Results
Promega Corporation
11/11/2025 | Press release | Distributed by Public on 11/11/2025 01:15
FDA Approves Promega OncoMate® MSI Dx Analysis System as Companion Diagnostic for KEYTRUDA® in Combination with LENVIMA® In Advanced Endometrial Carcinoma
Promega MSI technology will aid in the identification of patients with microsatellite stable (MSS) endometrial carcinoma
Madison, WI USA. (November 11, 2025)
The U.S. Food and Drug Administration (FDA) has approved the Promega OncoMate® MSI Dx Analysis System as a companion diagnostic designed to identify patients with microsatellite stable (MSS; defined as not MSI-high [not MSI-H]) endometrial carcinoma who may benefit from treatment with KEYTRUDA® (pembrolizumab), Merck's anti-PD-1 therapy, plus LENVIMA® (lenvatinib), the orally available multiple receptor tyrosine kinase inhibitor discovered by Eisai. This is the first Promega companion diagnostic to receive FDA approval.
OncoMate® MSI Dx Analysis System is a PCR-based assay designed to evaluate MSI status in tumor tissue. MSI status can be used to guide treatment decisions and support precision oncology strategies in endometrial carcinoma.
"This approval underscores the critical role diagnostics play in accurately matching the right patients, at the right time with the right therapy," says Alok Sharma, Global Clinical Market Director at Promega. "We are committed to delivering reliable tools that guide clinical decisions and help improve patient outcomes."
The approval was supported through a collaboration with Merck, which markets KEYTRUDA plus LENVIMA in collaboration with Eisai Co., Ltd. Together, the companies are working to advance personalized medicine and expand access to diagnostics that enable informed therapeutic choices.
OncoMate® MSI Dx Analysis System was previously cleared by the FDA as the first PCR-based molecular diagnostic for identifying colorectal cancer patients who may benefit from additional testing to diagnose Lynch syndrome. This approval applies to the United States and its territories. Promega MSI technology has received additional regulatory approvals in China and the European Union.
KEYTRUDA® is a registered trademark of Merck Sharp & Dohme LLC, a subsidiary of Merck & Co., Inc., Rahway, NJ, USA.
About Promega Corporation
Promega Corporation is a leader in providing innovative solutions and technical support to the life sciences industry. The company's portfolio of over 4,000 products supports a range of life science work across areas such as cell biology; DNA, RNA and protein analysis; drug development; human identification and molecular diagnostics. These tools and technologies have grown in their application over the last 45 years and are used today by scientists and technicians in labs for academic and government research, forensics, pharmaceuticals, clinical diagnostics and agricultural and environmental testing. Promega is headquartered in Madison, WI, USA with branches in 16 countries and over 50 global distributors.
Learn more about Promega MSI technology
Promega Corporation published this content on November 11, 2025, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on November 11, 2025 at 07:15 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]