| Muscular Dystrophy, Duchenne
Amondys 45 vs Exondys 51
Side-by-side clinical, coverage, and cost comparison for muscular dystrophy, duchenne.Deep comparison between: Amondys 45 vs Exondys 51 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 signalsExondys 51 has a higher rate of injection site reactions vs Amondys 45 based on FDA-approved prescribing information
Coverage gaps3 major payers require step therapy for Exondys 51 but not Amondys 45, including UnitedHealthcare
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Category
Amondys 45
Exondys 51
At A Glance
IV infusion
Once weekly
Antisense oligonucleotide (exon 45 skipper)
IV infusion
Once weekly
Antisense oligonucleotide (exon 51 skipper)
Indications
- Muscular Dystrophy, Duchenne
- Muscular Dystrophy, Duchenne
Dosing
Muscular Dystrophy, Duchenne 30 mg/kg once weekly as a 35 to 60-minute IV infusion via an in-line 0.2 micron filter.
Muscular Dystrophy, Duchenne 30 mg/kg once weekly as a 35 to 60 minute IV infusion via an in-line 0.2 micron filter.
Contraindications
- Known serious hypersensitivity to casimersen or to any of the inactive ingredients in AMONDYS 45
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Adverse Reactions
Most common (>=20%) Upper respiratory tract infections, cough, pyrexia, headache, arthralgia, oropharyngeal pain
Serious Hypersensitivity reactions including angioedema and anaphylaxis
Postmarketing Infusion-related reactions including rash, headache, cough, abdominal pain, and vomiting; hypersensitivity reactions including angioedema and anaphylaxis
Most common (>=35%) balance disorder, vomiting
Postmarketing bronchospasm, cyanosis of the lips, malaise, pyrexia, flushing, protein urine present, dehydration
Pharmacology
Casimersen is an antisense oligonucleotide (phosphorodiamidate morpholino oligomer subclass) that binds to exon 45 of dystrophin pre-mRNA, causing exon 45 skipping and production of an internally truncated dystrophin protein in patients with DMD mutations amenable to exon 45 skipping.
Eteplirsen is an antisense phosphorodiamidate morpholino oligomer that binds to exon 51 of dystrophin pre-mRNA, causing exon skipping during mRNA processing to allow production of an internally truncated dystrophin protein in patients with DMD mutations amenable to exon 51 skipping.
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Most Common Insurance
Anthem BCBS
Amondys 45
- Covered on 5 commercial plans
- PA (10/12) · Step Therapy (10/12) · Qty limit (0/12)
Exondys 51
- Covered on 5 commercial plans
- PA (10/12) · Step Therapy (10/12) · Qty limit (0/12)
UnitedHealthcare
Amondys 45
- Covered on 4 commercial plans
- PA (0/8) · Step Therapy (0/8) · Qty limit (0/8)
Exondys 51
- Covered on 4 commercial plans
- PA (0/8) · Step Therapy (0/8) · Qty limit (0/8)
Humana
Amondys 45
- Covered on 0 commercial plans
- PA (1/3) · Step Therapy (0/3) · Qty limit (0/3)
Exondys 51
- Covered on 0 commercial plans
- PA (1/3) · Step Therapy (1/3) · Qty limit (0/3)
Coverage data sourced from MMIT. Updated monthly.
Savings
Cost estimate not availableAssistance Fund: Duchenne Muscular Dystrophy
Commercial or private insurance
Medicare, Medicaid, VA, TRICARE
Cost estimate not availableAssistance Fund: Duchenne Muscular Dystrophy
Commercial or private insurance
Medicare, Medicaid, VA, TRICARE
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Amondys 45View full Amondys 45 profile
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Clinical data sourced from FDA-approved labeling. Coverage data via MMIT. Updated monthly.