Evidence map›Paper›PMID 31888547›Full record

ArticleBMC cancer2019

Proposal for a definition of "Oligometastatic disease in pancreatic cancer".

Alexander I Damanakis, Luisa Ostertag, Dirk Waldschmidt, Fabian Kütting, Alexander Quaas, Patrick Plum, Christiane J Bruns, Florian Gebauer, Felix Popp

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 10% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.

  1. Pooled it
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  5. Oligometastatic disease in pancreatic cancer: is there a role for curative-intent surgery? A narrative review.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
    Review
  6. Article
  7. Article
  8. Review
  9. Advances in Vaccine-Based Therapies for Pancreatic Cancer.Journal of gastrointestinal cancer · 2025
    Review
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  11. Article
  12. Article
  13. Article
  14. Review
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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 1 institution in 1 country.

Alexander I DamanakisDepartment of General, Visceral, Cancer and Transplantation Surgery, University Hospital of Cologne, Cologne, Germany. alexander.damanakis@uk-koeln.de.ORCID http://orcid.org/0000-0002-1155-5541
Luisa OstertagDepartment of General, Visceral, Cancer and Transplantation Surgery, University Hospital of Cologne, Cologne, Germany.
Dirk WaldschmidtDepartment of Gastroenterology, University Hospital of Cologne, Cologne, Germany.
Fabian KüttingDepartment of Gastroenterology, University Hospital of Cologne, Cologne, Germany.
Alexander QuaasInstitute of Pathology, University Hospital of Cologne, Cologne, Germany.
Patrick PlumDepartment of General, Visceral, Cancer and Transplantation Surgery, University Hospital of Cologne, Cologne, Germany.
Christiane J BrunsDepartment of General, Visceral, Cancer and Transplantation Surgery, University Hospital of Cologne, Cologne, Germany.
Florian GebauerDepartment of General, Visceral, Cancer and Transplantation Surgery, University Hospital of Cologne, Cologne, Germany.
Felix PoppDepartment of General, Visceral, Cancer and Transplantation Surgery, University Hospital of Cologne, Cologne, Germany.
University Hospital Cologne · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo date, patients with metastasized pancreatic ductal adenocarcinoma (PDAC M1) are regarded as a uniform collective. We hypothesize the existence of oligometastatic disease (OMD): a state of PDAC M1 disease with better tumor biology, limited metastasis, and increased survival.

methodsData of 128 PDAC M1 patients treated at the University of Cologne between 2008 and 2018 was reviewed. Interdependence between clinical parameter was calculated using the Mann-Whitney U-Test. Survival curves were generated using the Kaplan-Meier method and analyzed using the log-rank test.

resultsEighty-one (63%) patients had metastases confined to one organ (single organ metastasis, SOG) whereas the remaining 47 (37%) showed multiple metastatic sites (multi-organ metastasis, MOG). Survival analysis revealed a median overall survival (OS) of 12.2 months for SOG vs 4.5 months for MOG (95% CI 5.7-9.8; p < 0.001). We defined limited disease by the presence of ≤4 metastases in liver or lung. Limited disease together with CA 19-9 baseline < 1000 U/ml and response or stable disease after first-line chemotherapy defined OMD. We identified 8 patients with hepatic metastases and 2 with pulmonary metastases matching all OMD criteria. This group of 10 (7.8%) had a median overall survival of 19.4 vs 7.2 months compared to the remaining patients (95% CI 5.7-9.8; p = 0.009).

conclusionWe propose a definition of oligometastatic disease in PDAC including anatomical criteria and biological criteria reflecting better tumor biology. The 10 OMD patients (7.8%) survived significantly longer and might even benefit from surgical resection in the future.

Indexed as

AdenocarcinomaAgedAged, 80 and overBiomarkers, TumorCarcinoma, DuctalFemaleHumansMaleMiddle AgedNeoplasm InvasivenessNeoplasm MetastasisPancreatic NeoplasmsPhenotypeRetrospective StudiesSurvival AnalysisBiomarkers, TumorChemotherapyMetastasisOligometastasisPancreatic adenocarcinomaSurgery

Identifiers

PMID31888547
PMCPMC6937989
OpenAlexW2998352613

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.