Siemens Healthineers AG became the latest company to sign a licensing agreement with Alzpath Inc. to use its pTau217 antibody in the development of a blood-based diagnostic assay for Alzheimer's disease. Alzpath previously signed deals with the likes of Roche AG and Beckman Coulter Diagnostics Inc. to use its pTau217 antibody to create diagnostic tests based for early detection and monitoring of Alzheimer's.