NanoString Technologies president and CEO Brad Gray noted that with Canadian market authorization, which mirrors the CE-marked Prosigna assay approved for the EU and Israel, we are enabling clinical labs in Canada to generate critical information to help doctors and their patients make important breast cancer treatment decisions.

"We will continue to seek regulatory approvals for Prosigna, expanding its availability worldwide and providing greater access to sophisticated genomic tests for patients battling breast cancer regardless of their geographic location," Gray added.

Prosigna is an in vitro diagnostic breast cancer assay run on the nCounter Dx analysis system that assesses the gene expression profile of cells found in a woman’s breast cancer tissue.

This information is then used to identify intrinsic subtype of the tumor and assess the risk of distant recurrence of disease in postmenopausal women with hormone receptor-positive (HR+) early-stage breast cancer.

The Prosigna assay is the first diagnostic test approved by Health Canada for use in local, qualified clinical laboratories, enabling oncologists and pathologists to meet the diagnostic needs of patients with breast cancer without sending tissue samples outside of Canada.

Canadian research institutes played a critical role in the discovery and development of the PAM50 gene signature, a gene set that serves as the basis for the Prosigna assay and is used for gene expression based subtyping.

The Prosigna assay was validated in two clinical studies, including the TransATAC and ABCSG-8 studies, which included more than 2,400 patient samples.

The Prosigna assay offers key features to molecular technicians and clinicians in Canada, including identification of intrinsic subtype and individualized estimate of distant recurrence risk, all-in-one assay consumables, including RNA extraction kits, allowing laboratories to test as little as a single section of formalin-fixed paraffin embedded (FFPE) tumor tissue, high-throughput workflow allowing each nCounter Dx Analysis System to process up to 30 patient samples per eight hour work day.