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ALPROLIX Dosing


ALPROLIX prophylaxis has extended dosing vs SHLs that helps reduce treatment burden1,2

 CONVENIENT STARTING DOSES: 

Adult and Adolescent Starting Doses (≥12 years)1

50 once weekly

OR

100 every 10 days
  • A 7-day interval is the most common EHL prophylaxis regimen in hemophilia B1,2*

*Data are from an online survey conducted by Sanofi in April 2019 with 359 adult patients and caregivers to provide insights into the US hemophilia A and hemophilia B markets. Ninety respondents were adults with hemophilia B and 60 respondents were caregivers of a patient with hemophilia B.2

Pediatric Starting Dose (≤11 years)1

60 once weekly

Flexibility for their growing needs. Simplicity for their caregivers.

  • The same once-weekly schedule as other EHLs, so patients and caregivers can switch with confidence3,4
  • Dosing schedule may be adjusted based on individual response. More frequent or higher doses may be needed, especially in children under 6 years old1
  • On average, 1 IU of ALPROLIX per kg of body weight increases the level of circulating factor IX by approximately 1% in children aged ≥6 years and 0.6% in children aged <6 years1

EXTENDED DOSING OPTIONS: Adults and adolescents (≥12 years)5

14-day interval

2x A MONTH
  • More than half (54%) of patients in the B-LONG clinical trials who started with 10-day dosing (at 100 IU/kg) were able to extend dosing to 14 days or longer6
  • The median duration of exposure to ALPROLIX at a ≥14-day dosing interval was 4.3 years, as reported in a post hoc analysis5†
  • In the B-YOND trial, most patients were on individualized prophy beforehand and were well controlled before they began extending their time between doses5‡
  • 78% (n=18/23) of the patients were able to maintain a dosing schedule of ≥14 days in B-YOND5
    • 5 patients returned to <14-day dosing5
  • Patients in the Kids B-LONG trial were not included in this later analysis5

Data are reported from a post hoc analysis of 23 adult and adolescent patients (aged ≥12 years) who received ALPROLIX prophylaxis with a dosing interval of ≥14 days at any time during B-LONG or B-YOND.5
From a later analysis of 23 people who extended to 14 days or more during the B-LONG and B-YOND trials.5

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With the widest range of options, including a 4000 IU vial, ALPROLIX offers the potential to resolve bleeds with fewer vials1,3,4,7-11

vials
Graphic is for illustrative purposes only.

On-demand dosing with ALPROLIX can be used to control your patients' bleeding episodes1

Major and minor on-demand dosage for patients of all ages1

TYPE OF BLEED

TARGET CIRCULATING FACTOR IX
(IU/dL or % of normal)

DOSING INTERVAL

Minor and moderatea

30-60

Repeat every 48 hours if there is further evidence of bleeding

Majorb

80-100

Consider a repeat dose after 6-10 hours and then every 24 hours for the first 3 days

Due to the long half life of ALPROLIX, the dose may be reduced, and the frequency of dosing may be extended after Day 3 to every 48 hours or longer until bleeding stops and healing is achieved

ALPROLIX reaches peak activity in 10 minutes—as quickly as BeneFIX® [coagulation factor IX (recombinant)]2*† 

Studies have not been conducted to assess the safety or efficacy of ALPROLIX compared with BeneFIX.

aMinor and moderate bleed events. For example: uncomplicated hemarthroses, superficial muscle (except iliopsoas) without neurovascular compromise, superficial soft tissue, mucous membranes.1
bMajor bleed events. For example: iliopsoas and deep muscle with neurovascular injury or substantial blood loss; pharyngeal; retropharyngeal; retroperitoneal; CNS.1
*A subset of 22 patients (the sequential pharmacokinetic subgroup) received consecutive single IV doses of 50 IU/kg BeneFIX and ALPROLIX at the beginning of the B-LONG study (baseline) for direct comparison. For both ALPROLIX and BeneFIX, peak activity was reached approximately 10 minutes after the start of the infusion.2,6
Peak activity level does not mean bleeds are resolved within 10 minutes.2

