Evidence map›Paper›PMID 32914582›Full record

ArticleJournal of thrombosis and haemostasis : JTH2020

ISTH guidelines for the diagnosis of thrombotic thrombocytopenic purpura.

X Long Zheng, Sara K Vesely, Spero R Cataland, Paul Coppo, Brian Geldziler, Alfonso Iorio, Masanori Matsumoto, Reem A Mustafa, Menaka Pai, Gail Rock and 4 more

Erratum issuedAbstract read
In one paragraph

Article in Journal of thrombosis and haemostasis : JTH, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 172 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
172citing papers in PubMed, 9 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

172 citing papers in PubMed, 9 syntheses or guidelines pooled it.

  1. Guideline
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  3. Pooled it
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  6. Alemtuzumab and thrombotic thrombocytopenic purpura: Analysis of an international surveillance database and systematic literature review.Transfusion and apheresis science : official journal of the World Apheresis Association : official journal of the European Society for Haemapheresis · 2025
    Pooled it
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  9. Guideline
  10. Trial
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. A rapid ADAMTS13 activity assay using a portable readout device.Blood vessels, thrombosis & hemostasis · 2026
    Article
  17. Article
  18. Article
  19. Article
  20. Article

112 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors.

X Long ZhengDepartment of Pathology and Laboratory Medicine, The University of Kansas Medical Center, Kansas City, KS, USA.ORCID 0000-0003-1680-5295
Sara K VeselyHudson College of Public Health, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
Spero R CatalandDepartment of Medicine, The Ohio State University, Columbus, OH, USA.ORCID 0000-0001-8977-6910
Paul CoppoCentre de Référence des Microangiopathies Thrombotiques, Service d'Hématologie, Hôpital Saint-Antoine, Assistance Publique, Hôpitaux de Paris, Sorbonne Université, Paris, France.
Brian GeldzilerSomerset, NJ, USA.
Alfonso IorioDepartment of Health Research Methods, Research, and Impact, McMaster University, Hamilton, ON, Canada.ORCID 0000-0002-3331-8766
Masanori MatsumotoDepartment of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan.
Reem A MustafaDepartment of Medicine, The University of Kansas Mediccal Center, Kansas City, KS, USA.
Menaka PaiDepartment of Medicine, McMaster University, Hamilton, ON, Canada.
Gail RockUniversity of Ottawa, Ottawa, CA, USA.
Lene RussellDepartment of Intensive Care, Copenhagen University Hospital, Copenhagen, Denmark.ORCID 0000-0001-7352-8728
Rawan TarawnehDepartment of Neurology, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
Julie ValdesMorristown, NJ, USA.
Flora PeyvandiFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milan, Italy.

Funding

Pathogenesis of thrombotic microangiopathiesR01HL164016 · NHLBI · UNIVERSITY OF KANSAS MEDICAL CENTER · PI X. Long Zheng · 2023 to 2026
$2.1M
Pathogenesis of Thrombotic MicroangiopathyR01HL126724 · NHLBI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI ZHENG, X. LONG · 2015 to 2018
$1.8M
Novel Therapeutics for Acquired Thrombotic Thrombocytopenic PurpuraR01HL144552 · NHLBI · UNIVERSITY OF KANSAS MEDICAL CENTER · PI ZHENG, X. LONG · 2019 to 2022
$1.8M
Mechanism underlying cofactor-dependent proteolysis of von Willebrand FactorR01HL157975 · NHLBI · UNIVERSITY OF KANSAS MEDICAL CENTER · PI ZHANG, XIAOHUI FRANK, ZHENG, X. LONG · 2022 to 2025
$1.8M
NHLBI NIH HHS R01 HL126724NHLBI NIH HHS R01 HL144552NHLBI NIH HHS R01 HL157975NHLBI NIH HHS R01 HL164016
6 · The paper itself

Abstract

backgroundDespite an increase in our understandings of pathogenesis of thrombotic thrombocytopenic purpura (TTP), the approaches for initial diagnosis and management of TTP vary significantly.

objectiveThe evidence-based guidelines of the International Society on Thrombosis and Haemostasis (ISTH) are intended to support patients, clinicians, and other health care professionals in their decisions about the initial diagnosis and management of acute TTP.

methodsIn June 2018, ISTH formed a multidisciplinary panel that included hematologists, an intensive care physician, nephrologist, clinical pathologist, biostatistician, and patient representatives, as well as a methodology team from McMaster University. The panel composition was designed to minimize the potential conflicts of interests. The panel used the Grading of Recommendations Assessment, Development, and Evaluation approach and the Population, Intervention, Comparison, Outcome framework to develop and grade their recommendations. Public comments were sought and incorporated in the final document.

resultsThe panel agreed on three recommendations covering the initial diagnosis with emphasis on the importance of ADAMTS13 testing (eg, activity, anti-ADAMTS13 IgG or inhibitor) and assessment of the pretest probability of TTP by clinical assessment and/or the risk assessment models like the PLASMIC or French score. The panel noted how availability and turnaround time of ADAMTS13 test results might affect early diagnosis and management, in particular the use of caplacizumab.

conclusionsThere is a lack of high-quality evidence to support strong recommendations for the initial diagnosis and management of a suspected TTP. The panel emphasized the importance of obtaining ADAMTS13 testing in a proper clinical context. Future research should focus on how to monitor and act on ADAMTS13 levels during remission.

Indexed as

Purpura, Thrombotic ThrombocytopenicThrombosisADAMTS13 ProteinEarly DiagnosisHemostasisHumansPlasma ExchangeADAMTS13 ProteinADAMTS13diagnosisguidelinesthrombosisTTP

Identifiers

PMID32914582
PMCPMC8146131

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Registered trials

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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.