Purple Book reference family · 351(a) biologic
rebisufligene etisparvovec-hopf (Fayuvi)
rebisufligene etisparvovec-hopf is an FDA-licensed reference biologic from Ultragenyx Pharmaceutical Inc..
351(a) biologicBLA 125845 Ultragenyx Pharmaceutical Inc.
Biosimilars
0
Interchangeables
0
Listed patents
0
Reference approved
2026
Reference product
Originator biologic
351(a)BLA 125845
Fayuvi rebisufligene etisparvovec-hopf
Ultragenyx Pharmaceutical Inc.
View full reference-product record- Approved
- Marketing
- Rx
- Center
- CBER
- Patents
- None listed
Exclusivity & patent cliffs
Protection horizon
Reference approval
Approval date of the reference rebisufligene etisparvovec-hopf product.
24 d ago
rebisufligene etisparvovec-hopf: frequently asked questions
Reference exclusivity, biosimilars, interchangeability, and patents for this molecule, from the FDA Purple Book.
Built from official FDA Purple Book records (monthly downloads, the Advanced Search interface, and the published Patent List), with reference-product, license-type, and exclusivity context for rebisufligene etisparvovec-hopf.
Related FDA reference tools
- FDA Orange BookApproved drugs, generics, therapeutic-equivalence codes, patents, and exclusivity.
- FDA BiosimilarsFDA-approved biosimilars and interchangeable biosimilars, by reference product.
- 510(k) Predicate DatabaseSearch FDA 510(k) clearances and map predicate-device lineage.
- FDA 483 DatabaseFDA Form 483 observations and inspection records by firm, date, and citation.

Go beyond the database.
Try Assyro Intelligence for your regulatory research. Ready to discuss your team’s workflow? Book a demo.
