Merck’s Investigational Zilovertamab Vedotin in Combination With R-CHP Demonstrates Complete Response Rate of 100% at 1.75 mg/kg Dose in Phase 2 Trial of Previously Untreated Patients With Diffuse Large B-Cell Lymphoma
RAHWAY, N.J.--(BUSINESS WIRE) December 8, 2024 -- Merck (NYSE: MRK), known as MSD outside of the United States and Canada, today announced the first presentation of data from the Phase 2 waveLINE-007 trial evaluating zilovertamab vedotin, Merck’s investigational antibody drug conjugate (ADC) that targets receptor tyrosine kinase-like orphan receptor 1 (ROR1), in combination with cyclophosphamide, doxorubicin and prednisone plus rituximab (R-CHP) for the treatment of patients with previously untreated diffuse large B-cell lymphoma (DLBCL). At a pre-planned analysis, zilovertamab vedotin in combination with R-CHP achieved a 100% (n=15) complete response (CR) rate in patients treated with zilovertamab vedotin at 1.75 mg/kg. Based on the data, the study has established 1.75 mg/kg as the recommended Phase 3 dose of zilovertamab vedotin. These data are being presented for the first time today in an oral presentation (Abstract #578) at the 66 th American Society of Hematology (ASH) Annual Meeting and Exposition.
“There is a need for additional first-line treatment options to help patients with diffuse large B-cell lymphoma, since, unfortunately, approximately 40% still experience relapsed or refractory disease after initial treatment with the current standard of care,” said Dr. Muhit Ozcan, the study’s principal investigator, Ankara University School of Medicine. “These data from the Phase 2 waveLINE-007 trial are promising and support further research in the first-line setting in a larger patient population to help address this significant unmet need for patients.”
“We are pleased to see these early positive results from the Phase 2 waveLINE-007 trial, in which zilovertamab vedotin demonstrated a highly promising response rate and a manageable safety profile in combination with standard of care,” said Dr. Gregory Lubiniecki, vice president, oncology clinical research, Merck Research Laboratories. “We look forward to advancing our research of this investigational ROR1-directed antibody drug conjugate, which we believe has strong potential in multiple hematologic malignancies.”
As announced, data from more than 20 abstracts are being presented from across a broad range of hematologic malignancies from Merck’s hematology pipeline, which includes a diverse range of investigational assets with novel modalities, at the 66 th ASH Annual Meeting and Exposition.
Study design and additional data from waveLINE-007
WaveLINE-007 is a non-randomized, open-label Phase 2 trial (ClinicalTrials.gov, NCT05406401 ) evaluating zilovertamab vedotin (MK-2140) in combination with R-CHP in patients with previously untreated DLBCL. The primary endpoints are safety (number of patients with dose limiting toxicity, adverse events and discontinuation due to adverse events) and CR rate based on investigator review per Lugano Response Criteria. Secondary endpoints include objective response rate (ORR) and duration of response (DOR) per Lugano Response Criteria. As of data cut-off, 36 patients were enrolled in the study to receive zilovertamab vedotin plus R-CHP intravenously on day 1 of each 21-day cycle (Q3W) for up to eight cycles. The treatment arms of the study included:
The efficacy results showed a CR was achieved in combination with R-CHP in 100% (n=15) of patients receiving the 1.75 mg/kg dose of zilovertamab vedotin (CI: 95%, 78.2-100.0), 93.3% (n=14) of patients receiving the 2.0 mg/kg dose (CI: 95%, 68.1-99.8) and 100% (n=6) of patients receiving the 2.25 mg/kg dose (CI: 95%, 54.1-100.0). The total CR rate at the end of treatment was 97.2% (CI: 95%, 85.5-99.9). The median follow-up for all patients was 17.6 months (range, 7.1-24.6). The ORR was 100% (CI: 95%, 78.2-100.0) for patients receiving the 1.75 mg/kg dose, 93.3% (CI: 95%, 68.1-99.8) for patients receiving the 2.0 mg/kg dose, and 100% (CI: 95%, 54.1-100.0) for patients receiving the 2.25 mg/kg dose, all in combination with R-CHP. The median DOR has not been reached for all patients, and the total 12-month DOR was 93.5%. Based on the data, the recommended zilovertamab vedotin dose was determined to be 1.75 mg/kg.
Serious treatment-related adverse events (TRAEs) occurred in 11% (n=4) of all patients (1.75 mg/kg [n=1], 2.0 mg/kg [n=1], 2.25 mg/kg [n=2]). Grade 3-4 TRAEs occurred in 58% (n=21) of all patients. The most common of these events were neutropenia, nausea, anemia and diarrhea.
