Classification of recombinant factor VIII products and implications for clinical practice: A systematic literature review

Author:

Ay Cihan1ORCID,Napolitano Mariasanta2,Hassoun Abel3,Tomic Radovan4,Martin Cedric5,Seifert Wilfried6,Pinachyan Karen7,Oldenburg Johannes8ORCID

Affiliation:

1. Clinical Division of Haematology and Haemostaseology, Department of Medicine I Medical University of Vienna Vienna Austria

2. PROMISE Department University of Palermo Palermo Italy

3. Haemophilia Treatment Center Simone Veil Hospital, GH Eaubonne‐Montmorency Eaubonne France

4. CSL Behring Milan Italy

5. CSL Behring Paris France

6. CSL Behring Marburg Germany

7. CSL Behring Brussels Belgium

8. Institute of Experimental Hematology and Transfusion Medicine University Hospital Bonn, Medical Faculty University of Bonn Bonn Germany

Abstract

AbstractIntroductionConsensus over the definition of recombinant factor VIII (rFVIII) product classification in haemophilia A is lacking. rFVIII products are often classified as standard half‐life (SHL) or extended half‐life (EHL); despite this, no universally accepted definition currently exists. One proposed definition includes half‐life, area under the curve, and technology designed to extend half‐life; however, the International Society on Thrombosis and Haemostasis defines activity over time as the most intuitive information for building treatment regimens and the World Federation of Hemophilia describes rFVIII product classification in terms of infusion frequency.AimTo summarise published data on the clinical and pharmacokinetic criteria used to define rFVIII product classification.MethodsPubMed and EMBASE database searches of English‐language articles (2002–2022) were conducted using search strings to identify the relevant population, intervention, and outcomes (e.g., clinical and pharmacokinetic parameters). Articles then underwent title/abstract and full‐text screens.ResultsAmong 1147 identified articles, 62 were included. Half‐life was the most widely reported outcome with no clear trends or product groupings observed. No clear groupings emerged among other outcomes, including infusion frequency, consumption, and efficacy. As activity over time was reported in few articles, further investigation of its relevance to rFVIII product classification is warranted.ConclusionThe findings of this systematic literature review suggest that parameters other than half‐life might be important for the development of a comprehensive and clinically relevant rFVIII product classification definition. There seems to be an opportunity to consider parameters that are clinically meaningful and useful for shared decision‐making in haemophilia A treatment.

Funder

CSL Behring

Publisher

Wiley

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