Evidence map›Paper›PMID 32979031›Full record

ArticleJournal of thrombosis and haemostasis : JTH2020

Pharmacodynamic monitoring of factor VIII replacement therapy in hemophilia A: Combining thrombin and plasmin generation.

Lars L F G Valke, Laura H Bukkems, Wideke Barteling, Britta A P Laros-van Gorkom, Nicole M A Blijlevens, Ron A A Mathôt, Waander L van Heerde, Saskia E M Schols

Open access · bronzeAbstract 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. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.9field-weighted citation impact, top 12% 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

13 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Thrombin generation and implications for hemophilia therapies: A narrative review.Research and practice in thrombosis and haemostasis · 2023
    Review
  7. Article
  8. Review
  9. Review
  10. Article
  11. Clinical use of thrombin generation assays.Journal of thrombosis and haemostasis : JTH · 2021
    Review
  12. Assessing Plasmin Generation in Health and Disease.International journal of molecular sciences · 2021
    Review
  13. 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

8 authors at 2 institutions in 1 country.

Lars L F G ValkeDepartment of Hematology, Radboud University Medical Centre, Nijmegen, the Netherlands.ORCID https://orcid.org/0000-0002-8638-3166
Laura H BukkemsDepartment of Hospital Pharmacy-Clinical Pharmacology, Amsterdam University Medical Centers, Amsterdam, the Netherlands.
Wideke BartelingDepartment of Laboratory Medicine, Laboratory of Hematology, Radboud University Medical Centre, Nijmegen, the Netherlands.
Britta A P Laros-van GorkomDepartment of Hematology, Radboud University Medical Centre, Nijmegen, the Netherlands.
Nicole M A BlijlevensDepartment of Hematology, Radboud University Medical Centre, Nijmegen, the Netherlands.
Ron A A MathôtDepartment of Hospital Pharmacy-Clinical Pharmacology, Amsterdam University Medical Centers, Amsterdam, the Netherlands.
Waander L van HeerdeHemophilia Treatment Centre, Nijmegen Eindhoven Maastricht, the Netherlands.
Saskia E M ScholsDepartment of Hematology, Radboud University Medical Centre, Nijmegen, the Netherlands.
Radboud University Nijmegen · NLAmsterdam University Medical Centers · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundClinical severity of hemophilia A (HA) varies, possibly due to interplay of many factors in the hemostatic pathway. Pharmacokinetic monitoring of factor VIII (FVIII) replacement therapy in HA patients consists of measuring FVIII activity levels and subsequent dose adjustment. The Nijmegen Hemostasis Assay (NHA) measures thrombin generation (TG) and plasmin generation (PG).

objectiveTo determine differences in TG and PG between HA patients before and during a pharmacokinetic study and identify best parameters to develop a pharmacodynamic model.

methodsTwenty-five HA patients (baseline FVIII < 1-9 IU/dL) underwent a pharmacokinetic study with a single dose of 25-50 IU/kg standard half-life FVIII concentrate. At baseline and after administration of FVIII TG and PG parameters were measured with the NHA.

resultsFVIII activity level increased from median 1.0 IU/dL (interquartile range < 1.0-6.0) to 71 IU/dL (62-82) 15 minutes after administration and decreased to 15 IU/dL (10-26) at 24 hours. TG was enhanced simultaneously, with thrombin peak height (TPH) increasing from 22nM (15-35) to 222nM (159-255), and thrombin potential (TP) from 404nM/min (undetectable-876) to 1834nM/min (1546-2353). Twenty-four hours after infusion, TG parameters remained high (TPH 73nM [58.5-126.3]; TP 1394nM/min [1066-1677]) compared to FVIII activity level. PG showed hyperfibrinolysis in severe HA patients compared to mild patients and controls, which normalized after FVIII supplementation.

conclusionHA patients showed clear differences in baseline TG and PG despite having comparable FVIII activity levels. These results reveal a discrepancy between FVIII activity level and TG, in which the latter may be a better parameter to monitor individualized treatment in HA patients.

Indexed as

Hemophilia AHemostaticsFactor VIIIFibrinolysinHumansThrombinFactor VIIIFibrinolysinHemostaticsThrombincoagulationfactor VIIIfibrinolysishemophilia Apharmacokinetic

Identifiers

PMID32979031
PMCPMC7756259
OpenAlexW3088656094

What OpenQuestion holds

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LicenceCC BY-NC
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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.