47% of patients ≥12 years treated with ALPROLIX on-demand during the B-LONG trial switched to ALPROLIX prophylaxis during the B-YOND trial16

47 Arrows HCP Smaller

Perioperative dosing offers hemostatic control for minor and major surgeries1

Major and minor perioperative dosage for patients of all ages1

TYPE OF SURGERY

TARGET CIRCULATING FACTOR IX
(IU/dL or % of normal)

DOSING INTERVAL

Minor
(including uncomplicated
dental extraction)

50-80

A single infusion may be sufficient. Repeat as needed after 24-48 hours until healing is achieved

Major
(any surgical procedure with or without general anesthesia in which a major body cavity was penetrated and exposed, or a substantial impairment of physical or physiological functions was produced)

60-100

Consider a repeat dose after 6-10 hours and then every 24 hours for the first 3 days

Due to the long half life of ALPROLIX, the dose may be reduced and post-operative dosing may be extended after Day 3 to every 48 hours or longer until healing is achieved

  • Thirty-five major surgeries were performed in 22 patients during B-LONG and B-YOND1
  • An additional 62 minor surgeries were performed in 37 patients during B-LONG, Kids B-LONG, and B-YOND1

Clinical Trial Information 

B-LONG was a phase 3 open-label study investigating the safety and efficacy of ALPROLIX in 123 adult and adolescent PTPs aged ≥12 years with severe hemophilia B. Study arms included: fixed-interval (weekly) (n=63), fixed-dose (interval-adjusted) (n=29), episodic (on-demand) (n=27), and surgical (n=12).1

Kids B-LONG was a phase 3 open-label study investigating the safety and efficacy of ALPROLIX in 30 PTPs aged ≤11 years with severe hemophilia. The number of patients 1 to 5 years of age was 15, and 6 to 11 years of age was 15. All 30 patients were treated with ALPROLIX on an individualized prophylactic regimen.1

B-YOND was an open-label extension trial that studied the long-term safety and efficacy of ALPROLIX over 5 years in 120 adult, adolescent, and pediatric patients previously treated in Kids B-LONG or B-LONG. Study arms included: fixed-interval (n=74), fixed-dose (n=36), modified prophylaxis (n=17), and episodic (on-demand) (n=15).12

Why flexible dosing matters in hemophilia B treatment

It’s important for patients to have a treatment that can fit their needs over time, because treatment journeys take many forms

41 percent

of adult patients with severe hemophilia B switch their treatment approach to accommodate changes in their lifestyle13

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Changes in activity

Patients who treat on-demand may recognize the need to transition to prophylaxis14

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Life change

Ongoing prophylaxis may feel burdensome during early adulthood or other transitional life stages, leading to changes in treatment approach15

While the World Federation of Hemophilia recommends use of prophylaxis over on-demand therapy, ALPROLIX can meet your patients where they are, with experience across ages and settings1,14

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Need codes or forms for a patient starting ALPROLIX?

Protection,§ Experience, and Dosing: a discussion with Dr De Angulo

Dr Guillermo De Angulo shares his clinical experience with ALPROLIX.

Hear about how he integrates ALPROLIX into his practice and how he evaluates his patients’ ongoing treatment.

§ALPROLIX has been proven to help patients prevent bleeding episodes using a prophylaxis regimen.1
CNS=central nervous system; EHL=extended half-life; PTP=previously treated patient; SHL=standard half-life. 

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ALPROLIX has safety data across ages and settings1

INDICATION:

ALPROLIX is a recombinant DNA derived, coagulation Factor IX concentrate indicated in adults and children with hemophilia B for:

  • On-demand treatment and control of bleeding episodes
  • Perioperative management of bleeding
  • Routine prophylaxis to reduce the frequency of bleeding episodes

Limitation of Use

ALPROLIX is not indicated for induction of immune tolerance in patients with hemophilia B.

IMPORTANT SAFETY INFORMATION

CONTRAINDICATIONS:

ALPROLIX is contraindicated in patients who have a known history of hypersensitivity reactions, including anaphylaxis, to the product or its excipients.

