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Manage breakthrough bleeds with reduced doses and frequency of factor or BPA1*†


Initially, the weight-based dose of factor or BPA should be reduced, and the dosing interval doubled compared to the standard dose1

QfitliaTM prophylaxis leads to increased thrombin generation, with an additive increase in peak thrombin when used concomitantly with factor replacement or BPA.1

For breakthrough bleeds occurring more than 7 days after the first dose of Qfitlia1,2†
 Factor VIIIFactor IX (SHL)Factor IX (EHL)aPCCrFVIIa
Recommended dose10 IU/kg20 IU/kg20 IU/kg30 U/kg≤45 μg/kg
Maximum dose
Should not be exceeded in a single dose
20 IU/kg30 IU/kg30 IU/kg50 U/kg-
Repeat dosingShould not repeat in <24 hoursShould not repeat in <24 hoursShould not repeat in <5–7 daysShould not repeat in <24 hoursShould not repeat in <2 hours

*The combined use of antifibrinolytics with factor or BPA has not been studied in clinical studies.1
For patients using on-demand treatment with factor or BPA after Qfitlia initiation, the prior dosing regimen of factor or BPA therapy may be used to treat breakthrough bleeding episodes only for the first 7 days.1
For situations requiring higher doses, more frequent administration, or multiple repeat doses, use clinical judgment. Adjunctive management of bleeding episodes and cases of thrombosis should be carried out per standard of care.1

If adequate hemostatic control is not achieved, higher doses may be used per clinical judgment.1

Qfitlia has been evaluated in 60 major, and 71 minor, surgeries in people with hemophilia A or B, with or without inhibitors. Patients have undergone both major and minor surgical procedures without discontinuing Qfitlia prophylaxis in clinical studies. Bleed management guidance should be utilized during the perioperative period for hemostatic management.1

Adherence to the bleed management guidance on the recommended dose of factor replacement or BPA may help minimize the risk of TEs while on Qfitlia.1

Discover helpful patient resources

Qfitlia offers programs and resources that can help your patients.

Explore the AT-DR

While starting patients on Qfitlia, measuring antithrombin levels will help inform dosing decisions.1

aPCC=activated prothrombin complex concentrate; AT-DR=antithrombin-based dosing regimen; BPA=bypassing agent; EHL=extended half-life; rFVIIa=recombinant Factor VIIa; SHL=standard half-life; TE=thrombotic event.

References

  1. Qfitlia Prescribing Information. Genzyme Corporation. Cambridge, MA.

  2. Data on file CSR. SAR439774-LTE15174 - fitusiran. November 2023.

MAT-AE-2500302-V1-April-25