Genmab A/S (Nasdaq: GMAB):

  • Results show 96 percent overall response rate (ORR), 87 percent complete response (CR), and 80 percent 21-month progression-free survival (PFS) in patients with relapsed or refractory (R/R) follicular lymphoma (FL) following treatment with epcoritamab plus lenalidomide + rituximab (R2)
  • Long-term follow-up results demonstrated strong and durable efficacy, with an estimated two-year overall survival (OS) rate of 90 percent
  • Results follow recent breakthrough therapy designation (BTD) granted by U.S. Food and Drug Administration (FDA) and support ongoing Phase 3 EPCORE® FL-1 trial evaluating epcoritamab + R2 in patients with R/R FL

Genmab A/S (Nasdaq: GMAB) today announced new results from the Phase 1b/2 EPCORE® NHL-2 trial evaluating fixed-duration epcoritamab, a T-cell engaging bispecific antibody administered subcutaneously, plus lenalidomide + rituximab (R2) in adult patients with relapsed or refractory (R/R) follicular lymphoma (FL). The results demonstrated an overall response rate (ORR) of 96 percent and a complete response (CR) rate of 87 percent among 111 patients after a median follow-up of two years. Additionally, the study showed an estimated 21-month progression-free survival (PFS) rate of 80 percent and a two-year overall survival (OS) rate of 90 percent. The data (Abstract #342) were shared today during an oral presentation at the 66th Annual Meeting and Exposition of the American Society of Hematology (ASH).

“Follicular lymphoma is incurable in most patients, and patients living with relapsed or refractory follicular lymphoma, particularly those with high-risk features, are in need of additional therapeutic options,” said Lorenzo Falchi, MD, Lymphoma Specialist, Department of Medicine, Memorial Sloan Kettering Cancer Center.i “The durable responses seen in the EPCORE NHL-2 trial are encouraging and support the ongoing investigation of epcoritamab in combination with the standard regimen of rituximab plus lenalidomide.”

Additional data from the study showed an estimated 89 percent of complete responders to the combination therapy remained in CR at 18 months (duration of CR; DoCR).

With the majority of patients being enrolled and treated during the global COVID-19 pandemic, COVID-19 was reported in 57 percent of patients and led to epcoritamab discontinuation in 13 percent of patients. Five cases of COVID-19 led to fatal treatment-emergent adverse events (TEAEs; COVID-19, n=3; COVID-19 pneumonia, n=2). The other most common TEAEs were neutropenia (62 percent) and cytokine release syndrome (CRS; 51 percent). CRS events with the 2-step step-up dose regimen were mostly low grade (38 percent Grade 1, 12 percent Grade 2, 2 percent Grade 3) and primarily occurred following the first full dose. All CRS cases resolved. One case of immune effector cell-associated neurotoxicity syndrome (ICANS) was reported (Grade 1). The CRS and ICANS cases did not lead to treatment discontinuation.

“The long-term results for epcoritamab combination therapy presented at ASH are very encouraging for patients facing the challenges of relapsed or refractory follicular lymphoma,” said Dr. Judith Klimovsky, Executive Vice President & Chief Development Officer, Genmab. “These data reinforce the potential of epcoritamab in follicular lymphoma across treatment lines and support our goal to develop epcoritamab as a potential core therapy for the treatment of B-cell malignancies, both as a monotherapy and with different combinations of standards of care across different lines of therapy and patient populations. We look forward to further evaluating this combination in the ongoing Phase 3 EPCORE FL-1 trial.”

The U.S. Food and Drug Administration (FDA) recently granted breakthrough therapy designation (BTD) for epcoritamab plus R2 for the treatment of adult patients with R/R FL who have received at least one prior line of therapy. Epcoritamab in combination with R2 is being studied further in the ongoing, randomized, Phase 3 EPCORE FL-1 trial (NCT05409066).

Use of epcoritamab + R2 in R/R FL is not approved in the U.S. or in the EU or in any other territory. The safety and efficacy of epcoritamab for use as a combination therapy in FL have not been established.

