Emicizumab treatment: Impact on coagulation tests and biological monitoring of haemostasis according to clinical situations (BIMHO group proposals).

Abstract:

:Emicizumab, a bispecific humanised monoclonal antibody restoring to some extent the function of activated FVIII deficient in haemophilia A, represents a major therapeutic advance in the management of haemophilia A patients. No dosage adjustment is required, which leads to a major change for patients used to regular biological monitoring which is particularly burdensome in the case of substitution therapy. In some circumstances, such as before an invasive procedure or in case of bleeding, biological monitoring will be necessary and emicizumab's interference with haemostasis tests, particularly those based on an activated partial thromboplastin times (aPTT), must be known to best interpret the tests and to select the most appropriate methods to guide therapy. The normalisation of aPTT in patients treated with emicizumab is not sufficient to consider haemostasis as normalised. In the event of administration of FVIII to a patient receiving emicizumab, the determination of FVIII should use a chromogenic method using non-human reagents. Coagulation global tests have been proposed to evaluate the biological response when using bypassing agents in patients treated with emicizumab, but the usefulness must be confirmed. The French group BIMHO presents proposals for biological monitoring of a patient treated with emicizumab according to clinical situations.

journal_name

Eur J Haematol

authors

Nougier C,Jeanpierre E,Ternisien C,Proulle V,Hezard N,Pouplard C,Lasne D,With contributions from the Working Group on Biology of Haemorrhagic Disorders (BIMHO, Under the Aegis of GFHT).

doi

10.1111/ejh.13490

subject

Has Abstract

pub_date

2020-12-01 00:00:00

pages

675-681

issue

6

eissn

0902-4441

issn

1600-0609

journal_volume

105

pub_type

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