WARNINGS AND PRECAUTIONS:

  • Allergic-type hypersensitivity reactions, including anaphylaxis, are possible with factor replacement therapies, and have been reported with ALPROLIX. Discontinue use of ALPROLIX if hypersensitivity symptoms occur, and initiate appropriate treatment.
  • Formation of neutralizing antibodies (inhibitors) to Factor IX has been reported following administration of ALPROLIX. Patients using ALPROLIX should be monitored for the development of Factor IX inhibitors. Clotting assays (e.g., one-stage) may be used to confirm that adequate Factor IX levels have been achieved and maintained.
  • The use of Factor IX products has been associated with the development of thromboembolic complications.
  • Nephrotic syndrome has been reported following attempted immune tolerance induction in hemophilia B patients with Factor IX inhibitors and a history of allergic reactions to Factor IX. The safety and efficacy of using ALPROLIX for immune tolerance induction have not been established.

ADVERSE REACTIONS:

The most common adverse reactions (incidence ≥1%) in previously untreated patients were injection site erythema, hypersensitivity, and Factor IX inhibition. The most common adverse reactions (incidence ≥1%) in previously treated patients were headache, oral paresthesia, and obstructive uropathy.

INDICATION:

IMPORTANT SAFETY INFORMATION

References: 1. ALPROLIX. Package insert. Bioverativ Therapeutics Inc; 2023. 2. Data on file. Waltham, MA; Bioverativ Therapeutics Inc. 3. Rebinyn. Package insert. Novo Nordisk Inc; 2022. 4. Idelvion. Package insert. CSL Behring GmbH; 2023. 5. Shapiro AD, Kulkarni RD, Ragni MV, et al. Post hoc longitudinal assessment of efficacy and safety of recombinant factor IX Fc fusion protein in hemophilia B. Blood Adv. 2023;7(13):3049-3057. 6. Powell JS, Pasi KJ, Ragni MV, et al; B-LONG Investigators. Phase 3 study of recombinant factor IX Fc fusion protein in hemophilia B. N Engl J Med. 2013;369(24):2313-2323. 7. Alphanine SD. Package insert. Grifols Biologicals Inc; 2022. 8. Benefix. Package insert. Wyeth Pharmaceuticals Inc; 2022. 9. Ixinity. Package insert. Medexus Pharma, Inc; 2024. 10. Profilnine SD. Package insert. Grifols Biologicals Inc; 2021. 11. Rixubis. Package insert. Takeda Pharmaceuticals U.S.A. Inc; 2025. 12. Pasi KJ, Fischer K, Ragni M, et al. Long-term safety and sustained efficacy for up to 5 years of treatment with recombinant factor IX Fc fusion protein in subjects with haemophilia B: results from the B-YOND extension study. Haemophilia. 2020;26(6):e262-e271. 13. Baumann K, Hernandez G, Witkop M, et al. Impact of mild to severe hemophilia on engagement in recreational activities by US men, women, and children with hemophilia B: the bridging hemophilia B experiences, results and opportunities into solutions (B-HERO-S) study. Eur J Haematol. 2017;98(suppl 86):25-34. 14. Srivastava A, Santagostino E, Dougall A, et al; WFH Guidelines for the Management of Hemophilia panelists and co-authors. WFH guidelines for the management of hemophilia, 3rd edition. Haemophilia. 2020;26(suppl 6):1-158. 15. Thornburg CD, Duncan NA. Treatment adherence in hemophilia. Patient Prefer Adherence. 2017;11:1677-1686. 16. Pasi KJ, Fischer K, Ragni M, et al. Long-term safety and efficacy of extended-interval prophylaxis with recombinant factor IX Fc fusion protein (rFIXFc) in subjects with haemophilia B. Thromb Haemost. 2017;117(3):508-518.

©2025 Sanofi. All rights reserved. ALPROLIX, Sanofi, and HemAssist are trademarks or registered trademarks of Sanofi or an affiliate. All the other trademarks above are the property of their respective owners, who have no affiliation or relationship with Sanofi. MAT-US-2021403-v9.0-11/2025 Last updated: November 2025