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Ptau217

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Alzheimer's screening push stalls as federal panel stays sidelined
health1 month ago

Alzheimer's screening push stalls as federal panel stays sidelined

US Health Secretary Robert F. Kennedy Jr. calls for better Alzheimer’s screening, but the USPSTF—an influential panel that guides research and insurance coverage—has not met for more than a year due to vacancies and political appointee firings, delaying recommendations and funding decisions. Experts say evidence for routine cognitive screening remains mixed, while Kennedy and others push for faster action and more research into screening tools and biomarkers. Funding freezes and policy shifts have slowed Alzheimer’s research centers, and scientists caution against broadly rolling out new tests like the P-Tau217 biomarker without robust validation, even as millions live with the disease.

via The Guardian|
#alzheimers-screening#funding-disruptions#health
Blood test signals Alzheimer’s risk up to a decade early
health1 month ago

Blood test signals Alzheimer’s risk up to a decade early

A Harvard-led study of nearly 2,700 cognitively healthy older adults found that a simple blood test measuring the p-tau217 biomarker can predict future cognitive decline up to 10 years before symptoms; very high levels were linked to about a 78% chance of impairment within a decade, and moderate elevations still carried roughly a 45% risk, suggesting the test could aid risk assessment and trial recruitment while recognizing that results must be confirmed across diverse groups and longer follow-up.

via Fox News|
#alzheimers#biomarkers#blood-test
Blood biomarker pTau217 flags Alzheimer's risk years before symptoms
science4 months ago

Blood biomarker pTau217 flags Alzheimer's risk years before symptoms

A Mass General Brigham-led study shows a blood test measuring pTau217 can predict Alzheimer's risk years before symptoms appear, potentially enabling earlier, less invasive screening than PET scans; while promising, more research is needed to validate across diverse populations and translate these findings into clinical practice.

via Indian Defence Review|
#alzheimers#blood-biomarker#early-detection
Blood Test pTau217 Signals Alzheimer's Risk Years Before Symptoms
health4 months ago

Blood Test pTau217 Signals Alzheimer's Risk Years Before Symptoms

A study of 317 cognitively healthy adults over about eight years shows that the blood biomarker pTau217 tracks brain amyloid and tau buildup and can predict future Alzheimer's pathology years before signs appear, potentially matching or prefiguring PET scans. While promising, researchers caution that more diverse data and validation are needed before clinical use, and not all biomarker-positive individuals progress to dementia.

via ScienceAlert|
#alzheimers-disease#biomarkers#blood-test
Blood Test Signals Dementia Risk Decades Before Onset
science5 months ago

Blood Test Signals Dementia Risk Decades Before Onset

UC San Diego researchers identify plasma phosphorylated tau 217 (p-tau217) as a blood biomarker that predicted future dementia risk decades before symptoms, especially in older women and APOE ε4 carriers; its predictive power varies with age and hormone therapy history, suggesting potential for earlier prevention and monitoring, though not yet ready for routine clinical use.

via SciTechDaily|
#alzheimers-disease#biomarkers#blood-test
Blood protein test flags dementia risk decades before symptoms
health5 months ago

Blood protein test flags dementia risk decades before symptoms

A study using the Women’s Health Initiative Memory Study found that higher levels of the blood protein phosphorylated tau 217 (p-tau217) correlate with a greater risk of developing dementia years later, potentially predicting risk up to 25 years before symptoms in 2,766 women aged 65–79. Those with higher p-tau217 had more than a threefold increased risk, with the highest levels linked to about sevenfold risk. The findings suggest a blood-based biomarker could enable earlier brain-health monitoring and prevention, but it’s not yet recommended for routine screening and requires further validation across diverse populations.

via Earth.com|
#biomarkers#blood-test#dementia