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| Clinical data | |
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| Trade names | Bevyxxa |
| Other names | PRT054021, PRT064445 |
| AHFS/Drugs.com | bevyxxa |
| Routes of administration | By mouth |
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| Pharmacokinetic data | |
| Protein binding | 60% |
| Elimination half-life | 19–27 hrs |
| Duration of action | ≥72 hrs |
| Excretion | 85% feces, 11% urine |
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| ECHA InfoCard | 100.207.746 |
| Chemical and physical data | |
| Formula | C23H22ClN5O3 |
| Molar mass | 451.91 g·mol−1 |
| 3D model (JSmol) | |
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Betrixaban (trade name Bevyxxa) is an oral anticoagulant drug which acts as a direct factor Xa inhibitor. [1] Betrixaban is FDA approved for venous thrombosis prevention in adults hospitalized for an acute illness who are at risk for thromboembolic complications. [2] Compared to other directly acting oral anticoagulants betrixaban has relatively low renal excretion and is not metabolized by CYP3A4. [3]
Betrixaban was originally developed by Millennium Pharmaceuticals. Portola Pharmaceuticals acquired rights for betrixaban in 2004 and co-developed it with Merck. In 2011 Merck discontinued joint development. [4]
The drug has undergone clinical trials for prevention of embolism after knee surgery [5] and for prevention of stroke following non-valvular atrial fibrillation. [6] [7] Betrixaban was also studied in a large phase III clinical trial for extended duration thromboprophylaxis in acute ill patients. [8] Previously apixaban and rivaroxaban have failed to show positive risk/benefit ratio in this indication compared to enoxaparin. [9] [10] [ non-primary source needed ] APEX trial compared betrixaban with enoxaparin and included 7513 patients. Lower rate of VTE events was found in betrixaban arm with no increase in major bleedings compared to enoxaparin. [11] Based on these results betrixaban was approved by FDA on June 23, 2017, becoming the first DOAC approved for extended prophylaxis in hospitalized patients. [12]
Betrixaban has been also reviewed by EMA but didn't receive marketing approval in EU mainly due to concerns of increased bleeding risk and absence of reversal agent. [13]