About Follicular Lymphoma (FL)

FL is typically an indolent (or slow-growing) form of non-Hodgkin's lymphoma (NHL) that arises from B-lymphocytes and is the second most common form of NHL accounting for 20-30 percent of all cases.ii About 15,000 people develop FL each year in the U.S.iii and it is considered incurable with current standard of care therapies.iv Patients often relapse and, with each relapse the remission and time to next treatment is shorter.v Over time, transformation to diffuse large B-cell lymphoma (DLBCL), an aggressive form of NHL associated with poor survival outcomes, can occur in more than 25 percent of FL patients.vi

About the EPCORE® NHL-2 Trial

EPCORE® NHL-2 is a Phase 1b/2 open-label interventional trial to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics/biomarkers, immunogenicity, and preliminary efficacy of epcoritamab as a monotherapy and in combination with other standard of care agents in patients with B-cell non-Hodgkin’s lymphoma (B-NHL). The trial consists of two parts: Part 1 (Dose Escalation) and Part 2 (Dose Expansion). The primary objective of Part 1 is safety, and the primary goal of Part 2 is preliminary efficacy. Arm 2 of the trial is epcoritamab + rituximab and lenalidomide (R2) in participants with relapsed/refractory (R/R) follicular lymphoma (FL). More information on this trial can be found at https://www.clinicaltrials.gov/ (NCT: 04663347).

About Epcoritamab

Epcoritamab is an IgG1-bispecific antibody created using Genmab's proprietary DuoBody® technology and administered subcutaneously. Genmab's DuoBody-CD3 technology is designed to direct cytotoxic T cells selectively to elicit an immune response toward 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.vii

Epcoritamab (approved under the brand name EPKINLY® in the U.S. and Japan, and TEPKINLY® in the EU) has received regulatory approval in certain lymphoma indications in several territories. Epcoritamab is being co-developed by Genmab and AbbVie as part of the companies' oncology collaboration. The companies will share commercial responsibilities in the U.S. and Japan, with AbbVie responsible for further global commercialization. Both companies will pursue additional international regulatory approvals for the investigational R/R FL indication and additional approvals for the R/R DLBCL indication.

Genmab and AbbVie continue to evaluate the use of epcoritamab as a monotherapy, and in combination, across lines of therapy in a range of hematologic malignancies. This includes five ongoing Phase 3, open-label, randomized trials including a trial evaluating epcoritamab as a monotherapy in patients with R/R DLBCL compared to investigators choice chemotherapy (NCT04628494), a trial evaluating epcoritamab in combination with R-CHOP in adult patients with newly diagnosed DLBCL (NCT05578976), a trial evaluating epcoritamab in combination with rituximab and lenalidomide (R2) in patients with R/R FL (NCT05409066), a trial evaluating epcoritamab in combination with rituximab and lenalidomide (R2) compared to chemoimmunotherapy in patients with previously untreated FL (NCT06191744), and a trial evaluating epcoritamab in combination with lenalidomide compared to chemotherapy infusion in patients with R/R DLBCL (NCT06508658). The safety and efficacy of epcoritamab has not been established for these investigational uses. Please visit www.clinicaltrials.gov for more information.

EPKINLY® (epcoritamab-bysp) U.S. INDICATIONS & IMPORTANT SAFETY INFORMATION

What is EPKINLY?

EPKINLY is a prescription medicine used to treat adults with certain types of diffuse large B-cell lymphoma (DLBCL), high-grade B-cell lymphoma, or follicular lymphoma (FL) that has come back or that did not respond to previous treatment after receiving 2 or more treatments. EPKINLY is approved based on patient response data. Studies are ongoing to confirm the clinical benefit of EPKINLY. It is not known if EPKINLY is safe and effective in children.

Important Warnings—EPKINLY can cause serious side effects, including:

  • Cytokine release syndrome (CRS), which is common during treatment with EPKINLY and can be serious or life-threatening. To help reduce your risk of CRS, you will receive EPKINLY on a step-up dosing schedule (when you receive 2 or 3 smaller step-up doses of EPKINLY before your first full dose during your first cycle of treatment), and you may also receive other medicines before and for 3 days after receiving EPKINLY. If your dose of EPKINLY is delayed for any reason, you may need to repeat the step-up dosing schedule.
  • Neurologic problems that can be life-threatening and lead to death. Neurologic problems may happen days or weeks after you receive EPKINLY.

