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  • ARTFL LEFFTDS Longitudinal Frontotemporal Lobar Degeneration (ALLFTD) (ALLFTD) Rochester, Minn., Jacksonville, Fla.

    The purpose of this study is to evaluate sporadic (s-) and familial (f-) frontotemporal lobar degeneration (FTLD) patients and asymptomatic family members of f-FTLD patients, characterizing the cohorts longitudinally and informing clinical trial design.  FTLD is a neurodegenerative disorder of the nervous system which there are no approved treatments or cures.

    The study has two arms: a “longitudinal arm” involving a comprehensive assessment of clinical, functional, imaging, and biofluid data collection, and a “biofluid-focused arm” involving limited clinical data to accompany biospecimen collection.

  • Blinded Comparison of Different Alpha-Synuclein Seeding Assays as Cutaneous Biomarkers of Lewy Body Dementias Rochester, Minn., Jacksonville, Fla., Scottsdale/Phoenix, Ariz.

    The purpose of this study is twofold:

    Specific Aim 1

    • In biopsies of skin from living subjects with DLB, PD without dementia (PD), and PD with dementia (PDD), assess the relative diagnostic sensitivity and specificity of IHC and seeding assay measures of aSyn, relative to normal control subjects.

    Specific Aim 2

    • In second biopsies of skin from subjects with DLB, PD and PDD, assess whether IHC and seeding measures of aSyn progress, regress or remain stable over time, indicating whether these may be useful as measures of therapeutic agent target engagement and disease progression.
  • Cerebrospinal Fluid (CSF) Biomarkers for Prediction of Dementia Rochester, Minn.

    To further investigate biomarkers in CSF as possible predictors for mild cognitive impairment and dementia

  • Longitudinal Imaging Biomarkers of Prodromal and Overt DLB Rochester, Minn., Jacksonville, Fla.

    Longitudinal Imaging Biomarkers of Disease Progression in Prodromal and Overt DLB

  • North American Prodromal Synucleinopathy Consortium for RBD, Stage 2 (NAPS2) (NAPS2) Rochester, Minn.

    Most individuals with rapid eye movement (REM) sleep behavior disorder (RBD) develop additional
    neurological symptoms and are subsequently diagnosed with overt synucleinopathies, including dementia with
    Lewy bodies (DLB), Parkinson disease (PD), and multiple system atrophy (MSA), indicating that RBD
    represents a prodromal stage of synucleinopathy. RBD therefore offers a window of opportunity to intervene
    with neuroprotective treatments at the earliest stages of disease when treatment is most likely to be effective.
    Recognizing the importance of early intervention, key federal agencies focused on neurodegenerative disease
    have proposed high priority recommendations for prodromal aspects of synucleinopathies, including
    specifically RBD, to prepare for clinical trials. The North American Prodromal Synucleinopathy (NAPS)
    Consortium began in 2018 to plan for neuroprotective clinical trials in RBD. The NAPS Consortium, currently at
    10 sites, has thus far enrolled 215 participants with polysomnogram-confirmed RBD, and has successfully
    performed comprehensive and standardized assessments and biofluids collection. The North American
    Prodromal Synculeinopathy Consortium for RBD, Stage 2 (NAPS2) program represents an integrated
    expansion of NAPS to support a longitudinal, prospective study of RBD, to address key gaps currently
    prohibiting neuroprotective clinical trials in RBD. NAPS2 will establish enhanced infrastructure to support longterm
    research in prodromal synucleinopathies.

Closed for Enrollment

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