Thursday, 14 November 2019

Promega enters global collaboration with Merck

08 November 2019 | News

To Develop Microsatellite Instability (MSI) Companion Diagnostic for Use with KEYTRUDA®

Promega Corporation has announced it has entered into a global collaboration with Merck, known as MSD outside the United States and Canada, to develop Promega’s microsatellite instability (MSI) technology as an on-label, solid tumor companion diagnostic (CDx) for use with Merck’s anti-PD-1 therapy, KEYTRUDA® (pembrolizumab). The global collaboration will initially seek regulatory approval for the Promega MSI CDx in the United States and China. Plans to seek approvals in additional territories may follow.

Promega MSI technology has been validated in labs around the world to characterize solid tumor MSI status. MSI testing functionally measures the genomic accumulation of insertion or deletion (INDEL) errors caused by a deficient mismatch-repair system (dMMR) that occurs in certain types of solid tumors, and this screening may be used to better characterize tumors and guide therapeutic choices for MSI-High cancer types.

Tumors with MSI-High status have been shown to respond to immune checkpoint inhibitor (ICI) therapies. This outcome may be explained by MSI-driven tumor expression of mutation-associated neoantigens (MANA) that are believed to cause immune cell infiltration into the tumor microenvironment. Tumor induced inhibition of immune cell activity can be overcome with ICI therapies, allowing for tumor cell destruction by the immune cells.

Promega MSI technology is one of the leading standard tests for MSI status detection in research laboratories and recently achieved innovation status and priority review by the National Medical Products Administration (NMPA) in China. It has been used extensively in clinical research for more than 15 years and is supported by more than 140 peer-reviewed publications. Promega continues to advance the promise of MSI technology globally. In addition to the Merck collaboration announcement, Promega intends to seek regulatory clearance for an MSI in vitro diagnostic (IVD) test in the United States, China and Europe. These products are intended to launch in the first half of 2020 in the United States, China and Europe.

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