ArticleHaemophilia : the official journal of the World Federation of Hemophilia2021
Exploratory in vitro evaluation of thrombin generation of eptacog beta (recombinant human fviia) and emicizumab in congenital haemophilia A plasma.
Article in Haemophilia : the official journal of the World Federation of Hemophilia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 10 citations in OpenAlex.
- Safety and Use of Eptacog Beta 225 µg/kg in Patients With Haemophilia A or B With Inhibitors.Haemophilia : the official journal of the World Federation of Hemophilia · 2025Trial
- PERSEPT 3: A phase 3 clinical trial to evaluate the haemostatic efficacy of eptacog beta (recombinant human FVIIa) in perioperative care in subjects with haemophilia A or B with inhibitors.Haemophilia : the official journal of the World Federation of Hemophilia · 2021Trial
- Safety and real-world effectiveness of eptacog beta with emicizumab prophylaxis: an interim analysis of the ATHN 16 study.Blood vessels, thrombosis & hemostasis · 2026Article
- Treatment of severe bleeds with eptacog beta in hemophilia A or B with inhibitors: a post hoc analysis of the PERSEPT 1 and 2 trials.Blood vessels, thrombosis & hemostasis · 2025Article
- Thrombin generation for monitoring hemostatic therapy in hemophilia A: A narrative review.Journal of thrombosis and haemostasis : JTH · 2022Review
- An Ex Vivo Pharmacodynamic Study of KN057, a Tissue Factor Pathway Inhibitor Neutralizing Antibody, in Plasma Samples From Patients With Haemophilia or VWD3.Haemophilia : the official journal of the World Federation of HemophiliaArticle
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
INTRODUCTION/
aimEptacog beta is a recombinant activated human factor VII approved to treat and control bleeding in haemophilia A and B patients with inhibitors. Emicizumab is a factor VIIIa mimetic antibody approved for prophylactic treatment of haemophilia A with and without inhibitors (HAI and HA, respectively). Inhibitor patients treated with emicizumab should expect breakthrough bleeding that requires bypassing agent treatment to restore haemostasis. The aim of this study is to quantify the in vitro thrombin generation induced by the addition of eptacog beta to HAI and HA plasma containing emicizumab.
methodsThrombin generation assays were performed using HAI and HA plasma. Thrombin generation parameters were examined using a fixed effects model with inhibitor titre, eptacog beta concentration and emicizumab concentration as main effects, and eptacog beta concentration with inhibitor and emicizumab concentration with inhibitor as interaction effects.
resultsA significant increase in peak thrombin, ETP and velocity was observed when combinations of eptacog beta (0, 1, 2 or 5 µg/ml) and emicizumab (0, 50 or 100 µg/ml) were evaluated in HA and HAI plasma; the effect remained below that observed in Normal Plasma (NP). A small shortening of lag time below that of NP was observed.
conclusionsEptacog beta and emicizumab induced thrombin generation in haemophilia A plasma (with and without inhibitors) with the thrombin generation parameters remaining below those of normal plasma. These data provide in vitro proof of concept supporting the concept of use of eptacog beta for the treatment and control of breakthrough bleeding in patients on emicizumab prophylaxis.
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