A Sub-study Trial of Epcoritamab vs Investigator's Choice Chemotherapy in Relapsed/Refractory Diffuse Large B-cell Lymphoma (R/R DLBCL) in China

What this study involves

The registry does not currently label this study as recruiting. Ask about its status before planning a screening visit.

Study type

Interventional

Phase

Phase 3

Age range

18 years - Not specified

Sex eligible

All sexes

Healthy volunteers

Not accepted

Participants

72 Actual

These are starting points, not an eligibility decision. The research team must review the full requirements.

About the research

The purpose of this Chinese sub-study trial is to find out if epcoritamab, also known as EPKINLY™ and GEN3013, is safe and works well as treatment for participants with DLBCL that are not responding to treatment, have grown in size, or have come back following treatment with at least 1 prior systemic cancer therapy. All participants in this trial will be randomly assigned to receive either epcoritamab or a pre-specified investigator's choice (standard of care) chemotherapy (either rituximab + gemcitabine + oxaliplatin \[R-GemOx\], or bendamustine + rituximab \[BR\]). Participants must have failed or be ineligible to receive an autologous stem cell transplant (ASCT).

Epcoritamab will be injected under the skin. Investigator's choice chemotherapy will be given intravenously.

Trial details include:

The trial duration will be up to 5 years after last participant is randomized. All trial participants have a 21-day screening period, a treatment period, and a follow-up period that continues until death.

The estimated trial duration for an individual participant depends upon the treatment arm assigned:

Participants who receive epcoritamab will have 28-day treatment cycles. Epcoritamab will be given once weekly for the first 3 months, then every other week for 6 months, then every 28 days until lymphoma progression or unacceptable adverse events.

Participants who receive investigator's choice (standard of care) chemotherapy will receive treatments either:

R-GemOx: On Day 1 (or Day 1 \& Day 2), and Day 15 (or Day 15 \& Day 16) every 28 days, for up to 4 months; or BR: On Day 1 and Day 2 every 3 weeks for up to 4.5 months.

Who may be able to participate?

The list below is the sponsor’s full registry wording. It can include conditions, prior treatment, test results and other requirements. A match in search does not mean you qualify.

Main Inclusion Criteria:

1. Relapsed or refractory disease and previously treated with at least 1 line of systemic antineoplastic therapy including anti-CD20 monoclonal antibody (mAb)-containing combination chemotherapy since lymphoma diagnosis.
2. One of the confirmed histologies below with CD20-positivity:

1\. DLBCL, not otherwise specified (NOS), including de novo or histologically transformed from follicular lymphoma (FL) 2. "Double-hit" or "triple-hit" DLBCL (technically classified in World Health Organization (WHO) 2016 as high-grade B-cell lymphoma (HGBCL), with MYC and BCL2 and/or BCL6 translocations), including de novo or histologically transformed from FL 3. FL Grade 3B 4. T-cell/histiocyte-rich large B-cell lymphoma

3\. Eastern Cooperative Oncology Group Performance Status (ECOG PS) score of 0-2 4. Failed previous HDT-ASCT or not eligible for high-dose therapy autologous stem cell transplant (HDT-ASCT) at screening 5. Participants must have detectable disease by positron emission tomography (PET) scan and measurable by computed tomography (CT) scan or magnetic resonance imaging (MRI) 6. Acceptable renal and liver function 7. Life expectancy \>2 months on standard of care treatment

Main Exclusion Criteria:

1. Primary Central Nervous System (CNS) tumor or known CNS involvement
2. Any prior therapy with a bispecific antibody targeting CD3 and CD20
3. Major surgery within 4 weeks prior to randomization
4. Chemotherapy and other non-investigational antineoplastic agents (except CD20 mAbs) within 4 weeks or 5 half-lives (whichever is shorter) prior to randomization
5. Any investigational drug within 4 weeks or 5 half-lives, whichever is longer, prior to randomization
6. Autologous stem cell transplant (ASCT) within 100 days of randomization
7. Treatment with chimeric antigen receptor T-cell (CAR-T) therapy within 100 days prior to randomization
8. Seizure disorder requiring anti-epileptic therapy
9. Clinically significant cardiac disease

Note: Other protocol-defined Inclusion and Exclusion criteria may apply.

Treatment, groups and participation

The registry may describe treatments and study duration without a complete visit calendar. Ask the study team for the exact schedule, procedures, risks, costs and alternatives. Keep your usual care plan unless your treating clinician tells you otherwise.

Assignment

Random assignment

Masking

No masking

What researchers are measuring

Outcome measures describe what is being studied. They are not proof that a treatment works.

Primary measures

Research locations (23)

The overall study status and a local site’s status can differ. Confirm that location’s availability before traveling.

23 locations

Study team and timeline

Lead sponsor

Genmab

Study start

Oct 8, 2022 Actual

Primary completion

Oct 13, 2025 Actual

Study completion

Jun 14, 2028 Estimated

First posted

Nov 10, 2025 Actual

Last updated

Nov 10, 2026 Actual

Official study contacts

No central contact is listed. Check the locations and the official record.