Evidence map›Paper›PMID 27657339›Full record

ArticleBritish journal of cancer2016

Identification of a novel serum biomarker for pancreatic cancer, C4b-binding protein α-chain (C4BPA) by quantitative proteomic analysis using tandem mass tags.

Kazuyuki Sogawa, Shigetsugu Takano, Fumie Iida, Mamoru Satoh, Sachio Tsuchida, Yusuke Kawashima, Hideyuki Yoshitomi, Akihiro Sanda, Yoshio Kodera, Hirotaka Takizawa and 6 more

Abstract readComparative StudyEvaluation Study
In one paragraph

Article in British journal of cancer, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing 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

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

  1. Pooled it
  2. Review
  3. Article
  4. Complement system in cancer: friend or foe of immunotherapy.Journal for immunotherapy of cancer · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Proteomics in pancreatic cancer.Biomarker research · 2025
    Review
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. Review
  16. Review
  17. Article
  18. Identification ofTranslational cancer research · 2024
    Article
  19. Review
  20. 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

16 authors.

Kazuyuki SogawaDepartment of Biochemistry, School of Life and Environmental Science, Azabu University, Kanagawa 252-0206, Japan.
Shigetsugu TakanoDepartment of General Surgery, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
Fumie IidaDepartment of Molecular Diagnosis, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
Mamoru SatohDepartment of Molecular Diagnosis, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
Sachio TsuchidaDepartment of Molecular Diagnosis, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
Yusuke KawashimaCenter for Disease Proteomics, School of Science, Kitasato University, Kanagawa 252-0373, Japan.
Hideyuki YoshitomiDepartment of General Surgery, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
Akihiro SandaDepartment of Biochemistry, School of Life and Environmental Science, Azabu University, Kanagawa 252-0206, Japan.
Yoshio KoderaCenter for Disease Proteomics, School of Science, Kitasato University, Kanagawa 252-0373, Japan.
Hirotaka TakizawaKashiwado Clinic in Port-Square, Kashiwado Memorial Foundation, Chiba 260-0025, Japan.
Rintaro MikataDepartment of Medicine and Clinical Oncology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
Masayuki OhtsukaDepartment of General Surgery, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
Hiroaki ShimizuDepartment of General Surgery, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
Masaru MiyazakiDepartment of General Surgery, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
Osamu YokosukaDepartment of Medicine and Clinical Oncology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
Fumio NomuraDivisions of Clinical Mass Spectrometry and Clinical Genetics, Chiba University Hospital, Chiba 260-8670, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPancreatic ductal adenocarcinoma (PDAC) remains a devastating disease due to the lack of specific early diagnostic markers. To improve the outcomes, proteomic approaches are being developed for the discovery of novel biomarkers of PDAC.

methodsUsing tandem mass tag labelling and LC-MS/MS, we performed comparative analyses of pre- and postoperative sera from PDAC patients to identify specific serum biomarkers for PDAC. In validation studies, we evaluated the discriminatory power of candidate proteins.

resultsAmong the 302 proteins analysed, 20 were identified as potential biomarkers, with C4b-binding protein α-chain (C4BPA) and polymeric immunoglobulin receptor (PIGR) being selected for further analysis. The sera levels of C4BPA and PIGR were significantly higher in the preoperative PDAC patients than in the postoperative ones (P<0.008, P<0.036, respectively). In addition, serum C4BPA levels, but not PIGR, in patients with PDAC were significantly higher than those in healthy controls as well as in patients with pancreatitis and other malignancies including biliary tract cancers (BTC) (P<0.001). The respective area under the receiver operator characteristics (ROC) curve (AUC) was 0.860 for C4BPA, 0.846 for CA19-9 and 0.930 for the combination of C4BPA and CA19-9 in PDAC vs non-cancer individuals. The respective AUC was 0.912 for C4BPA, 0.737 for CA19-9 in Stages I and II of PDAC, 0.854 for C4BPA and 0.264 for CA19-9 in PDAC vs BTC.

conclusionsWe have demonstrated that C4BPA is a novel serum biomarker for detecting early stage PDAC, as well as for distinguishing PDAC from other gastroenterological cancers. Further analysis in large cohort studies will warrant C4BPA as a promising biomarker of PDAC in clinical use.

Indexed as

Tandem Mass SpectrometryAdultAgedAged, 80 and overArea Under CurveBiomarkers, TumorCarcinoma, Pancreatic DuctalCase-Control StudiesComplement C4b-Binding ProteinDiagnosis, DifferentialDigestive System NeoplasmsFemaleHumansImmunomagnetic SeparationMaleMiddle AgedBiomarkers, TumorC4BPA protein, humanComplement C4b-Binding ProteinNeoplasm ProteinsReceptors, Polymeric Immunoglobulin

Identifiers

PMID27657339
PMCPMC5061912

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Registered trials

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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.