People with DLBCL or high-grade B-cell lymphoma should be hospitalized for 24 hours after receiving their first full dose of EPKINLY on day 15 of cycle 1 due to the risk of CRS and neurologic problems.

Tell your healthcare provider or get medical help right away if you develop a fever of 100.4°F (38°C) or higher; dizziness or lightheadedness; trouble breathing; chills; fast heartbeat; feeling anxious; headache; confusion; shaking (tremors); problems with balance and movement, such as trouble walking; trouble speaking or writing; confusion and disorientation; drowsiness, tiredness or lack of energy; muscle weakness; seizures; or memory loss. These may be symptoms of CRS or neurologic problems. If you have any symptoms that impair consciousness, do not drive or use heavy machinery or do other dangerous activities until your symptoms go away.

EPKINLY can cause other serious side effects, including:

  • Infections that may lead to death. Your healthcare provider will check you for signs and symptoms of infection before and during treatment and treat you as needed if you develop an infection. You should receive medicines from your healthcare provider before you start treatment to help prevent infection. Tell your healthcare provider right away if you develop any symptoms of infection during treatment, including fever of 100.4°F (38°C) or higher, cough, chest pain, tiredness, shortness of breath, painful rash, sore throat, pain during urination, or feeling weak or generally unwell.
  • Low blood cell counts, which can be serious or severe. Your healthcare provider will check your blood cell counts during treatment. EPKINLY may cause low blood cell counts, including low white blood cells (neutropenia), which can increase your risk for infection; low red blood cells (anemia), which can cause tiredness and shortness of breath; and low platelets (thrombocytopenia), which can cause bruising or bleeding problems.

Your healthcare provider will monitor you for symptoms of CRS, neurologic problems, infections, and low blood cell counts during treatment with EPKINLY. Your healthcare provider may temporarily stop or completely stop treatment with EPKINLY if you develop certain side effects.

Before you receive EPKINLY, tell your healthcare provider about all your medical conditions, including if you have an infection, are pregnant or plan to become pregnant, or are breastfeeding or plan to breastfeed. If you receive EPKINLY while pregnant, it may harm your unborn baby. If you are a female who can become pregnant, your healthcare provider should do a pregnancy test before you start treatment with EPKINLY and you should use effective birth control (contraception) during treatment and for 4 months after your last dose of EPKINLY. Tell your healthcare provider if you become pregnant or think that you may be pregnant during treatment with EPKINLY. Do not breastfeed during treatment with EPKINLY and for 4 months after your last dose of EPKINLY.

In DLBCL or high-grade B-cell lymphoma, the most common side effects of EPKINLY include CRS, tiredness, muscle and bone pain, injection site reactions, fever, stomach-area (abdominal) pain, nausea, and diarrhea. The most common severe abnormal laboratory test results include decreased white blood cells, decreased red blood cells, and decreased platelets.

In follicular lymphoma the most common side effects of EPKINLY include injection site reactions, CRS, COVID-19, tiredness, upper respiratory tract infections, muscle and bone pain, rash, diarrhea, fever, cough, and headache. The most common severe abnormal laboratory test results include decreased white blood cells and decreased red blood cells.

These are not all of the possible side effects of EPKINLY. Call your doctor for medical advice about side effects. You are encouraged to report side effects to the FDA at (800) FDA-1088 or www.fda.gov/medwatch or to Genmab US, Inc. at 1-855-4GENMAB (1-855-443-6622).

Please see Full Prescribing Information and Medication Guide, including Important Warnings.

Globally, prescribing information varies; refer to the individual country product label for complete information.

