Evidence map›Paper›PMID 35772127›Full record

SynthesisBlood advances2022

ICH in primary or metastatic brain cancer patients with or without anticoagulant treatment: a systematic review and meta-analysis.

Michela Giustozzi, Giulia Proietti, Cecilia Becattini, Fausto Roila, Giancarlo Agnelli, Mario Mandalà

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Blood advances, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
6.2field-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

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 49 citations in OpenAlex.

  1. Pooled it
  2. SEOM clinical guidelines on venous thromboembolism (VTE) and cancer (2023).Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2024
    Guideline
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Review
  9. Review
  10. Anticoagulation in malignancy: the patient who bleeds and clots simultaneously.Hematology. American Society of Hematology. Education Program · 2025
    Review
  11. Review
  12. 2025 Thai guideline for the diagnosis and management of atrial fibrillation.Asian biomedicine : research, reviews and news · 2025
    Article
  13. Cerebrovascular and Peripheral Vascular Complications in Cancer Patients.Current neurology and neuroscience reports · 2025
    Review
  14. Evaluation of primary venous thromboembolism prophylaxis in hospitalized patients with primary brain tumors or secondary brain metastases.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2025
    Article
  15. Article
  16. Review
  17. Review
  18. Management of anticoagulation in patients with brain metastasis.Hematology. American Society of Hematology. Education Program · 2024
    Review
  19. Observational
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Michela GiustozziInternal Cardiovascular and Emergency Medicine, Stroke Unit, University of Perugia, Perugia, Italy; and.ORCID 0000-0002-8033-4945
Giulia ProiettiUnit of Medical Oncology, University of Perugia, Perugia, Italy.
Cecilia BecattiniInternal Cardiovascular and Emergency Medicine, Stroke Unit, University of Perugia, Perugia, Italy; and.
Fausto RoilaUnit of Medical Oncology, University of Perugia, Perugia, Italy.
Giancarlo AgnelliInternal Cardiovascular and Emergency Medicine, Stroke Unit, University of Perugia, Perugia, Italy; and.
Mario MandalàUnit of Medical Oncology, University of Perugia, Perugia, Italy.
University of Perugia · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Anticoagulant treatment in patients with primary and metastatic brain cancer is a concern due to risk of intracranial hemorrhage (ICH). We performed a systematic review and meta-analysis to evaluate the risk of ICH in patients with primary or metastatic brain cancer treated with or without anticoagulants. Articles on ICH in patients with primary or metastatic brain cancer treated with or without anticoagulants published up to September 2021 were identified by searching PubMed, EMBASE, and Cochrane Library databases. The primary outcome of this analysis was ICH. Thirty studies were included. Rate of ICH was 13.0% in 1009 patients with metastatic brain cancer and 6.4% in 2353 patients with primary brain cancer (relative risk [RR], 3.26; 95% confidence interval [CI], 2.69-3.94; I2 = 92.8%). In patients with primary brain cancer, ICH occurred in 12.5% and 4.4% of patients treated with or without anticoagulants, respectively (11 studies, 659 treated and 1346 not treated patients; RR, 2.63; 95% CI, 1.48-4.67; I2 = 49.6%). In patients with metastatic brain cancer, ICH occurred in 14.7% and 15.4% (5 studies, 265 treated and 301 not treated patients; RR, 0.92; 95% CI, 0.43-1.93; I2 = 0%). ICH occurred in 8.3% of 172 treated with direct oral anticoagulants (DOACs) and in 11.7% of 278 treated with low-molecular weight heparin (LMWH) (5 studies; RR, 0.44; 95% CI, 0.25-0.79; I2 = 0%). Patients with metastatic brain cancer have a particularly high risk of ICH. Patients with primary brain cancer have an increased risk of ICH during anticoagulation. DOACs are associated with a lower risk of ICH than LMWH.

Indexed as

AnticoagulantsBrain NeoplasmsAdministration, OralHeparin, Low-Molecular-WeightHumansIntracranial HemorrhagesAnticoagulantsHeparin, Low-Molecular-Weight

Identifiers

PMID35772127
PMCPMC9631668
OpenAlexW4283750497

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.