Evidence map›Paper›PMID 31997313›Full record

ArticleThe British journal of surgery2020

Machine learning to predict early recurrence after oesophageal cancer surgery.

S A Rahman, R C Walker, M A Lloyd, B L Grace, G I van Boxel, B F Kingma, J P Ruurda, R van Hillegersberg, S Harris, S Parsons and 7 more

Abstract read
In one paragraph

Article in The British journal of surgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 3 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

33 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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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

17 authors.

S A RahmanCancer Sciences Unit, University of Southampton, Southampton, UK.ORCID 0000-0001-9489-0021
R C WalkerCancer Sciences Unit, University of Southampton, Southampton, UK.
M A LloydCancer Sciences Unit, University of Southampton, Southampton, UK.
B L GraceCancer Sciences Unit, University of Southampton, Southampton, UK.
G I van BoxelDepartment of Surgery, University Medical Centre, Utrecht, the Netherlands.
B F KingmaDepartment of Surgery, University Medical Centre, Utrecht, the Netherlands.
J P RuurdaDepartment of Surgery, University Medical Centre, Utrecht, the Netherlands.
R van HillegersbergDepartment of Surgery, University Medical Centre, Utrecht, the Netherlands.
S HarrisDepartment of Public Health Sciences and Medical Statistics, University of Southampton, Southampton, UK.
S ParsonsDepartment of Surgery, Nottingham University Hospitals NHS Trust, Nottingham, UK.
S MercerDepartment of Surgery, Portsmouth Hospitals NHS Trust, Portsmouth, UK.
E A GriffithsDepartment of Upper Gastrointestinal Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.
J R O'NeillCambridge Oesophagogastric Centre, Addenbrookes Hospital, Cambridge University Hospitals Foundation Trust, Cambridge, UK.
R TurkingtonCentre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, UK.
R C FitzgeraldHutchison/Medical Research Council Cancer Unit, University of Cambridge, Cambridge, UK.
T J UnderwoodCancer Sciences Unit, University of Southampton, Southampton, UK.
OCCAMS Consortium

Funding

Cancer Research UK 16463Cancer Research UK 20406Cancer Research UK 22131Cancer Research UK 22720Cancer Research UK 23924Cancer Research UK 25487Cancer Research UK A12770Cancer Research UK A23924
6 · The paper itself

Abstract

backgroundEarly cancer recurrence after oesophagectomy is a common problem, with an incidence of 20-30 per cent despite the widespread use of neoadjuvant treatment. Quantification of this risk is difficult and existing models perform poorly. This study aimed to develop a predictive model for early recurrence after surgery for oesophageal adenocarcinoma using a large multinational cohort and machine learning approaches.

methodsConsecutive patients who underwent oesophagectomy for adenocarcinoma and had neoadjuvant treatment in one Dutch and six UK oesophagogastric units were analysed. Using clinical characteristics and postoperative histopathology, models were generated using elastic net regression (ELR) and the machine learning methods random forest (RF) and extreme gradient boosting (XGB). Finally, a combined (ensemble) model of these was generated. The relative importance of factors to outcome was calculated as a percentage contribution to the model.

resultsA total of 812 patients were included. The recurrence rate at less than 1 year was 29·1 per cent. All of the models demonstrated good discrimination. Internally validated areas under the receiver operating characteristic (ROC) curve (AUCs) were similar, with the ensemble model performing best (AUC 0·791 for ELR, 0·801 for RF, 0·804 for XGB, 0·805 for ensemble). Performance was similar when internal-external validation was used (validation across sites, AUC 0·804 for ensemble). In the final model, the most important variables were number of positive lymph nodes (25·7 per cent) and lymphovascular invasion (16·9 per cent).

conclusionThe model derived using machine learning approaches and an international data set provided excellent performance in quantifying the risk of early recurrence after surgery, and will be useful in prognostication for clinicians and patients.

Indexed as

Clinical Decision RulesEsophagectomyMachine LearningAdenocarcinomaAdultAgedAged, 80 and overArea Under CurveEsophageal NeoplasmsFemaleHumansMaleMiddle AgedNeoplasm Recurrence, LocalRisk AssessmentROC Curve

Identifiers

PMID31997313
PMCPMC7299663

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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.