Evidence map›Paper›PMID 32170368›Full record

ArticleHistochemistry and cell biology2020

Cellular organization and histogenesis of adenosquamous carcinoma of the pancreas: evidence supporting the squamous metaplasia concept.

Werner Boecker, Katharina Tiemann, Joerg Boecker, Marieta Toma, Michael H Muders, Thomas Löning, Igor Buchwalow, Karl J Oldhafer, Ulf Neumann, Bernd Feyerabend and 2 more

Open access · hybridAbstract read
In one paragraph

Article in Histochemistry and cell biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 25% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Futility in adenosquamous pancreatic cancer.World journal of surgical oncology · 2026
    Article
  4. Article
  5. Article
  6. [Research progress in clinical pathology and molecular mechanisms of pancreatic adenosquamous carcinoma].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2026
    Review
  7. Prognosis of adenosquamous carcinoma of the pancreas.Langenbeck's archives of surgery · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. In focus in HCB.Histochemistry and cell biology · 2020
    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

12 authors at 7 institutions in 2 countries.

Werner BoeckerGerhard-Domagk Institute of Pathology, University of Münster, Münster, Germany. boeckerwj@gmail.com.
Katharina TiemannDepartment of Pathology/Hematopathology, Institute for Hematopathology, Fangdieckstr. 75, 22547, Hamburg, Germany.
Joerg BoeckerDepartment of Surgery and Transplantation, University Hospital RWTH Aachen, Aachen, Germany.
Marieta TomaInstitute of Pathology, University of Bonn, Bonn, Germany.
Michael H MudersInstitute of Pathology, University of Bonn, Bonn, Germany.
Thomas LöningGerhard-Seifert Reference Center for Oral-, Gyneco-, and Breast Pathology, Hamburg, Germany.
Igor BuchwalowDepartment of Pathology/Hematopathology, Institute for Hematopathology, Fangdieckstr. 75, 22547, Hamburg, Germany. buchwalow@pathologie-hh.de.
Karl J OldhaferDepartment of Surgery, Asklepius Clinic Barmbek, Hamburg, Germany.
Ulf NeumannDepartment of Surgery and Transplantation, University Hospital RWTH Aachen, Aachen, Germany.
Bernd FeyerabendDepartment of Pathology, Asklepius Clinic Barmbek, Hamburg, Germany.
Andre FehrSahlgrenska Cancer Center, Department of Pathology, University of Gothenburg, SE- 405 30, Gothenburg, Sweden.
Göran StenmanSahlgrenska Cancer Center, Department of Pathology, University of Gothenburg, SE- 405 30, Gothenburg, Sweden.
Asklepios Klinik Barmbek · DEInstitut für Hämatopathologie Hamburg · DERWTH Aachen University · DEUniversity of Bonn · DESahlgrenska University Hospital · SEUniversity of Gothenburg · SEUniversity of Münster · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Adenosquamous carcinoma of the pancreas (ASCAP) is characterized by conventional pancreatic ductal adenocarcinoma (PDAC) and squamous carcinoma components with at least 30% of the tumour showing squamous differentiation. To get further insight into the histogenesis of these lesions, we analysed the cellular organization of ASCAP compared to PDACs. Using Immunohistochemistry and triple immunofluorescence labelling studies for keratins, p63, p40, MUC1, MUC2, MUC5AC, Ki67, and EGFR we demonstrate that many ASCAPs contain a transitional zone between the K8/18-positive adenocarcinomatous component and the p63+ /p40+ /K5/K14+ squamous component initiated by the expression of p63 in K8/18+ adenocarcinomatous cells and the appearance of basally located p63+ K5/14+ cells. p63+ K5/14+ cells give rise to fully developed squamous differentiation. Notably, 25% of conventional PDACs without histologically recognizable squamous component contain foci of p63+ p40+ and K5/14+ cells similar to the transitional zone. Our data provide evidence that the squamous carcinoma components of ASCAPs originate from pre-existing PDAC via transdifferentiation of keratin K8/18-positive glandular cells to p63-, p40-, and keratin K5/14-positive squamous carcinoma cells supporting the squamous metaplasia hypothesis. Thus our findings provide new evidence about the cellular process behind squamous differentiation in ASCAPs.

Indexed as

AgedAged, 80 and overCarcinoma, AdenosquamousCarcinoma, Squamous CellCell DifferentiationFemaleHumansKeratinsMaleMiddle AgedPancreatic NeoplasmsKeratinsAdenosquamous carcinomaKeratinsKi67MUC1MUC5ACp40p63PancreasTransdifferentiation

Identifiers

PMID32170368
PMCPMC7343762
OpenAlexW3011848582

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.