Evidence map›Paper›PMID 31577805›Full record

Observational studyPloS one2019

A machine learning algorithm predicts molecular subtypes in pancreatic ductal adenocarcinoma with differential response to gemcitabine-based versus FOLFIRINOX chemotherapy.

Georgios Kaissis, Sebastian Ziegelmayer, Fabian Lohöfer, Katja Steiger, Hana Algül, Alexander Muckenhuber, Hsi-Yu Yen, Ernst Rummeny, Helmut Friess, Roland Schmid and 3 more

Open access · goldAbstract readComparative StudyObservational Study
In one paragraph

Observational study in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 2 pooled it
7.7field-weighted citation impact, top 2% 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

39 citing papers in PubMed, 2 syntheses or guidelines pooled it, 74 citations in OpenAlex.

  1. Pooled it
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  3. Review
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  5. Article
  6. Article
  7. Article
  8. Review
  9. Understanding the Conundrum of Pancreatic Cancer in the Omics Sciences Era.International journal of molecular sciences · 2024
    Review
  10. Review
  11. Article
  12. Review
  13. Article
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  15. Article
  16. Neoadjuvant therapy for pancreatic cancer.Nature reviews. Clinical oncology · 2023
    Review
  17. Review
  18. Review
  19. Article
  20. Update on quantitative radiomics of pancreatic tumors.Abdominal radiology (New York) · 2022
    Review
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

13 authors at 2 institutions in 1 country.

Georgios KaissisDepartment of Diagnostic and Interventional Radiology, School of Medicine, Technical University of Munich, Munich, Germany.ORCID 0000-0001-8382-8062
Sebastian ZiegelmayerDepartment of Diagnostic and Interventional Radiology, School of Medicine, Technical University of Munich, Munich, Germany.
Fabian LohöferDepartment of Diagnostic and Interventional Radiology, School of Medicine, Technical University of Munich, Munich, Germany.
Katja SteigerDepartment of Pathology, School of Medicine, Technical University of Munich, Munich, Germany.
Hana AlgülDepartment of Internal Medicine II, School of Medicine, Technical University of Munich, Munich, Germany.
Alexander MuckenhuberDepartment of Pathology, School of Medicine, Technical University of Munich, Munich, Germany.ORCID 0000-0002-0414-1797
Hsi-Yu YenDepartment of Pathology, School of Medicine, Technical University of Munich, Munich, Germany.
Ernst RummenyDepartment of Diagnostic and Interventional Radiology, School of Medicine, Technical University of Munich, Munich, Germany.
Helmut FriessDepartment of Surgery, School of Medicine, Technical University of Munich, Munich, Germany.
Roland SchmidDepartment of Internal Medicine II, School of Medicine, Technical University of Munich, Munich, Germany.
Wilko WeichertDepartment of Pathology, School of Medicine, Technical University of Munich, Munich, Germany.
Jens T SivekeDivision of Solid Tumor Translational Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany.
Rickmer BrarenDepartment of Diagnostic and Interventional Radiology, School of Medicine, Technical University of Munich, Munich, Germany.
Technical University of Munich · DEGerman Cancer Research Center · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDevelopment of a supervised machine-learning model capable of predicting clinically relevant molecular subtypes of pancreatic ductal adenocarcinoma (PDAC) from diffusion-weighted-imaging-derived radiomic features.

methodsThe retrospective observational study assessed 55 surgical PDAC patients. Molecular subtypes were defined by immunohistochemical staining of KRT81. Tumors were manually segmented and 1606 radiomic features were extracted with PyRadiomics. A gradient-boosted-tree algorithm was trained on 70% of the patients (N = 28) and tested on 30% (N = 17) to predict KRT81+ vs. KRT81- tumor subtypes. A gradient-boosted survival regression model was fit to the disease-free and overall survival data. Chemotherapy response and survival were assessed stratified by subtype and radiomic signature. Radiomic feature importance was ranked.

resultsThe mean±STDEV sensitivity, specificity and ROC-AUC were 0.90±0.07, 0.92±0.11, and 0.93±0.07, respectively. The mean±STDEV concordance indices between the disease-free and overall survival predicted by the model based on the radiomic parameters and actual patient survival were 0.76±0.05 and 0.71±0.06, respectively. Patients with a KRT81+ subtype experienced significantly diminished median overall survival compared to KRT81- patients (7.0 vs. 22.6 months, HR 4.03, log-rank-test P = <0.001) and a significantly improved response to gemcitabine-based chemotherapy over FOLFIRINOX (10.14 vs. 3.8 months median overall survival, HR 2.33, P = 0.037) compared to KRT81- patients, who responded significantly better to FOLFIRINOX over gemcitabine-based treatment (30.8 vs. 13.4 months median overall survival, HR 2.41, P = 0.027). Entropy was ranked as the most important radiomic feature.

conclusionsThe machine-learning based analysis of radiomic features enables the prediction of subtypes of PDAC, which are highly relevant for disease-free and overall patient survival and response to chemotherapy.

Indexed as

Carcinoma, Pancreatic DuctalMachine LearningPancreatic NeoplasmsAdultAntineoplastic Combined Chemotherapy ProtocolsDeoxycytidineDisease-Free SurvivalFemaleFluorouracilGemcitabineHumansIrinotecanKeratins, Hair-SpecificKeratins, Type IILeucovorinMaleDeoxycytidineFluorouracilfolfirinoxGemcitabineIrinotecanKeratins, Hair-SpecificKeratins, Type IIKRT81 protein, humanLeucovorinNeoplasm ProteinsOxaliplatin

Identifiers

PMID31577805
PMCPMC6774515
OpenAlexW2979283201

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.