About Genmab

Genmab is an international biotechnology company with a core purpose of guiding its unstoppable team to strive toward improving the lives of patients with innovative and differentiated antibody therapeutics. For 25 years, its passionate, innovative and collaborative team has invented next-generation antibody technology platforms and leveraged translational, quantitative and data sciences, resulting in a proprietary pipeline including bispecific T-cell engagers, antibody-drug conjugates, next-generation immune checkpoint modulators and effector function-enhanced antibodies. By 2030, Genmab’s vision is to transform the lives of people with cancer and other serious diseases with knock-your-socks-off (KYSO®) antibody medicines.

Established in 1999, Genmab is headquartered in Copenhagen, Denmark, with international presence across North America, Europe and Asia Pacific. For more information, please visit Genmab.com and follow us on LinkedIn and X.

This Media Release contains forward looking statements. The words “believe,” “expect,” “anticipate,” “intend” and “plan” and similar expressions identify forward looking statements. Actual results or performance may differ materially from any future results or performance expressed or implied by such statements. The important factors that could cause our actual results or performance to differ materially include, among others, risks associated with preclinical and clinical development of products, uncertainties related to the outcome and conduct of clinical trials including unforeseen safety issues, uncertainties related to product manufacturing, the lack of market acceptance of our products, our inability to manage growth, the competitive environment in relation to our business area and markets, our inability to attract and retain suitably qualified personnel, the unenforceability or lack of protection of our patents and proprietary rights, our relationships with affiliated entities, changes and developments in technology which may render our products or technologies obsolete, and other factors. For a further discussion of these risks, please refer to the risk management sections in Genmab’s most recent financial reports, which are available on www.genmab.com and the risk factors included in Genmab’s most recent Annual Report on Form 20-F and other filings with the U.S. Securities and Exchange Commission (SEC), which are available at www.sec.gov. Genmab does not undertake any obligation to update or revise forward looking statements in this Media Release nor to confirm such statements to reflect subsequent events or circumstances after the date made or in relation to actual results, unless required by law.

Genmab A/S and/or its subsidiaries own the following trademarks: Genmab®; the Y-shaped Genmab logo®; Genmab in combination with the Y-shaped Genmab logo®; HuMax®; DuoBody®; HexaBody®; DuoHexaBody®, HexElect® and KYSO™. EPCORE®, EPKINLY®, TEPKINLY® and their designs are trademarks of AbbVie Biotechnology Ltd.

i Dr. Falchi has financial interests related to Genmab and AbbVie. ii Lymphoma Research Foundation official website. https://lymphoma.org/aboutlymphoma/nhl/fl/. Accessed November 2024. iii Leukemia & Lymphoma Society. https://www.lls.org/research/follicular-lymphoma-fl. Accessed November 2024. iv Ghione P, Palomba ML, Ghesquieres H, et al. Treatment patterns and outcomes in relapsed/refractory follicular lymphoma: results from the international SCHOLAR-5 study. Haematologica. 2023;108(3):822-832. doi: 10.3324/haematol.2022.281421. v Rivas-Delgado A, Magnano L, Moreno-Velázquez M, et al. Response duration and survival shorten after each relapse in patients with follicular lymphoma treated in the rituximab era. Br J Haematol. 2018;184(5):753-759. doi:10.1111/bjh.15708. vi Al-Tourah AJ, Gill KK, Chhanabhai M, et al. Population-based analysis of incidence and outcome of transformed non-Hodgkin's lymphoma. J Clin Oncol. 2008 Nov 10;26(32):5165-9. doi: 10.1200/JCO.2008.16.0283. Epub 2008 Oct 6. PMID: 18838711. vii Engelberts PJ, et al. DuoBody-CD3xCD20 Induces Potent T-Cell-Mediated Killing of Malignant B Cells in Preclinical Models and Provides Opportunities for Subcutaneous Dosing. EBioMedicine. 2020;52:102625. doi: 10.1016/j.ebiom.2019.102625.

David Freundel, Senior Director, Global R&D & Portfolio Communications T: +1 609 430 2481; E: dafr@genmab.com

Andrew Carlsen, Vice President, Head of Investor Relations T: +45 3377 9558; E: acn@genmab.com

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