On June 11, 2022 Genmab A/S (Nasdaq: GMAB) reported that primary results from the large B-cell lymphoma (LBCL) expansion cohort in the EPCORE NHL-1 phase 2 clinical trial evaluating subcutaneous epcoritamab (DuoBody-CD3xCD20), an investigational bispecific antibody (Press release, Genmab, JUN 11, 2022, View Source [SID1234615908]). In the study, treatment with epcoritamab demonstrated deep and durable responses with an overall response rate (ORR) of 63 percent and a complete response rate (CR) of 39 percent in patients who had previously received at least two prior lines of systemic anti-lymphoma therapy. Additionally, patients naïve to treatment with chimeric antigen receptor (CAR) T-cell therapy achieved 69 percent ORR and 42 percent CR and patients previously treated with CAR T achieved a 54 percent ORR and 34 percent CR. Data were presented in a late-breaking oral presentation as a part of the Presidential Symposium at the 27th Annual Meeting of the European Hematology Association (EHA) (Free EHA Whitepaper) (EHA2022) in Vienna, Austria (Abstract #LB2364).

Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:

Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

                  Schedule Your 30 min Free Demo!

"Large B-cell lymphoma is a fast-growing, difficult to treat type of aggressive non-Hodgkin’s lymphoma. Some treatment approaches like chemotherapy and immunotherapy have been in place for decades and newer treatments like CAR T-cell therapies involve multiple steps before a patient can begin treatment, so there is still a need for additional treatment options," said Professor Catherine Thieblemont, Head of the Hemato-Oncology Department at Hôpital Saint-Louis, Paris, France. "The data presented today suggest that epcoritamab has the potential to provide patients living with relapsed/refractory LBCL an accessible, effective treatment with a safety profile that may fulfill an unmet need."

The study cohort, which included 157 relapsed/refractory LBCL patients, previously treated with a median of three lines of prior therapy, demonstrated an overall response rate (ORR) of 63 percent and a complete response rate (CR) of 39 percent. Baseline characteristics included 61 percent of patients who were refractory to primary treatment, 20 percent who had prior autologous stem cell transplantation (ASCT), and 39 percent who were treated with CAR T-cell therapy (75 percent of those refractory to CAR T). Patients enrolled in the study who were naïve to CAR T therapy achieved a 69 percent ORR and a 42 percent CR and patients who received prior CAR T-cell treatment achieved a 54 percent ORR and a 34 percent CR. After a median follow up of 10.7 months, the median duration of response (mDOR) was estimated to be 12 months, while the mDOR among patients achieving a CR was not reached, with 89 percent still in CR at nine months. Topline results from this study were previously announced in April 2022.

"These latest data are promising because they suggest that treatment with epcoritamab may benefit patients with this fast-growing, aggressive and difficult to treat type of non-Hodgkin’s lymphoma who are in need of new therapeutic advances," said Jan van de Winkel, Ph.D., Chief Executive Officer of Genmab. "We are encouraged by the potential of epcoritamab and look forward to continuing to advance our robust clinical development program with our partner, AbbVie."

The safety profile of epcoritamab was manageable and consistent with previous findings. The majority of treatment-emergent AEs (TEAEs) occurred during the first 12 weeks of treatment and resolved. The most common TEAEs of any grade (greater than or equal to 15 percent) included cytokine release syndrome (CRS) (49.7 percent), pyrexia (23.6 percent), fatigue (22.9 percent), neutropenia (21.7 percent), diarrhea (20.4 percent), injection site reaction (19.7%), nausea (19.7%), and anemia (17.8%). The most common Grade 3 or 4 treatment-emergent adverse events (greater than or equal to 5 percent) included neutropenia (14.6 percent), anemia (10.2 percent), neutrophil count decrease (6.4 percent), and thrombocytopenia (5.7 percent). The observed Grade 3 CRS was low (2.5 percent). No Grade 4/5 CRS was observed.

Epcoritamab is being co-developed by Genmab and AbbVie as part of the companies’ broad oncology collaboration. The companies remain committed to evaluating epcoritamab as a monotherapy, and in combination, across lines of therapy for a variety of hematologic malignancies, including an ongoing phase 3, open-label, randomized trial evaluating epcoritamab as a monotherapy in patients with relapsed/refractory DLBCL (NCT: 04628494).

About Large B-cell Lymphoma (LBCL)
LBCL is a fast-growing type of non-Hodgkin’s lymphoma (NHL) – a cancer that develops in the lymphatic system – that affects B-cell lymphocytes, a type of white blood cell. There are an estimated 150,000 new LBCL cases each year globally. LBCL includes DLBCL, which is the most common type of NHL worldwide and accounts for approximately 31 percent of all NHL cases.1,2,3,4

About the EPCORE NHL-1 Trial
EPCORE NHL-1 an open-label, multi-center safety and preliminary efficacy trial of epcoritamab including a phase 1 first-in-human, dose escalation part; a phase 2 expansion part; and an optimization part. The trial was designed to evaluate subcutaneous epcoritamab in patients with relapsed, progressive or refractory CD20+ mature B-NHL, including LBCL and DLBCL. The dose escalation findings, which determined the recommended phase 2 dose, were published in The Lancet in 2021. In the phase 2 expansion part, additional patients are treated with epcoritamab to further explore the safety and efficacy of epcoritamab in three cohorts of patients with different types of relapsed/refractory B-NHLs who had limited therapeutic options.

The primary endpoint of the phase 2 expansion part was ORR as assessed by an IRC. Secondary efficacy endpoints included duration of response, complete response rate, progression-free survival, and time to response as determined by the Lugano criteria. Overall survival, time to next therapy, and rate of minimal residual disease negativity were evaluated as secondary efficacy endpoints.

About Epcoritamab
Epcoritamab is an investigational IgG1-bispecific antibody created using Genmab’s proprietary DuoBody technology. Genmab’s DuoBody-CD3 technology is designed to direct cytotoxic T cells selectively to elicit an immune response towards target cell types. Epcoritamab is designed to simultaneously bind to CD3 on T cells and CD20 on B-cells and induces T cell mediated killing of CD20+ cells.5 Epcoritamab was developed with selective, silencing mutations that may limit systemic, non-specific activity. CD20 is expressed on B-cells and a clinically validated therapeutic target in many B-cell malignancies, including diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma and chronic lymphocytic leukemia.6,7 Epcoritamab is being co-developed by Genmab and AbbVie as part of the companies’ broad oncology collaboration.