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Data updated: Mar 10, 2026

EPKINLY

EPCORITAMAB-BYSP CD20-directed Antibody Interactions
Oncology Approved 2023-05-19

EPKINLY (epcoritamab-bysp) is a bispecific CD20-directed CD3 T-cell engager indicated for the treatment of adult patients with specific types of relapsed or refractory B-cell lymphomas. It is used as a monotherapy for diffuse large B-cell lymphoma (DLBCL) and high-grade B-cell lymphoma after two or more lines of systemic therapy, an indication granted under accelerated approval. For patients with relapsed or refractory follicular lymphoma, the drug is approved for use as a monotherapy after two prior lines of therapy or in combination with lenalidomide and rituximab. This therapeutic provides a targeted treatment option for patients whose disease has progressed following multiple standard systemic treatments.

Source: FDA Label • GENMAB US, INC. • Bispecific CD20-directed CD3 T Cell Engager

How EPKINLY Works

Epcoritamab-bysp is a bispecific antibody designed to simultaneously bind to the CD3 receptor on T-cells and the CD20 antigen expressed on lymphoma cells and healthy B-lineage cells. This dual binding activates T-cells and triggers the release of proinflammatory cytokines, which induces the lysis of B-cells. When administered in combination with rituximab, the drug facilitates both T-cell mediated cytotoxicity and natural killer cell mediated antibody-dependent cellular cytotoxicity. By bridging these immune cells, the drug directs the patient's own immune system to target and eliminate malignant B-cells.

Source: FDA Label
3
Indications
--
Phase 3 Trials
3
Priority Reviews
2
Years on Market

Details

Status
Prescription
First Approved
2023-05-19
Routes
SUBCUTANEOUS
Dosage Forms
INJECTABLE

Companies

Active Ingredient: EPCORITAMAB-BYSP

EPKINLY Approval History

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What EPKINLY Treats

3 indications

EPKINLY is approved for 3 conditions since its original approval in 2023. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Diffuse Large B-Cell Lymphoma
  • High-Grade B-Cell Lymphoma
  • Follicular Lymphoma
Source: FDA Label

EPKINLY Boxed Warning

CYTOKINE RELEASE SYNDROME AND IMMUNE EFFECTOR CELL-ASSOCIATED NEUROTOXICITY SYNDROME Cytokine release syndrome (CRS), including serious or fatal reactions, can occur in patients receiving EPKINLY. Initiate treatment with the EPKINLY step-up dosage schedule to reduce the incidence and severity of CRS. Withhold EPKINLY until CRS resolves or permanently discontinue based on severity [see Dosage and Administration (2.1 , 2.2 , 2.6) and Warnings and Precautions (5.1) ] . Immune Effector Cell-Associat...

EPKINLY Target & Pathway

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Target

CD20 (B-Lymphocyte Antigen CD20) Cell Surface Marker

A protein found on the surface of B-cells but not stem cells or plasma cells. Anti-CD20 antibodies deplete B-cells, making them effective in B-cell cancers and autoimmune diseases where B-cells drive pathology.

EPKINLY Competitors

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10 other drugs also target CD20. Compare mechanisms, indications, and trial activity.

View all 10 CD20 drugs →
Drug = Competitor name Company = Manufacturer N indic. = FDA-approved indications → Date = Patent/exclusivity expiry

Competitors share the same molecular target (CD20). Earlier expiry dates signal biosimilar/generic opportunities.

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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

EPKINLY FDA Label Details

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Indications & Usage

FDA Label (PDF)

EPKINLY is a bispecific CD20-directed CD3 T-cell engager indicated: For the treatment of adult patients with relapsed or refractory diffuse large B-cell lymphoma (DLBCL), not otherwise specified, including DLBCL arising from indolent lymphoma, and high-grade B-cell lymphoma after two or more lines of systemic therapy. This indication is approved under accelerated approval based on response rate and durability of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial(s). In combination with lenalidomide an...

⚠️ BOXED WARNING

WARNING: CYTOKINE RELEASE SYNDROME AND IMMUNE EFFECTOR CELL-ASSOCIATED NEUROTOXICITY SYNDROME Cytokine release syndrome (CRS), including serious or fatal reactions, can occur in patients receiving EPKINLY. Initiate treatment with the EPKINLY step-up dosage schedule to reduce the incidence and severi...

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.