Sunbird Bio Inc.’s Neural EV-tau aggregate assay demonstrated 92% correlation with PET scans in identifying individuals with Alzheimer’s disease, a study presented at the Alzheimer’s Association International Conference in Philadelphia, on July 30 found.

Quest Diagnostics Inc. expanded its Alzheimer’s disease (AD) portfolio with a blood-based biomarker test for phosphorylated tau 217 (pTau217). The test joins the company’s plasma tests for p-tau181, beta-amyloid 42/40 ratio and ApoE genetic risk as well as several cerebrospinal fluid tests for Alzheimer’s.

The U.S. FDA granted Roche Holding AG breakthrough device designation for the Elecsys pTau217 assay that it is developing with Eli Lilly and Co. The test will help with the earlier diagnosis of Alzheimer's disease as it will be able to identify pTau217, a phosphorylated fragment of the protein tau, which is a biomarker that can distinguish the disease from other neurodegenerative disorders.

Acquisitions in the diagnostics space incurs some interesting liabilities, given recent case law regarding subject matter eligibility, but this is not the only trap door for the acquiring company. Roche Diagnostics Corp., of Indianapolis, managed to avoid an induced patent infringement charge by Meso Scale Diagnostics LLC in a recent hearing at the U.S. Court of Appeals for the Federal Circuit in connection with Roche’s 2007 acquisition of Bioveris Corp.