Loncastuximab tesirine
As of the edition of 20 October 2026, Loncastuximab tesirine is an antibody drug conjugate: marketed, first approved in 2021 (US); acts on CD19; US protection ends in 2033.
Sources: FDA Orange Book and Purple Book, other approval registers, ClinicalTrials.gov, ChEMBL.
The drug
- Status
- Marketed; latest approval 2025
- Kind
- Antibody drug conjugate
- Brand name
- Zynlonta
- First approved
- 23 April 2021 (US)
- Approvals on record
- 3 in 3 regions
- Holder of the most recent approval
- Swedish Orphan Biovitrum; 3 holders in all
- Registered trials
- 32, 9 stopped early
- Disease areas
- Blood and lymph; Cancer; Immune system; Heart and blood vessels; Infections
US protection
US protection ends in 2033.
US protection ends in 2033, computed as 12 years from the first US licence because FDA publishes no date for this product. The application that gives this date is held by ADC Therapeutics. The date is computed, not published.
This is the US only, and it is not the date generics or biosimilars can enter.
The exact date and the listings behind it
In the product2 listings count towards this date. The exact date and each listing are in the product.
Companies that need a new molecule because of this drug
2 companies on route B because of this drug.
Companies on route B for this drug
In the product2 companies are on route B because of Loncastuximab tesirine.
Target
| Gene | Protein | UniProt |
|---|---|---|
| CD19 | B-lymphocyte antigen CD19 | P15391 |
Registered trials
| Phase | Trials | Completed | Active | Stopped early |
|---|---|---|---|---|
| Phase not stated | 1 | 0 | 0 | 0 |
| Phase 1 | 10 | 0 | 6 | 4 |
| Phase 2 | 19 | 1 | 13 | 5 |
| Phase 3 | 2 | 0 | 2 | 0 |
| All trials | 32 |
Who has held its approvals
| Company | Role | Years |
|---|---|---|
| ADC Therapeutics | Originator and Lead sponsor of trials | 2021 to now |
| Swedish Orphan Biovitrum | Applicant | 2022 to now |