MDS Abstracts

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

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  • 2026 International Congress

    Oligodendrocyte-Specific α-Synuclein Pathology is Linked to Severe Motor Phenotype in a Novel Mouse Model of Multiple System Atrophy

    J. Bergstrom, Y. Liang, K. Luk (Philadelphia, USA)

    Objective: We characterized the formation of α-synuclein pathology and development of motor phenotypes in a mouse model of multiple system atrophy overexpressing human SNCA in…
  • 2026 International Congress

    Partial Duplication of NBEA in a Patient Presenting Chorea with Incomplete Penetrance

    HY. Wang, XS. Zheng, W. Luo (Hangzhou, Zhejiang Province, China)

    Objective: To report a novel genotype-phenotype correlation involving a partial duplication of the NBEA gene in a patient presenting with chorea. Background: NBEA has been identified as…
  • 2026 International Congress

    Postural Sway Frequencies in Isolated REM Sleep Behavior Disorder Might Indicate Subtle Motor Impairments as Prodromal Marker of Parkinson’s Disease

    D. Engel, P. Carlson-Kuhta, M. Lim, H. Hameed, K. Ehgoetz Martens, F. Horak, M. Mancini, M. Sommerauer (Bonn, Germany)

    Objective: In this preliminary study, we aimed to compare postural sway between individuals with early, untreated Parkinson’s disease (PD), individuals with isolated REM sleep behavior…
  • 2026 International Congress

    Cognitive Trajectories After STN DBS in Parkinson’s Disease: 12-Month Outcomes

    N. Austin, C. O'Keeffe, E. Reynolds, M. Garvey, F. Ruggieri, M. Kelly, C. Moran, R. Walsh (Dublin, Ireland)

    Objective: To determine whether early postoperative cognitive changes occur across distinct domains following STN-DBS Background: Deep Brain Stimulation (DBS) of the subthalamic nucleus (STN) is…
  • 2026 International Congress

    Stimulation-Level Sweet-Spot and Connectivity Analysis of Pallidal DBS in Huntington’s Disease

    M. Borrell-Pichot, G. Olmedo-Saura, A. Puig-Davi, C. Franch-Marti, S. Martínez-Horta, R. Rodríguez-Rodríguez, JA. Aibar-Duran, R. Martínez-Fernández, B. Pascual-Sedano, J. Kulisevsky, J. Pérez-Pérez, I. Aracil-Bolaños (Barcelona, Spain)

    Objective: To assess clinical outcomes and identify stimulation and structural connectivity patterns associated with motor improvement in Huntington’s Disease (HD) patients undergoing DBS. Background: DBS…
  • 2026 International Congress

    The Sweet Smell of ON: Phantosmia During Motor Fluctuations After Initiation of Foslevodopa/Foscarbidopa Infusion Therapy

    S. Giri Ravindran, K. Afshin, E. Noyes (Saskatoon, Canada)

    Objective: To report a unique case of phantosmia/olfactory hallucinations (OfH) emerging as a non-motor fluctuation after initiation of foslevodopa/foscarbidopa (LDp/CDp) infusion at a lower levodopa…
  • 2026 International Congress

    Association of the GCH1 p.Ser80Asn variant with Parkinson’s disease in East Asian populations

    YW. Tay, AL. Lee, JP. Schee, CH. Lin, EK. Tan, JH. Shin, PS. Chen, E. Ng, HJ. Kim, BS. Jeon, I. Sarmiento, M. Periñan, L. Lange, P. Heutink, K. Lohmann, C. Klein, N. Mencacci, SY. Lim, A. Ahmad Annuar, AH. Tan (Kuala Lumpur, Malaysia)

    Objective: To investigate the clinical relevance and PD risk associated with the GCH1 p.Ser80Asn variant. Background: Heterozygous variants in GCH1 are the most frequent cause…
  • 2026 International Congress

    Longitudinal gait changes after unilateral and bilateral MRgFUS thalamotomy in Essential Tremor

    E. Salinas Jaime, G. Diaz-Taveras, P. Lecumberri Villamediana, E. Natera-Villalba, A. Martin-Bastida, A. Arcadi Da-Silva, L. Gonzalez-Quarante, PM. Cortadi La-Villa, C. Sanchez-Catasus, M. Rodriguez-Oroz (Pamplona, Spain)

    Objective: To evaluate changes in gait parameters Essential Tremor (ET) patients treated with unilateral or bilateral Magnetic Resonance-guided Focused Ultrasound (MRgFUS) thalamotomy, and to assess…
  • 2026 International Congress

    Cerebellar cholinergic denervation relates to impaired gait and cerebellocortical resting-state functional connectivity in Parkinson disease

    B. Maiti, J. O'Donnell, K. Rawson, M. Owusu-Ansah, A. Tannenbaum, A. Eid, S. Grossen, J. Hood, S. Norris, M. Campbell, G. Earhart, J. Perlmutter (Saint Louis, USA)

    Objective: The purpose of this cross-sectional study was to investigate the cholinergic denervation of the cerebellum and its contribution to impaired gait and cerebellocortical resting-state…
  • 2026 International Congress

    Impact of Symptom-Specific Odorants on the Diagnostic Accuracy of Brief Olfactory Tests in Parkinson’s Disease

    TC. Fang, YH. Lin, MH. Chang, YJ. Guo (Taichung, Taiwan)

    Objective: To evaluate whether the addition of PD symptom-specific odorants improves diagnostic accuracy in distinguishing patients with PD from healthy controls. Background: Parkinson’s disease (PD)…
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