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Merck declares topline results from Phase 3 trial of Welirag
Rahway: Merck, known as MSD outside of the United States and Canada, has announced topline results from LITESPARK-005, the first positive Phase 3 trial investigating WELIREG, Merck’s oral hypoxia-inducible factor-2 alpha (HIF-2α) inhibitor.
LITESPARK-005 is evaluating WELIREG for the treatment of adult patients with advanced renal cell carcinoma (RCC) that has progressed following PD-1/L1 checkpoint inhibitor and vascular endothelial growth factor-tyrosine kinase inhibitor (VEGF-TKI) therapies. In the trial, WELIREG showed a statistically significant and clinically meaningful improvement in progression-free survival (PFS) compared to everolimus, based on a pre-specified interim analysis conducted by an independent Data Monitoring Committee. A statistically significant improvement in the trial’s key secondary endpoint of objective response rate (ORR) was also demonstrated. A trend toward improvement in overall survival (OS), a dual primary endpoint, was observed; however, this result did not reach statistical significance. OS will be tested at a subsequent analysis. The safety profile of WELIREG in this trial was consistent with that observed in previously reported studies. Results will be presented at an upcoming medical meeting and shared with regulatory authorities.
“Patients with advanced RCC face low survival rates, and for those whose cancer progresses following PD-1/L1 and VEGF-TKI therapies, there is a need for new treatment options that can reduce their risk of disease progression or death,” said Dr. Marjorie Green, senior vice president and head of late-stage oncology, global clinical development, Merck Research Laboratories. “This is the first Phase 3 trial to show positive results in advanced RCC following these therapies and the first new mechanism to demonstrate potential in advanced RCC in recent years. We look forward to discussing these results with health authorities.”
WELIREG was the first HIF-2α inhibitor therapy approved in the U.S. and is currently approved in the U.S., Great Britain, Canada and several other countries for the treatment of adult patients with von Hippel-Lindau (VHL) disease who require therapy for associated RCC, central nervous system hemangioblastomas, or pancreatic neuroendocrine tumors, not requiring immediate surgery, based on ORR and duration of response (DOR) data from the Phase 2 LITESPARK-004 trial. Additional applications are currently under regulatory agency review worldwide based on LITESPARK-004.
LITESPARK-005 is part of a comprehensive development program for WELIREG comprised of four Phase 3 trials in RCC, including LITESPARK-011 and LITESPARK-012, evaluating WELIREG in the second-line and treatment-naïve advanced disease settings, and LITESPARK-022, evaluating WELIREG in the adjuvant setting.
Read also: Ginkgo Bioworks, Merck collaborate to improve biologic manufacturing
Ruchika Sharma joined Medical Dialogue as an Correspondent for the Business Section in 2019. She covers all the updates in the Pharmaceutical field, Policy, Insurance, Business Healthcare, Medical News, Health News, Pharma News, Healthcare and Investment. She has completed her B.Com from Delhi University and then pursued postgraduation in M.Com. She can be contacted at editorial@medicaldialogues.in Contact no. 011-43720751