Agilent Technologies Inc. (NYSE: A) today announced that it has received U.S. Food and Drug Administration (FDA) approval for PD-L1 IHC 22C3 pharmDx, Code SK006, as a companion diagnostic to aid in identifying patients with esophageal or gastroesophageal junction (GEJ) carcinoma who may be eligible for treatment with KEYTRUDA® (pembrolizumab), Merck’s anti-PD-1 therapy.

Foundation Medicine, Inc., a global, patient-focused precision medicine company, today announced that it has received approvals from the U.S. Food and Drug Administration (FDA) for FoundationOne®CDx and FoundationOne®Liquid CDx to be used as companion diagnostics for Pfizer’s TALZENNA® (talazoparib) in combination with XTANDI® (enzalutamide) to identify patients with homologous recombination repair (HRR) gene-mutated metastatic castration-resistant prostate cancer (mCRPC). TALZENNA is first and only PARP inhibitor approved for use with an existing standard of care (XTANDI) for adult patients with both BRCA mutated and non-BRCA HRR gene-mutated mCRPC.

Tempus AI, Inc. (NASDAQ: TEM), a technology company leading the adoption of AI to advance precision medicine, today announced that the U.S. Food and Drug Administration (FDA) has granted approval for a tumor-only indication for its xT CDx next-generation sequencing platform. With this expanded label, Tempus is the first laboratory to hold FDA companion diagnostic (CDx) approval for both tumor-only and tumor-normal comprehensive genomic profiling.

Foundation Medicine, Inc., a global, patient-focused precision medicine company, today announced that it has received approval from the U.S. Food and Drug Administration (FDA) for FoundationOne®CDx to be used as a companion diagnostic (CDx) for TEPMETKO® (tepotinib) developed by EMD Serono, the healthcare business of Merck KGaA, Darmstadt, Germany in the U.S. and Canada. TEPMETKO received accelerated approval from the FDA in February 2021 and traditional approval in February 2024 for the treatment of adult patients with metastatic non-small cell lung cancer (NSCLC) harboring mesenchymal-epithelial transition (MET) exon 14 skipping alterations (METex14).

Guardant Health, Inc. (Nasdaq: GH), a leading precision oncology company, today announced that the U.S. Food and Drug Administration (FDA) has approved Guardant360® Liquid CDx, advancing blood-based comprehensive genomic testing by integrating genomic and epigenomic insights and helping clinicians make better-informed treatment selection decisions for patients with advanced cancer. Guardant360 Liquid CDx is the largest FDA-approved liquid biopsy panel, assessing a 100X wider genomic footprint than the previously approved Guardant360 CDx to deliver comprehensive tumor profiling results. The seven previously U.S. FDA-approved companion diagnostic indications for Guardant360 CDx transfer to the new test with the FDA approval of Guardant360 Liquid CDx.

Natera, Inc. (NASDAQ: NTRA), a global leader in cell-free DNA and precision medicine, today announced that the U.S. Food and Drug Administration (FDA) has approved Signatera CDx as a companion diagnostic (CDx) for use with adjuvant atezolizumab (Tecentriq®) immunotherapy in MIBC.

Myriad Genetics Inc., (NASDAQ: MYGN), a leader in molecular diagnostic testing and precision medicine, today announced that Japan’s Ministry of Health, Labour and Welfare (MHLW) has approved the use of the MyChoice® Test for prostate cancer patients as a companion diagnostic for Lynparza® (olaparib). With this approval, clinicians can now order the MyChoice Test to determine homologous recombination deficiency (HRD) status for patients with ovarian cancer, and BRCA1/2 status for breast and prostate cancers.

Amoy Diagnostics Co., Ltd., Medical ＆ Biological Laboratories Co., Ltd., a group company of Tokuyama Corporation, and Precision Medicine Asia Co., Ltd. today announced that MBL received approval from the Japanese Ministry of Health, Labour and Welfare (MHLW) on March 5, 2026 for the AmoyDx® PIK3CA Mutation Detection Kit in Japan. The approval in Japan marks an important milestone achieved through the close collaboration of MBL, AmoyDx and PREMIA.

Guardant Health, Inc. (Nasdaq: GH), a leading precision oncology company, today announced that the U.S. Food and Drug Administration (FDA) has approved Guardant360® CDx as a companion diagnostic to identify patients with BRAF V600E-mutant metastatic colorectal cancer (mCRC) who may benefit from treatment with BRAFTOVI® (encorafenib) in combination with cetuximab and chemotherapy in accordance with the approved product labeling.

Guardant Health, Inc. (Nasdaq: GH), a leading precision oncology company, today announced a multi-year collaboration with Merck, known as MSD outside the United States and Canada, to support the development and commercialization of Merck’s oncology portfolio using the Guardant Infinity™ Smart platform.