| Hemophilia B
Alprolix vs Hympavzi
Side-by-side clinical, coverage, and cost comparison for hemophilia b.Deep comparison between: Alprolix vs Hympavzi with Prescriber.AI
AI compares prescribing info and payer-specific access barriers across 1,200+ formularies. Here's a preview of what prescribers are already asking.Safety signalsHympavzi has a higher rate of injection site reactions vs Alprolix based on FDA-approved prescribing information
Coverage gaps3 major payers require step therapy for Hympavzi but not Alprolix, including UnitedHealthcare
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Category
Alprolix
Hympavzi
At A Glance
IV infusion
Weekly or every 10 days
Recombinant Factor IX replacement
SC injection
Weekly
TFPI antagonist
Indications
- Hemophilia B
- Hemophilia A
- Hemophilia B
Dosing
Hemophilia B - On-demand (minor/moderate bleeding) Target FIX level 30-60 IU/dL by IV infusion; repeat every 48 hours if further bleeding is present.
Hemophilia B - On-demand (major bleeding) Target FIX level 80-100 IU/dL by IV infusion; consider repeat dose after 6-10 hours, then every 24 hours for the first 3 days, then every 48 hours or longer until bleeding stops and healing is achieved.
Hemophilia B - Perioperative (minor surgery) Target FIX level 50-80 IU/dL by IV infusion; single infusion may be sufficient; repeat every 24-48 hours as needed until bleeding stops and healing is achieved.
Hemophilia B - Perioperative (major surgery) Target FIX level 60-100 IU/dL by IV infusion; consider repeat dose after 6-10 hours, then every 24 hours for the first 3 days, then every 48 hours or longer until bleeding stops and healing is achieved.
Hemophilia B - Routine prophylaxis 50 IU/kg IV once weekly or 100 IU/kg IV once every 10 days for adults and adolescents >=12 years; adjust dose and frequency based on individual response, with more frequent or higher doses possibly needed in children.
Hemophilia A, Hemophilia B Loading dose 300 mg SC (two 150 mg injections); maintenance 150 mg SC once weekly starting one week after loading dose; consider dose adjustment to 300 mg SC weekly in patients >=50 kg with inadequate bleeding control.
Contraindications
- Known history of hypersensitivity reactions, including anaphylaxis, to ALPROLIX or its excipients (sucrose, mannitol, sodium chloride, L-histidine, polysorbate 20)
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Adverse Reactions
Most common (>=1%) in previously treated patients Headache, oral paresthesia, obstructive uropathy
Most common (>=1%) in previously untreated patients Injection site erythema, hypersensitivity, Factor IX inhibition
Postmarketing Factor IX inhibitor development, hypersensitivity including anaphylaxis
Most common (>=3%) Injection site reaction, headache, pruritus
Serious Thromboembolic events, hypersensitivity, peripheral swelling, venous thrombosis
Pharmacology
ALPROLIX is a recombinant Factor IX Fc fusion protein that temporarily replaces the missing coagulation Factor IX needed for effective hemostasis; the Fc region binds to the neonatal Fc receptor (FcRn), recycling the protein back into circulation and prolonging its plasma half-life.
Marstacimab-hncq is a human monoclonal IgG1 antibody that targets the Kunitz domain 2 (K2) of tissue factor pathway inhibitor (TFPI), neutralizing TFPI activity and enhancing thrombin generation via the extrinsic coagulation pathway.
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Most Common Insurance
Anthem BCBS
Alprolix
- Covered on 5 commercial plans
- PA (9/12) · Step Therapy (0/12) · Qty limit (0/12)
Hympavzi
- Covered on 5 commercial plans
- PA (10/12) · Step Therapy (0/12) · Qty limit (0/12)
UnitedHealthcare
Alprolix
- Covered on 4 commercial plans
- PA (0/8) · Step Therapy (0/8) · Qty limit (0/8)
Hympavzi
- Covered on 4 commercial plans
- PA (4/8) · Step Therapy (4/8) · Qty limit (3/8)
Humana
Alprolix
- Covered on 0 commercial plans
- PA (0/3) · Step Therapy (0/3) · Qty limit (0/3)
Hympavzi
- Covered on 0 commercial plans
- PA (1/3) · Step Therapy (0/3) · Qty limit (1/3)
Coverage data sourced from MMIT. Updated monthly.
Savings
Cost estimate not availableAccessia Health: Inherited and Acquired Factor Deficiencies - Private Insurance: Waitlist
Commercial or private insurance
Medicare, Medicaid, VA, TRICARE
Cost estimate not availableAccessia Health: Inherited and Acquired Factor Deficiencies - Private Insurance: Waitlist
Commercial or private insurance
Medicare, Medicaid, VA, TRICARE
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AlprolixView full Alprolix profile
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Clinical data sourced from FDA-approved labeling. Coverage data via MMIT. Updated monthly.