MDS Abstracts

Abstracts from the International Congress of Parkinson’s and Movement Disorders.

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  • 2026 International Congress

    Longitudinal shifts in goal-directed and habitual control relate to tic severity and cortico-striatal connectivity in adolescents with Tourette syndrome

    C. Lecomte, TM. Sartoris, C. Atkinson-Clement, B. Beranger, C. Tarrano, FX. Lejeune, R. Valabrègue, A. Hartmann, V. Czernecki, E. Roze, C. Rosso, P. Pouget, C. Gallea, Y. Worbe (Paris, France)

    Objective: To investigate the balance between goal-directed and habitual control in adolescents with Tourette syndrome (TS) and to determine how longitudinal changes in this balance…
  • 2026 International Congress

    Anhedonia in Parkinson’s Disease: Prevalence and Clinical Correlations

    Z. Sayfutdinkhuzhaev, I. Zhukova, N. Zhukova, G. Isroilova (Tomsk, Russian Federation)

    Objective: To investigate the prevalence of anhedonia in patients with Parkinson’s disease (PD) and to analyze its relationship with age, motor deficit severity, depression, and…
  • 2026 International Congress

    Myoclonic Tremor and Cervical Dystonia as an Atypical Presentation of Ataxia-Telangiectasia

    MN. Afkir Ortega, E. Navarro Mocholi, M. Campins Romeu, I. Martinez Torres, C. Sanchis Llopis, C. Morata Martinez, J. Perez Garcia, I. Sastre Bataller (Valencia, Spain)

    Objective: To describe an unusual case of ataxia-telangiectasia (A-T) presenting with myoclonic tremor and cervical dystonia in the absence of ataxia. Background: A-T is a…
  • 2026 International Congress

    Baseline MRI Predictors of Phenoconversion and Prodromal Progression in Non-Manifesting PD Mutation Carriers: A Longitudinal Retrospective Analysis

    AD. Droby, BK. Krayem, SA. Abed, NN. Nguyen, DE. Eidelberg, AV. Vo, AM. Mirelmen, AT. Thaler (Tel Aviv, Israel)

    Objective: We evaluated the sensitivity of baseline MRI measures to predict future PD conversion, and whether baseline MRI associates with MDS prodromal likelihood ratio (LR)…
  • 2026 International Congress

    Polypharmacy and its Impact in Individuals with Parkinson’s Disease: Theory- and Data-Driven Approaches

    E. Nguyen, S. Maji, B. Klinedinst, N. Meier (Irvine, USA)

    Objective: The aim is to explore the relationship between high prescription drug use (polypharmacy), and its unintended effects on individuals with Parkinson’s Disease (PD). Background:…
  • 2026 International Congress

    Caudate-Predominant Striatal Dopaminergic Deficits in bvFTD with Parkinsonism

    L. Feng, W. Liu, J. Wang, J. Wang, F. Liu (Shanghai, China)

    Objective: To characterize the dopaminergic lesion pattern in behavioral variant frontotemporal dementia with parkinsonism (bvFTD-P) using dopamine transporter (DAT) positron emission tomography (PET), and to…
  • 2026 International Congress

    Marked intrafamilial phenotypic variability in VPS13A disease: a case series of three siblings

    S. Rampes, A. Batla (Luton, United Kingdom)

    Objective: To describe a case series of neuroacanthocytosis in three siblings from the same family with the same pathogenic VPS13A nonsense mutation, highlighting the marked…
  • 2026 International Congress

    Binge-eating as an Initial Presentation for the Diagnosis of Chorea-acanthocytosis

    K M. Lau, Y H. Lau (London, United Kingdom)

    Objective: - Background: Chorea-acanthocytosis (ChAc) is an autosomal recessive disorder associated with mutations or deletions in the VPS13A gene on chromosome 9q21, which codes for…
  • 2026 International Congress

    Quantitative Susceptibility Mapping Revealed Regional Iron Alteration and As a Biomarker for Dopaminergic Deficits in Parkinson’s Disease

    XY. Xie, HL. Wang, YL. Du, G. Wang (Shanghai, China)

    Objective: This study aimed to identify regions with altered brain iron accumulation using quantitative susceptibility mapping (QSM) and to investigate the association between iron deposition…
  • 2026 International Congress

    Decentralized Clinical Trial of a Phase 3 Light Therapy Device for Parkinson’s Disease: Feasibility, Safety, and Efficacy

    S. Hussain, C. Alessi-Fox, M. Kostrzebski, K. Murphy, M. Porto, K. Schmier, K. Clark, A. Mcgarry, J. Adams, K. Hendrix, S. Hendrix, D. Adams, E. Dorsey, AND. The Light-Pd Investigators (San Francisco, USA)

    Objective: To demonstrate the feasibility of an entirely remote, decentralized clinical trial and evaluate the efficacy and safety of a light therapy device to treat…
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