| Standard half-life comparison |
| In a phase I PK comparison study, Rebinyn® demonstrated 10x greater AUC than BeneFIX.1,a |
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| Extended half-life comparison |
| Another phase I PK comparison study showed the AUC of Rebinyn® was 4x greater than that of Alprolix.2,b |
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The clinical relevance of these PK differences is unknown |
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Rebinyn® is not approved for routine prophylaxis |
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| aBased upon a phase 1 study of patients administered 1 of 3 doses of Rebinyn® (25, 50, or 100 IU/kg) compared with one 50 IU/kg dose of their prior SHL rFIX (BeneFIX, n=7) or pdFIX (n=8) using a one-stage assay and product-specific standard. For Rebinyn®, estimated mean activity is adjusted to a dose of 50 IU/kg to allow for comparison of dose-dependent parameters. Comparisons above were significant (P<0.001). Differences were also seen between Rebinyn® and pdFIX (AUC 70 vs 9 IU x h/mL, 8x, P<0.001).1 |
| bBased upon a phase 1 study of 15 patients administered a single dose of Rebinyn® 50 IU/kg compared with a single dose of Alprolix 50 IU/kg using both one-stage and chromogenic assays. The standard Alprolix dose of 50 IU/kg was administered for both products to allow for comparison of dose-dependent parameters; dose normalized to 50 IU/kg to reflect minor differences in dose administered. Geometric mean half-life was also prolonged (Rebinyn: 103.2 hours, Alprolix 84.9 hours). All comparisons were significant (P<0.001) for both assays.2 |
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| Indications and Usage |
| Rebinyn®, Coagulation Factor IX (Recombinant), GlycoPEGylated, is a recombinant DNA derived coagulation Factor IX concentrate indicated for use in adults and children with hemophilia B for on demand treatment and control of bleeding episodes and perioperative management of bleeding. |
| Limitations of Use: Rebinyn® is not indicated for routine prophylaxis or for immune tolerance induction in patients with hemophilia B. |
| Important Safety Information (cont’d) |
| Warnings and Precautions |
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Development of neutralizing antibodies (inhibitors) to Factor IX may occur. Monitor patients for development of Factor IX inhibitors if bleeding is not controlled with the recommended dose of Rebinyn® or if expected Factor IX activity plasma levels are not attained. Factor IX activity assay results may vary with the type of activated partial thromboplastin time reagent used. |
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The use of Factor IX-containing products has been associated with thrombotic complications. Monitor for thrombotic and consumptive coagulopathy when administering Rebinyn® to patients with liver disease, post-operatively, to newborn infants, or to patients at risk of thrombosis or disseminated intravascular coagulation (DIC). |
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Nephrotic syndrome has been reported following immune tolerance induction therapy with Factor IX products in hemophilia B patients with Factor IX inhibitors, often with a history of allergic reactions to Factor IX. The safety and efficacy of using Rebinyn® for immune tolerance induction have not been established. |
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| Adverse Reactions |
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The most common adverse reactions reported in clinical trials (≥1%) were itching and injection site reactions. |
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Animals administered repeat doses of Rebinyn® showed accumulation of PEG in the choroid plexus. The potential clinical implications of these animal findings are unknown. |
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| Please click here for Prescribing Information. |
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| 1. |
Negrier C, Knobe K, Tiede A, Giangrande P, Møss J. Enhanced pharmacokinetic properties of a glycoPEGylated recombinant factor IX: a first human dose trial in patients with hemophilia B. Blood. 2011;118(10):2695-2701. |
| 2. |
Escuriola Ettingshausen C, Hegemann I, Simpson ML, et al. Favorable pharmacokinetics in hemophilia B for nonacog beta pegol versus recombinant factor IX-Fc fusion protein: a randomized trial. Res Pract Thromb Haemost. 2019;00:1–9. |
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Rebinyn® is a registered trademark of Novo Nordisk Health Care AG. Novo Nordisk is a registered trademark of Novo Nordisk A/S. © 2021 Novo Nordisk All rights reserved. US21REB00018 September 2021 |
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