Purple Book product · Reference 351(a)
Zynlonta
loncastuximab tesirine-lpyl
Apr 23, 2021
Approved
Reference 351(a)
License type
Rx
Marketing
None
Listed patents
Sourced from the FDA Purple Book · verified Jul 02, 2026
Key dates
Approval
Approval date of this BLA submission.
Apr 23, 2021
5 yr 4 mo ago
Today
Orphan exclusivity ends
7-year orphan-drug exclusivity window.
Apr 23, 2028
in 1 yr 10 mo
Pharmaceutical detail
Strength
10MG
Dosage form
For Injection
Route
Intravenous
Presentation
Single-Dose Vial
Center
CDER
License number
2166
Product number
001
Submission type
Original
Supplement number
Not listed
Change type
Not listed
Reference product family
View full familyThis is the reference (originator) product. No biosimilars or interchangeables reference it in the Purple Book yet.
Patent list
No patent-list records were published for this product. The Purple Book patent list reflects the statutory patent exchange under the BPCIA and is not exhaustive.
Source provenance
- advanced-searchAdvanced Search · Jul 02, 2026
- monthly-downloadMonthly download · Jul 02, 2026
Change history
- v4Jul 02, 2026
- v3Jul 02, 2026
- v2Jul 02, 2026
Frequently asked questions
Does Zynlonta have approved biosimilars?
No 351(k) biosimilars or interchangeable biosimilars referencing Zynlonta are listed in the FDA Purple Book yet.
What is Zynlonta's BLA number?
Zynlonta is licensed under BLA 761196, held by ADC Therapeutics SA.
When was Zynlonta approved by the FDA?
Zynlonta was approved by the FDA on Apr 23, 2021.
Related FDA reference tools
- FDA Orange BookApproved drugs, generics, therapeutic-equivalence codes, patents, and exclusivity.
- FDA BiosimilarsThe list of FDA-approved biosimilars and interchangeable biosimilars, by reference product.
- 510(k) Predicate DatabaseSearch FDA 510(k) clearances and map predicate-device lineage.
- FDA 483 & Inspection DatabaseFDA Form 483 observations and inspection records by firm, date, and citation.
