Disease Directory Progressive Supranuclear Palsy
Neurological

Progressive Supranuclear Palsy

Also known as: PSP, Richardson syndrome, PSP-RS, Steele-Richardson-Olszewski syndrome, tauopathy 4R

Prevalence

1-5 per 10,000 (Orphanet)

Onset

Adult

Type

Sporadic (MAPT risk haplotype, H1)

Gene

MAPT (risk haplotype, rarely causative)

About Progressive Supranuclear Palsy

Progressive supranuclear palsy (PSP) is a rare neurodegenerative tauopathy characterized by 4-repeat tau (4R-tau) accumulation in neurons and glia of the brainstem, basal ganglia, and cerebral cortex. The Richardson syndrome (PSP-RS) phenotype is most common, featuring vertical supranuclear gaze palsy, early postural instability with falls, dysarthria, and cognitive decline. PSP is uniformly fatal, with a median survival of 5-7 years from symptom onset.

Common Clinical Features

Vertical supranuclear gaze palsy Postural instability and falls backward Dysarthria and dysphagia Cognitive and behavioral changes Axial rigidity Micrographia Eyelid apraxia

Clinical Trial Eligibility Tips

What to know before applying to Progressive Supranuclear Palsy trials.

Movement Disorder Society PSP diagnostic criteria (probable or possible) must be met — vertical gaze palsy documentation is required

CSF neurofilament light chain (NfL) and CSF total tau are biomarkers used in trial stratification

Anti-tau therapies (ASOs, antibodies) are the primary investigational approaches — disease duration of <4 years is a common eligibility cut-off

Functional status (PSP Rating Scale score) and mobility documentation are required baseline measures

Patient Resources

Patient Organization

CurePSP

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Natural History Registry

CurePSP Patient Registry

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Orphanet

European reference resource for rare diseases (ORPHA:683)

View on Orphanet ↗

NORD

National Organization for Rare Disorders

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Find recruiting Progressive Supranuclear Palsy trials

Search 500,000+ studies from ClinicalTrials.gov, filtered for Progressive Supranuclear Palsy. Updated daily.

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