Thermo Fisher’s NGS assay receives FDA approval as a companion diagnostic for ZEGFROVY and for tumor profiling

July 7, 2025

Thermo Fisher Scientific announced the U.S. Food and Drug Administration (FDA) has approved the Oncomine Dx Express Test on the Ion Torrent Genexus Dx Integrated Sequencer as an in vitro diagnostic (IVD) assay for use as a companion diagnostic (CDx) for Dizal’s ZEGFROVY (sunvozertinib) and in tumor profiling.

This approval brings rapid next-generation sequencing (NGS) to decentralized clinical settings closer to where patients receive care. With the ability to deliver essential genomic insights in as little as 24 hours*, this approval helps advance the accessibility of precision oncology tools and enables more timely decision making. 

The Oncomine Dx Express Test is intended for use as a companion diagnostic for ZEGFROVY (sunvozertinib), a targeted therapy from Dizal, to identify patients with non-small cell lung cancer (NSCLC) harboring EGFR exon 20 insertion mutations. In addition, the test has been approved for tumor profiling in solid tumors and detects cancer mutations with evidence of clinical significance and potential clinical significance across 46 genes.  

Biodesix, one of Thermo Fisher’s collaborators in the validation of Oncomine Dx Express Test on the Genexus Dx Integrated Sequencer, will be the first lab to launch testing services.  

ZEGFROVY, developed by Dizal, was granted FDA accelerated approval following Breakthrough Therapy designation and Priority Review for the treatment of NSCLC patients with EGFR exon 20 insertion mutations. With the approval of the Oncomine Dx Express Test on the Genexus Dx Integrated Sequencer as a companion diagnostic for this therapy, clinicians can now quickly identify eligible patients – supporting earlier intervention and expanding access to targeted therapy. 

To learn more about the approval, please visit thermofisher.com/oncomine-express-test

* Timing varies by number of samples and type of run. 

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