Acids, UnsaturatedFemaleHumansMaleMiddle AgedNorth AmericaPancreatic NeoplasmsPredictive Value of TestsRetrospective StudiesCA-19-9 AntigenFatty Acids, UnsaturatedPC-594 fatty acidBiomarkerBloodFatty acidMetabolitePancreatic cancerPC-594RiskScreening

Identifiers

PMID26074698
PMCPMC4458770

What OpenQuestion holds

Textmetadata
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.