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Three Tau Pathology Patterns in Progressive Supranuclear Palsy
Progressive supranuclear palsy exhibits distinct patterns of tau protein spreading through the brain, according to a comprehensive pathological analysis of 241 cases.
Background
PSP is a rare tau-driven neurodegenerative disorder with variable clinical presentations. Understanding how tau pathology patterns drive disease heterogeneity is essential for developing targeted therapies.
Key Findings
- Three distinct tau progression patterns identified: subcortical-to-cortical; early subcortical-plus-temporal/anterior-frontal; early subcortical-plus-posterior-frontal/parietal
- Clinical predictors of shorter survival include vertical gaze palsy, rigidity, bradykinesia, constipation, and bulbar dysfunction
- MAPT H2 carriers show higher cortical tau pathology; TDP-43 co-pathology present in 87.5% of speech/language phenotype cases
- Strong tau correlations between anatomically connected regions support disease spread via white matter tracts
Why It Matters
These findings enable anatomically grounded PSP subtype classification for patient stratification, prognostication, biomarker interpretation, and therapy design. Genetic factors and co-pathology influence regional vulnerability, supporting precision medicine approaches.
Limitations
This cross-sectional postmortem study cannot observe longitudinal tau progression directly. Findings need validation through in vivo tau imaging and prospective cohort studies.
Original paper: Data-driven modelling of tau pathology reveals distinct progressive supranuclear palsy subtypes. — Brain : a journal of neurology. 10.1093/brain/awag131
