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.