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Life sciences · Observational Study
ClinicalTrials.gov · October 15, 2026
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Observational Study.
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Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
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Registry record from ClinicalTrials.gov (NCT03019757). This is a study registration, not published results. Lead sponsor: Douglas Scharre. Recruitment status: RECRUITING. Study type: OBSERVATIONAL. Enrollment: 76 participants (ESTIMATED). Conditions: Alzheimer's Disease, Lewy Body Dementia, Parkinson's Disease. Interventions: RADIATION: DaTscan; RADIATION: F18-AV-45; RADIATION: FDG-PET; GENETIC: APOE genotype; PROCEDURE: Polysomnogram; BEHAVIORAL: Clinical Assessment. Primary outcome measures: Mini Mental State Examination (MMSE-1) , Baseline; Wechsler Adult Intelligence Scale 4th edition (WAIS-4) Vocabulary , Baseline; Wechsler Adult Intelligence Scale 4th edition (WAIS-4) Digit Span , Baseline; Wechsler Adult Intelligence Scale 4th edition (WAIS-4) Block Design , Baseline; Wechsler Adult Intelligence Scale 4th edition (WAIS-4) Matrix Reasoning , Baseline; Wechsler Adult Intelligence Scale 4th edition (WAIS-4) Reliable Digits (embedded measure) , Baseline; Wechsler Memory Scale 3rd ed. (WAIS-3) Spatial Span , Baseline; Wechsler Memory Scale 3rd ed. (WAIS-3) Logical Memory 1 & 2 , Baseline; Trail Making Test A , Baseline; Trail Making Test B , Baseline; Boston Naming Test , Baseline; Controlled Oral Word Association Test (COWAT)- Animal Naming , Baseline; Judgment of Line Orientation Standardized Test , Baseline; Brief Visuospatial Memory Test (BVMT) , Baseline; California Verbal Learning Test (CVLT-2) , Baseline; Wisconsin Card Sorting Task , Baseline; California Verbal Learning Test (CVLT-2) Forced Choice (embedded measure) , Baseline; Self Administered Gerocognitive Examination- A brief cognitive assessment instrument for mild cognitive impairment and early dementia , Baseline; Apolipoprotein E (APOE) Genotyping of a whole blood sample , Baseline; Clinical Dementia Rating Scale (CDR) , Baseline; The Activities of Daily Living (ADL) Standardized Scale , Baseline; Mayo Fluctuations Scale , Baseline; Neuropsychiatric Inventory (NPI) , Baseline; Beck Depression Inventory 2nd ed. , Baseline; The Modified Somatic Perception Questionnaire , Baseline; The Epworth Sleepiness Scale , Baseline; Mayo Sleep Questionnaire-Informant , Baseline; Functional Outcomes of Sleep Questionnaire-10 , Baseline; Part III and IV of the Movement Disorder Society-sponsored revision of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS) , Baseline; Berg Balance Scale (BBS) , Baseline; Florbetapir (F18-AV-45) positron emission tomography (amyloid PET) , Baseline; Single-photon emission computed tomography (SPECT) with the radioligand [123I]FP-CIT , Baseline; Positron emission tomography with 2-(18F) fluoro-2-deoxy-d-glucose (FDG-PET) , Baseline; Brain MRI , Baseline; Polysomnogram , Baseline. Brief summary: The study is designed to characterize the clinical, neuropsychological, polysomnographic, and neuroimaging findings among subjects with Alzheimer's disease, Lewy Body dementia, and Parkinsons' Disease.