Evidence map›Paper›PMID 41562273›Full record

ArticleMovement disorders : official journal of the Movement Disorder Society2026

Localized Iron Deposition and Shape Changes of Cerebellar Dentate in Progressive Supranuclear Palsy Clinical Variants.

Austin C Wang, Hossam Youssef, Farwa Ali, Keith A Josephs, Jennifer L Whitwell, Ryota Satoh

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Article in Movement disorders : official journal of the Movement Disorder Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Austin C WangDepartment of Radiology, Mayo Clinic, Rochester, Minnesota, USA.
Hossam YoussefDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.
Farwa AliDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.
Keith A JosephsDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.ORCID https://orcid.org/0000-0003-2930-8634
Jennifer L WhitwellDepartment of Radiology, Mayo Clinic, Rochester, Minnesota, USA.ORCID https://orcid.org/0000-0001-6914-1563
Ryota SatohDepartment of Radiology, Mayo Clinic, Rochester, Minnesota, USA.ORCID https://orcid.org/0000-0002-3418-2987

Funding

Longitudinal Multi-modal Imaging in Progressive Supranuclear Palsy SyndromesR01NS089757 · NINDS · MAYO CLINIC ROCHESTER · PI JOSEPHS, KEITH A, WHITWELL, JENNIFER LOUISE · 2015 to 2024
$5.6M
NIH HHS R01-NS89757)NINDS NIH HHS R01 NS089757
6 · The paper itself

Abstract

backgroundThe cerebellar dentate is a known site of iron accumulation and tau deposition in progressive supranuclear palsy (PSP); however, detailed iron distribution and localized volume and shape changes remain unclear across PSP clinical variants.

objectiveThe study aimed to clarify details about regional susceptibility distribution, volume, and shape deformation in the cerebellar dentate across PSP clinical variants.

methodsSixty-seven PSP patients, including 31 PSP-Richardson syndrome, 12 PSP-parkinsonism, 10 PSP-progressive gait freezing, and 14 PSP-cortical variants (PSP-frontal, PSP-speech/language, and PSP-corticobasal syndrome), and 31 healthy controls underwent 3 Tesla magnetic resonance imaging to reconstruct quantitative susceptibility maps. Manual dentate segmentation was performed to extract magnetic susceptibility and volume adjusted for total intracranial volume. Shape deformation was assessed using Deformetrica atlas construction. Group comparisons were evaluated with Kruskal-Wallis tests and receiver operating characteristic analysis.

resultsPatients with PSP-Richardson syndrome, PSP-parkinsonism, and PSP-cortical variants showed significantly increased dentate susceptibility compared with controls (P < 0.05). Patients with PSP-progressive gait freezing showed no significant susceptibility differences. Volume loss was most prominent in PSP-cortical variants, bilaterally, and PSP-Richardson syndrome, left hemisphere only (P < 0.05). Shape analysis revealed subregion-specific deformation patterns, especially in the anterior and posterior deformation in PSP-progressive gait freezing and the ventroanterior deformation in PSP-cortical variants.

conclusionsThe PSP clinical variants had different patterns of susceptibility, volume, and shape metrics, reflecting distinct neurodegenerative patterns of the cerebellar dentate. These findings contribute to our understanding of the neurobiology of PSP and may help to improve phenotypic differentiation of PSP clinical variants. © 2026 International Parkinson and Movement Disorder Society.

Indexed as

IronSupranuclear Palsy, ProgressiveAgedFemaleGait Disorders, NeurologicHumansMagnetic Resonance ImagingMaleMiddle AgedParkinsonian DisordersIroncerebellar dentatePSPQSMquantitative susceptibility mappingshape analysis

Identifiers

PMID41562273
PMCPMC13154375

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.