Abstract:
:Vatreptacog alfa is a genetically engineered variant of recombinant factor VIIa (rFVIIa) containing three amino acid changes. Aspartic acid, valine, and glutamine residues replace valine, glutamic acid, and methionine at positions 158, 296, and 298, respectively. These substitutions result in considerable enhancement of the intrinsic (tissue factor-independent) capability to activate factor X and the downstream hemostatic events are consequently augmented. The beneficial effects of vatreptacog alfa have been demonstrated in numerous in vitro systems attempting to mimic hemophilia and corroborated in in vivo models. Vatreptacog alfa has successfully passed through phase 1 and 2 clinical trials and the molecule is currently being explored in phase 3 clinical trial for the treatment of bleedings in hemophilia patients with inhibitors. This article describes the proposed mechanism behind the increased activity and action of vatreptacog alfa and reviews available data, which suggest that vatreptacog alfa could be a valuable addition to the existing portfolio of treatment options for hemophilia patients with inhibitors.
journal_name
Semin Thromb Hemostjournal_title
Seminars in thrombosis and hemostasisauthors
Persson E,Olsen OH,Bjørn SE,Ezban Mdoi
10.1055/s-0032-1302442subject
Has Abstractpub_date
2012-04-01 00:00:00pages
274-81issue
3eissn
0094-6176issn
1098-9064journal_volume
38pub_type
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journal_title:Seminars in thrombosis and hemostasis
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journal_title:Seminars in thrombosis and hemostasis
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journal_title:Seminars in thrombosis and hemostasis
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
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