Evidence map›Paper›PMID 42306844›Full record

SynthesisEuropean journal of haematology2026

Direct Oral Anticoagulants as Primary or Secondary Treatment for Heparin-Induced Thrombocytopenia (HIT) and Associated Thromboembolism (HITT)-A Meta-Analysis.

George Galyfos, Argyris Athanasiou, Athanasios Emmanuel, Nikolaos Intzes, Eleni Kitsou, Panagiotis Theodorou, Sami Hatzikalil, Georgios Sigounas, Frangiska Sigala, Konstantinos Filis

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in European journal of haematology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

10 authors.

George GalyfosVascular Surgery Unit, First Department of Propaedeutic Surgery, NKUA, Hippocration Hospital, Athens, Greece.ORCID https://orcid.org/0000-0002-6077-007X
Argyris AthanasiouVascular Surgery Unit, First Department of Propaedeutic Surgery, NKUA, Hippocration Hospital, Athens, Greece.
Athanasios EmmanuelVascular Surgery Unit, First Department of Propaedeutic Surgery, NKUA, Hippocration Hospital, Athens, Greece.
Nikolaos IntzesVascular Surgery Unit, First Department of Propaedeutic Surgery, NKUA, Hippocration Hospital, Athens, Greece.
Eleni KitsouVascular Surgery Unit, First Department of Propaedeutic Surgery, NKUA, Hippocration Hospital, Athens, Greece.
Panagiotis TheodorouVascular Surgery Unit, First Department of Propaedeutic Surgery, NKUA, Hippocration Hospital, Athens, Greece.
Sami HatzikalilVascular Surgery Unit, First Department of Propaedeutic Surgery, NKUA, Hippocration Hospital, Athens, Greece.
Georgios SigounasVascular Surgery Unit, First Department of Propaedeutic Surgery, NKUA, Hippocration Hospital, Athens, Greece.
Frangiska SigalaVascular Surgery Unit, First Department of Propaedeutic Surgery, NKUA, Hippocration Hospital, Athens, Greece.
Konstantinos FilisVascular Surgery Unit, First Department of Propaedeutic Surgery, NKUA, Hippocration Hospital, Athens, Greece.ORCID https://orcid.org/0000-0001-6309-5201

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionHeparin-induced thrombocytopenia (HIT) is associated with a high risk for thrombosis. The role of direct oral anticoagulants (DOACs) is still emerging and data are limited considering efficacy and safety among patients with HIT. The aim of this review is to evaluate current data on DOACs as primary or secondary treatment among patients with HIT.

methodsThis is a systematic review utilising Pubmed, Scopus and Embase online databases. Eligible studies were published up to December 2024 evaluating DOACs as primary or secondary treatment among patients with HIT and/or associated thrombosis (HITT). Primary outcomes included thrombosis rate (TR) and bleeding rate (BR) during follow-up.

resultsA total of 44 publications were included (29 case reports, 5 case studies and 10 cohort studies [n > 10 patients]). Regarding treatment, 19 articles evaluated only rivaroxaban, 7 articles only apixaban, 11 articles only dabigatran and 7 articles more than one regimen. A total of 352 patients were included. Overall, 190 patients (53.8%) were given DOAC as primary treatment whereas 162 patients were given a parenteral treatment first and continued with a DOAC. Mean nadir platelet count at diagnosis was 63 000/μL. HITT rate was 190/352 (53.9%; 8% had arterial thrombosis). Mean follow-up was 7.6 months. TR was 20/352 (Pooled proportion = 0.064 [95% CI = 0.042-0.092]) (30% of them were new thromboses without initial thrombosis), and BR was 9/352 (Pooled proportion = 0.039 [95% CI = 0.022-0.062]). Finally, there was no difference found regarding TR and BR between primary or secondary treatment, and among different regimens.

conclusionsDOACs are associated with low rates of thrombosis and major bleeding among patients treated for HIT or HITT, either as primary or secondary treatment. However, the certainty of evidence is very low because of the quality and limitations of the available studies.

Indexed as

AnticoagulantsHeparinThrombocytopeniaThromboembolismAdministration, OralHemorrhageHumansPlatelet CountTreatment OutcomeAnticoagulantsHeparinbleedingdirect oral anticoagulantsheparin‐induced thrombocytopeniathrombosis

Identifiers

PMID42306844
PMCPMC13542960

What OpenQuestion holds

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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.