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Loncastuximab tesirine · Zynlonta, ADCT-402

Antibody-drug conjugate · Cytotoxic, directed at CD19 · developed by Adc Therapeutics Sa

Approved FDA, Apr 2021
ADCT Developer
6 Registered trials

What is Loncastuximab tesirine?

Loncastuximab tesirine is an antibody-drug conjugate targeting CD19, consisting of an anti-CD19 monoclonal antibody conjugated to SG3199, a pyrrolobenzodiazepine dimer. Upon binding and internalization, the cytotoxic payload is released and forms DNA interstrand crosslinks, inducing cell death.

Summary written with AI from the sources listed at the end of this page.

At a glance

Also known as
Zynlonta, ADCT-402
Drug type
Antibody-drug conjugate
Targets
CD19
Mechanism
Cytotoxic, directed at CD19
Pathways
DNA interstrand crosslinks, DNA replication inhibition, apoptosis
Therapy area
Oncology
Developer
Adc Therapeutics Sa (ADCT)
FDA status
Approved as Zynlonta (April 23, 2021), BLA761196 · FDA label
UNII
7K5O7P6QIU

✅ FDA-approved uses

From the indications section of the FDA label (version of Jun 12, 2026). Read the full label for the exact wording, limitations and safety information.

🧪 Clinical trials

TrialPhaseConditionStatusSponsor
NCT05991388 Phase 2/3 B-cell Non Hodgkin Lymphoma Recruiting ADCT
NCT05296070 Phase 2 Marginal Zone Lymphoma Recruiting ADCT
NCT06607549 Phase 1 Central Nervous System Lymphoma Recruiting ADCT
NCT05971251 Phase 1 Chronic Lymphocytic Leukemia Active not recruiting ADCT
NCT03685344 Phase 1 Diffuse Large B-Cell Lymphoma Terminated ADCT
NCT02669264 Phase 1 Acute Lymphoblastic Leukemia Terminated ADCT

Trials of the companies BioRadar tracks, from ClinicalTrials.gov, most advanced phase first.

Conditions studied

B-cell Non Hodgkin LymphomaCentral Nervous System LymphomaChronic Lymphocytic LeukemiaMarginal Zone LymphomaAcute Lymphoblastic LeukemiaDiffuse Large B-Cell LymphomaFollicular LymphomaMantle Cell Lymphoma

Other drugs acting on CD19

More from Adc Therapeutics Sa

Sources

Updated Oct 3, 2026. Something wrong or missing? Report it on the ADCT page.

Follow ADCT, the company behind Loncastuximab tesirine

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Data: FDA (Drugs@FDA, Purple Book, DailyMed), NIH (NCI Thesaurus, GSRS, RxNorm), ClinicalTrials.gov • Informational purposes only, not medical or investment advice. • All drugs A–Z

This data is for informational purposes only, not investment advice. BioRadar does not provide buy/sell recommendations. Past performance does not guarantee future results. Always do your own due diligence.