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Lecanemab Blood Biomarkers Rebound Faster Than Amyloid PET After Stopping

Editorial card showing lecanemab maintenance dosing and Alzheimer's blood biomarkers with blood vials, amyloid PET imagery, and biomarker trajectory lines.

Lecanemab blood biomarkers may rebound much faster than amyloid PET after treatment stops: a 2026 PK/PD model estimated that half of the Aβ42/40 treatment effect is lost within 0.5 years, compared with 12.1 years for amyloid PET signal.1 Research Highlights 0.5-year rebound for Aβ42/40: Bhagunde et al. estimated that half of the Aβ42/40 treatment effect …

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Alzheimer’s Progression AI Model Reaches 0.965 mAUC in TADPOLE Dataset

Editorial card showing Alzheimer progression prediction with longitudinal brain scans, model uncertainty, and TADPOLE cohort data.

A 2026 TADPOLE modeling study reported that a sequential neural process with normalizing flows predicted future Alzheimer diagnostic stage with mAUC 0.965 ± 0.006, ahead of the authors’ earlier sequential-neural-process model at 0.937 ± 0.014.1 The result is a strong benchmark signal for uncertainty-aware disease-progression AI, but it is still retrospective modeling evidence rather than …

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Alpha-Synuclein SAA Detected 95% of Lewy Body Dementia in ALZAN

MHD featured image for alpha-synuclein SAA and Lewy body dementia biomarkers.

A 2026 ALZAN memory-clinic cohort found that cerebrospinal-fluid alpha-synuclein seed amplification assay detected 19 of 20 Lewy body dementia cases, with 95% sensitivity and 93.5% specificity against non-Lewy-body, non-Alzheimer’s controls.1 The same assay was positive in 32 of 203 Alzheimer’s disease patients, which makes the result a co-pathology warning as much as a diagnostic win. …

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Olfactory MRI Radiomics Link pTau217 to Alzheimer’s Cognition

MHD featured image for olfactory MRI radiomics, pTau217, and Alzheimer's disease cognitive impairment.

A 2026 multi-cohort Alzheimer’s disease study found that MRI radiomics from the hippocampus and amygdala linked plasma pTau217 and smell identification to cognitive impairment — with more added cognitive signal than simple regional volume. The result is useful because it points to a possible bridge between blood biomarkers and brain-circuit damage, but it is still …

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Tau Oligomers Disrupted Nuclear Lamina in Alzheimer’s Disease Models

MHD featured image for tau oligomers, nuclear lamina disruption, and Alzheimer's disease models.

A 2026 Acta Neuropathologica study found that oligomeric tau was linked to early nuclear lamina disruption in Alzheimer’s disease tissue, PS19 tauopathy mice, and human induced pluripotent stem cell (iPSC)-derived neurons.1 The strongest claim is mechanistic: tau oligomers appeared to deform the nuclear envelope and disturb chromatin before overt neurodegeneration, but the work does not …

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NDST3 Suppression Restores Lysosome Acidity in Alzheimer’s Mouse Models

MHD featured image for NDST3 suppression and lysosomal acidification in Alzheimer's disease models.

A 2026 mechanistic Alzheimer’s study found that suppressing NDST3 shifted lysosomal pH in APP695Swe neuronal cells from 5.6 back below 5.0, then reduced amyloid-β, MAPT/tau pathology, neuronal injury, and memory deficits in 3xTg-AD mice.1 Research Highlights Lysosome pH moved back down: APP695Swe-overexpressing HT22 cells had lysosomal pH around 5.6, while NDST3 knockdown re-acidified lysosomes to …

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Alzheimer’s AI MRI Diagnosis: ANA-GNN Reaches 85.23% Accuracy in ADNI

MHD featured image for ANA-GNN Alzheimer's AI MRI diagnosis in the ADNI cohort.

A 2026 ADNI study reported 85.23% accuracy for ANA-GNN, a graph neural network that combined structural MRI regional features with clinical variables to classify cognitively normal controls, mild cognitive impairment, and Alzheimer’s disease.1 The result is useful, but the clinical-feature ablation dropped accuracy to 68.35%, so the model should be read as multimodal decision-support research, …

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