Evidence map›Paper›PMID 36457646›Full record

ArticleEClinicalMedicine2023

A machine-learning model for reducing misdiagnosis in heparin-induced thrombocytopenia: A prospective, multicenter, observational study.

Henning Nilius, Adam Cuker, Sigve Haug, Christos Nakas, Jan-Dirk Studt, Dimitrios A Tsakiris, Andreas Greinacher, Adriana Mendez, Adrian Schmidt, Walter A Wuillemin and 8 more

Open access · goldAbstract read
In one paragraph

Article in EClinicalMedicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
6.3field-weighted citation impact, top 3% 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

11 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Artificial intelligence in clinical thrombosis and hemostasis: A review.Research and practice in thrombosis and haemostasis · 2025
    Review
  6. Review
  7. Practical guide to the diagnosis and management of heparin-induced thrombocytopenia.Hematology. American Society of Hematology. Education Program · 2024
    Review
  8. Article
  9. Article
  10. Applications of Artificial Intelligence in Thrombocytopenia.Diagnostics (Basel, Switzerland) · 2023
    Review
  11. 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

18 authors at 10 institutions in 4 countries.

Henning NiliusDepartment of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Adam CukerDepartment of Medicine and Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
Sigve HaugMathematical Institute, University of Bern, Bern, Switzerland.
Christos NakasDepartment of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Jan-Dirk StudtDivision of Medical Oncology and Hematology, University and University Hospital Zurich, Zurich, Switzerland.
Dimitrios A TsakirisDiagnostic Haematology, Basel University Hospital, Basel, Switzerland.
Andreas GreinacherInstitut für Immunologie und Transfusionsmedizin, Universitätsmedizin Greifswald, Greifswald, Germany.
Adriana MendezDepartment of Laboratory Medicine, Kantonsspital Aarau, Aarau, Switzerland.
Adrian SchmidtClinic of Medical Oncology and Hematology, Municipal Hospital Zurich Triemli, Zurich, Switzerland.
Walter A WuilleminDivision of Hematology and Central Hematology Laboratory, Cantonal Hospital of Lucerne and University of Bern, Switzerland.
Bernhard GerberClinic of Hematology, Oncology Institute of Southern Switzerland, Bellinzona, Switzerland.
Johanna A Kremer HovingaDepartment of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Prakash VishnuDivision of Hematology, CHI Franciscan Medical Group, Seattle, United States.
Lukas GrafCantonal Hospital of St Gallen, Switzerland.
Alexander KashevMathematical Institute, University of Bern, Bern, Switzerland.
Raphael SznitmanARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland.
Tamam BakchoulCentre for Clinical Transfusion Medicine, University Hospital of Tübingen, Tübingen, Germany.
Michael NaglerDepartment of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
University of Bern · CHFranciscan Health · USInstitute of Oncology Research · CHKantonsspital Aarau · CHKantonsspital St. Gallen · CHTriemli Hospital · CHUniversitätsmedizin Greifswald · DEUniversity Hospital of Basel · CHUniversity Hospital of Zurich · CHUniversity of Pennsylvania · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Diagnosing heparin-induced thrombocytopenia (HIT) at the bedside remains challenging, exposing a significant number of patients at risk of delayed diagnosis or overtreatment. We hypothesized that machine-learning algorithms could be utilized to develop a more accurate and user-friendly diagnostic tool that integrates diverse clinical and laboratory information and accounts for complex interactions. Methods: We conducted a prospective cohort study including 1393 patients with suspected HIT between 2018 and 2021 from 10 study centers. Detailed clinical information and laboratory data were collected, and various immunoassays were conducted. The washed platelet heparin-induced platelet activation assay (HIPA) served as the reference standard. Findings: HIPA diagnosed HIT in 119 patients (prevalence 8.5%). The feature selection process in the training dataset (75% of patients) yielded the following predictor variables: (1) immunoassay test result, (2) platelet nadir, (3) unfractionated heparin use, (4) CRP, (5) timing of thrombocytopenia, and (6) other causes of thrombocytopenia. The best performing models were a support vector machine in case of the chemiluminescent immunoassay (CLIA) and the ELISA, as well as a gradient boosting machine in particle-gel immunoassay (PaGIA). In the validation dataset (25% of patients), the AUROC of all models was 0.99 (95% CI: 0.97, 1.00). Compared to the currently recommended diagnostic algorithm (4Ts score, immunoassay), the numbers of false-negative patients were reduced from 12 to 6 (-50.0%; ELISA), 9 to 3 (-66.7%, PaGIA) and 14 to 5 (-64.3%; CLIA). The numbers of false-positive individuals were reduced from 87 to 61 (-29.8%; ELISA), 200 to 63 (-68.5%; PaGIA) and increased from 50 to 63 (+29.0%) for the CLIA. Interpretation: Our user-friendly machine-learning algorithm for the diagnosis of HIT (https://toradi-hit.org) was substantially more accurate than the currently recommended diagnostic algorithm. It has the potential to reduce delayed diagnosis and overtreatment in clinical practice. Future studies shall validate this model in wider settings. Funding: Swiss National Science Foundation (SNSF), and International Society on Thrombosis and Haemostasis (ISTH).

Indexed as

AnticoagulantsDiagnosisHeparinHeparin-induced thrombocytopeniaLow-molecular-weightPlatelet countThrombocytopenia

Identifiers

PMID36457646
PMCPMC9706528
OpenAlexW4310073425

What OpenQuestion holds

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LicenceCC BY
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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.