A team of international researchers is investigating whether a finger-prick blood test could be used to help diagnose Alzheimer’s disease before symptoms appear. With current diagnostic methods relying on expensive brain scans and invasive lumbar punctures, the trial is exploring whether the simple test could offer a faster, cheaper, and more accessible route to identifying the disease.
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.
Data from two Alzheimer’s tests being developed by Roche Holding AG showed high accuracy in detecting the disease in patients being tested for the condition. The tests measure biomarkers in the blood linked to Alzheimer’s and will help provide desperately needed information by letting patients know whether they have the disease or not, Margherita Carboni, Neurology Indication Lead at Roche Diagnostics told BioWorld.
The recent licensing agreement that Alzpath Inc. signed with Roche AG for use of its pTau217 antibody to develop and commercialize an Alzheimer's disease diagnostic blood test will not only transform the company but also allow patients access to a more cost-effective test, Venkat Shastri, CEO of Alzpath told BioWorld.
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.
Laboratory Corporation of America Holdings expanded its blood biomarker test portfolio for Alzheimer’s disease, making its pTau217 test available by prescription in the U.S. as well as for research globally. The standalone test can also be used in monitoring patients undergoing treatment for the neurodegenerative disease.
CYBERSPACE – Data presented at the virtual 2020 Alzheimer's Association International Conference (AAIC) and reported in the July 28, 2020, online issue of the Journal of the American Medical Association (JAMA) demonstrated that blood levels of phosphorylated tau-217 (Ptau-217) did as well as cerebrospinal (CSF)- and PET-based biomarkers, and significantly better than other blood-based biomarkers, at discriminating individuals with Alzheimer’s disease (AD) from those with other neurodegenerative disorders.
