Evidence map›Paper›PMID 36473488›Full record

ArticleSeminars in thrombosis and hemostasis2023

Factor VIII and Factor IX Activity Measurements for Hemophilia Diagnosis and Related Treatments.

Annette E Bowyer, Robert C Gosselin

Open access · hybridAbstract read
In one paragraph

Article in Seminars in thrombosis and hemostasis, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
5.3field-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

16 citing papers in PubMed, 36 citations in OpenAlex.

  1. Extended Half-Life Factor Concentrates in Haemophilia Treatment.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2026
    Review
  2. Laboratory Challenges in the Era of Novel Haemophilia Therapies.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2026
    Review
  3. Review
  4. A Global Cross-Sectional Database Study of Low Dose FVIII SHL Prophylaxis in Haemophilia A.Haemophilia : the official journal of the World Federation of Hemophilia · 2025
    Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Strategy and Application of Viral Potency Assays in Cell and Gene Therapy.Methods in molecular biology (Clifton, N.J.) · 2025
    Review
  10. Article
  11. Innovative Diagnostic Solutions in Hemostasis.Diagnostics (Basel, Switzerland) · 2024
    Review
  12. Review
  13. Article
  14. Review
  15. To Clot or Not to Clot: Is That the Question?Journal of clinical medicine · 2023
    Article
  16. Quantifying Lupus Anticoagulant Interference in Intrinsic Coagulation Factor Activity Assays and Evaluating the Corrective Performance of the SCT-Based Method.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
    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

2 authors at 2 institutions in 2 countries.

Annette E BowyerDepartment of Coagulation, Royal Hallamshire Hospital, Sheffield, United Kingdom.
Robert C GosselinHemostasis and Thrombosis Center, University of California, Davis Health System, Sacramento, California.
Royal Hallamshire Hospital · GBUC Davis Health System · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Accurate measurement of clotting factors VIII (FVIII) or IX (FIX) is vital for comprehensive diagnosis and management of patients with hemophilia A or B. The one-stage activated partial thromboplastin time (aPTT)-based clotting assay is the most commonly used method worldwide for testing FVIII or FIX activities. Alternatively, FVIII and FIX chromogenic substrate assays, which assess the activation of factor X, are available in some specialized laboratories. The choice of reagent or methodology can strongly influence the resulting activity. Variation between one-stage FVIII or FIX activities has been reported in the measurement of some standard and extended half-life factor replacement therapies and gene therapy for hemophilia B using different aPTT reagents. Discrepancy between one-stage and chromogenic reagents has been demonstrated in some patients with mild hemophilia A or B, the measurement of some standard and extended half-life factor replacement therapies, and the transgene expression of hemophilia A and B patients who have received gene therapy. Finally, the measurement of bispecific antibody therapy in patients with hemophilia A has highlighted differences between chromogenic assays. It is imperative that hemostasis laboratories evaluate how suitable their routine assays are for the accurate measurement of the various hemophilia treatment therapies.

Indexed as

Hemophilia AHemostaticsBlood Coagulation TestsFactor IXFactor VIIIHumansPartial Thromboplastin TimeFactor IXFactor VIIIHemostatics

Identifiers

PMID36473488
PMCPMC10421651
OpenAlexW4311661225

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.