About diffuse large B-cell lymphoma
Lymphoma is cancer beginning in the lymphatic system – the network of organs, vessels and tissues that protects the body from infection. There are many subtypes of lymphoma, which are often categorized into two main types – Hodgkin lymphoma and non-Hodgkin lymphoma (NHL). DLBCL, the most common form of NHL, is derived from white blood cells that grow rapidly and uncontrollably, enlarging the lymph nodes and often migrating to other parts of the body. DLBCL accounts for approximately 25-30% of all non-Hodgkin lymphomas worldwide. In the U.S., it is estimated that approximately 25,000 patients are diagnosed with DLBCL each year. The five-year relative survival rate for DLBCL is 60-70%.
About zilovertamab vedotin (MK-2140)
Zilovertamab vedotin is an investigational ADC that targets ROR1. ROR1 is a transmembrane protein that is overexpressed in multiple hematologic malignancies. Merck is committed to research with zilovertamab vedotin across B-cell malignancies and is establishing a robust program of clinical trials under the name waveLINE. The waveLINE program includes a Phase 2/3 study in patients with relapsed or refractory DLBCL (waveLINE-003, NCT05139017 ) and a Phase 3 study in treatment naïve patients with DLBCL (waveLINE-010, NCT06717347).
About Merck in hematology
Merck is committed to advancing innovation and care for people with hematologic neoplasms and malignancies. Building on its leadership in oncology, the company has a broad clinical development program that evaluates novel mechanisms of action to address longstanding unmet needs for patients with hematologic disorders. Among Merck’s research efforts are studies evaluating multiple investigational medicines as monotherapy or in combination with other therapies across a range of hematologic neoplasms and malignancies.
Merck’s focus on cancer
Every day, we follow the science as we work to discover innovations that can help patients, no matter what stage of cancer they have. As a leading oncology company, we are pursuing research where scientific opportunity and medical need converge, underpinned by our diverse pipeline of more than 25 novel mechanisms. With one of the largest clinical development programs across more than 30 tumor types, we strive to advance breakthrough science that will shape the future of oncology. By addressing barriers to clinical trial participation, screening and treatment, we work with urgency to reduce disparities and help ensure patients have access to high-quality cancer care. Our unwavering commitment is what will bring us closer to our goal of bringing life to more patients with cancer. For more information, visit https://www.merck.com/research/oncology.
About Merck
At Merck, known as MSD outside of the United States and Canada, we are unified around our purpose: We use the power of leading-edge science to save and improve lives around the world. For more than 130 years, we have brought hope to humanity through the development of important medicines and vaccines. We aspire to be the premier research-intensive biopharmaceutical company in the world – and today, we are at the forefront of research to deliver innovative health solutions that advance the prevention and treatment of diseases in people and animals. We foster a diverse and inclusive global workforce and operate responsibly every day to enable a safe, sustainable and healthy future for all people and communities. For more information, visit www.merck.com and connect with us on X (formerly Twitter), Facebook, Instagram, YouTube and LinkedIn.
Forward-Looking Statement of Merck & Co., Inc., Rahway, N.J., USA
This news release of Merck & Co., Inc., Rahway, N.J., USA (the “company”) includes “forward-looking statements” within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. These statements are based upon the current beliefs and expectations of the company’s management and are subject to significant risks and uncertainties. There can be no guarantees with respect to pipeline candidates that the candidates will receive the necessary regulatory approvals or that they will prove to be commercially successful. If underlying assumptions prove inaccurate or risks or uncertainties materialize, actual results may differ materially from those set forth in the forward-looking statements.
Risks and uncertainties include but are not limited to, general industry conditions and competition; general economic factors, including interest rate and currency exchange rate fluctuations; the impact of pharmaceutical industry regulation and health care legislation in the United States and internationally; global trends toward health care cost containment; technological advances, new products and patents attained by competitors; challenges inherent in new product development, including obtaining regulatory approval; the company’s ability to accurately predict future market conditions; manufacturing difficulties or delays; financial instability of international economies and sovereign risk; dependence on the effectiveness of the company’s patents and other protections for innovation products; and the exposure to litigation, including patent litigation, and/or regulatory actions.
The company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise. Additional factors that could cause results to differ materially from those described in the forward-looking statements can be found in the company’s Annual Report on Form 10-K for the year ended December 31, 2023 and the company’s other filings with the Securities and Exchange Commission (SEC) available at the SEC’s Internet site (www.sec.gov).
Source: Merck & Co., Inc.
Posted : 2024-12-09 12:00
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