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A Phase 1b/2, Open-Label, Safety and Efficacy Study of Epcoritamab (GEN3013; DuoBody®-CD3xCD20) in Relapsed/Refractory Chronic Lymphocytic Leukemia and Richter's Syndrome


Description

The study is a global, multi-center safety and efficacy trial of epcoritamab, an antibody also known as EPKINLY™ and GEN3013 (DuoBody®-CD3xCD20). Epcoritamab will either be studied as: * Monotherapy, or * Combination therapy: * epcoritamab + venetoclax * epcoritamab + lenalidomide * epcoritamab + R-CHOP (i.e., rituximab, cyclophosphamide, doxorubicin hydrochloride, vincristine (Oncovin®) and prednisone). The study includes patients with relapsed/refractory chronic lymphocytic leukemia (R/R CLL)/small lymphocytic lymphoma (SLL) and patients with Richter's Syndrome (RS). Study participants with R/R CLL/SLL are treated either with epcoritamab as monotherapy or epcoritamab + venetoclax. Study participants with RS are treated either with epcoritamab as monotherapy or epcoritamab + lenalidomide or epcoritamab + R-CHOP. The trial consists of two parts, a dose-escalation phase (phase Ib) and an expansion phase (phase II). Patients with RS are only included in the expansion phase. Ep

Trial Eligibility

Key Inclusion Criteria 1. Eastern Cooperative Oncology Group (ECOG) performance status score of 0, 1 or 2. 2. Evidence of CD20 positivity in a sample representative of the disease at Screening. 3. Acceptable hematology parameters and organ function based on baseline bloodwork. 4. For R/R CLL arms - Must have active CLL/SLL disease requiring treatment per iwCLL 2018 criteria. 5. For R/R CLL arms - Received at least 2 prior lines of systemic anti-neoplastic therapy including a Bruton's tyrosine kinase (BTK) inhibitor. 6. For all RS arms - Have tumor biopsy-proven CD20+ Diffuse large B-cell Lymphoma (DLBCL) and a clinical history of CLL/SLL. 7. For all RS arms - Must have measurable disease by fluorodeoxyglucose-positron emission tomography (FDG-PET) and computed tomography (CT) or magnetic resonance imaging (MRI) scan. 8. For all RS arms - Must provide mandatory formalin-fixed, paraffin-embedded (FFPE) tumor biopsy sample. 9. Life expectancy \>3 months on standard of care (SOC). 10. For RS - monotherapy arm: Deemed as ineligible for chemoimmunotherapy at investigator's discretion or participant who refuses to receive intensive chemotherapy 11. For RS - lenalidomide combination therapy arm * Deemed as ineligible for chemoimmunotherapy at the investigator's discretion, or participant who refuses to receive intensive chemotherapy. * Eligible for treatment with lenalidomide. * Must be willing to use contraception and adhere to the Lenalidomide Pregnancy Risk Minimization Plan 12. For RS - R-CHOP combination Therapy Arm - * Eligible for treatment with R-CHOP. 13. For R/R CLL - venetoclax combination Therapy arm - after receiving at least 1 prior line of systemic antineoplastic therapy. Key Exclusion Criteria 1. Received prior treatment with a CD3×CD20 bispecific antibody. 2. Received any prior allogeneic hematopoietic stem cell transplantation (HSCT) or solid organ transplantation. 3. Received (CAR) T-cell therapy within 100 days or an investigational drug within 4 weeks, prior to first dose of epcoritamab. 4. Autoimmune disease or other diseases that require permanent or high-dose immunosuppressive therapy. 5. Received vaccination with live vaccines within 28 days. 6. Clinically significant cardiac disease. 7. Known current malignancy other than inclusion diagnosis. 8. Has had major surgery within 4 weeks. 9. Active hepatitis B virus or active hepatitis C. 10. Known history of HIV. 11. For R/R CLL arms - Any history of RS or evidence indicating a potential Richter's transformation. 12. Received venetoclax within 24 months prior to beginning venetoclax ramp-up for this trial and progressed on treatment. 13. For all RS arms - Diagnosis of Richter's syndrome not of the DLBCL subtype such as Hodgkin's lymphoma, prolymphocytic leukemia. 14. RS - Lenalidomide Combination Therapy and RS Monotherapy Arms - received more than 2 prior lines of therapy for RS. NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.

Study Info

Organization

Genmab


Primary Outcome

Dose Escalation Phase (R/R CLL arm): Number of Participants with Dose Limiting Toxicities (DLTs)


Outcome Timeframe During the first cycle for low dose cohorts (Cycle length = 28 days) and for high dose cohorts (Cycle length = 35 days)

NCTID NCT04623541

Phases PHASE1,PHASE2

Primary Purpose TREATMENT

Start Date 2020-11-25

Completion Date 2029-06

Enrollment Target 184

Interventions

BIOLOGICAL Epcoritamab

BIOLOGICAL Epcoritamab

DRUG rituximab, cyclophosphamide, doxorubicin, vincristine and prednisone

DRUG Venetoclax

BIOLOGICAL Epcoritamab

DRUG Lenalidomide

Locations Recruiting

O'Neal Comprehensive Cancer Center at University of Alabama at Birmingham

United States, Alabama, Birmingham


City of Hope National Medical Center

United States, California, Duarte


Cedars-Sinai Medical Center

United States, California, Los Angeles


David Geffen School of Medicine

United States, California, Los Angeles


Stanford Cancer Center

United States, California, Palo Alto


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