Clinical Research Directory

Slowing Cognitive Decline in Alpha-synucleinopathies by Enhancing Physical Activity

α-Synucleinopathies, including Parkinson's disease and dementia with Lewy bodies, are the second most common neurodegenerative diseases. In addition to progressive motor deterioration, cognitive decline is a key element of the non-motor symptom complex of these diseases. Isolated rapid eye movement (REM) sleep behavior disorder (iRBD) indicates an early stage of α-synucleinopathies, even before relevant motor or cognitive disorders are present. Therapeutic interventions in individuals with iRBD therefore have great preventive potential. In particular, increasing physical activity could have a relevant effect on neurodegenerative processes, including the preservation of cognitive functions. The aim of the study is therefore to investigate the effects of increased physical activity in everyday life on cognitive functions in individuals with iRBD. In this randomized, double-blind, actively controlled study, an increase in physical activity will be implemented over a period of one year with the help of a motivational smartphone application. The intervention and control conditions are the same as those used in the Slow-SPEED trials, making the connection between the trials concrete. The primary outcome parameter is the change in cognitive performance in a neuropsychological test battery over one year. Eighty individuals with iRBD and 50 age- and gender-matched individuals are being recruited at the University Hospital Bonn and the "Deutsches Zentrum für Neurodegenerative Erkrankungen" (DZNE) Bonn (German branch only). In addition to classic neuropsychological tests as the primary endpoint, magnetic resonance imaging (MRI) and blood-based markers of brain aging are being examined as secondary endpoints. This study is in close collaboration with the Slow-SPEED study (https://clinicaltrials.gov/study/NCT06993142). In addition, selected data from three separate trials-Alpha-Fit, Slow-SPEED-NL, and a sister trial in Austria currently in preparation-are planned to be synthesized into a meta-analysis.

Linac FRACtionated Radiosurgical THALamotomie in Tremors (FRACTHAL)

Radiosurgical thalamotomy on GammaKnife has been shown to be effective in the management of tremors. However, several teams describe a significant risk of severe neurological complications. In addition, fitting the invasive frame and the need to travel to GammKnife centers often limit access to treatment in this population of elderly patients. Linear accelerators have greatly improved their precision, now reaching that of GammaKnife. A possible alternative is therefore to treat patients on linear accelerators, without an invasive frame. The objective of the FRACTHAL study is to assess the feasibility and safety of treatment of essential and / or parkinsonian tremor by fractional radiosurgical thalamotomy on a linear accelerator. The main hypothesis of the FRACTHAL study is based on the fact that dividing the dose into 3 sessions will both protect healthy tissue around the target while maintaining therapeutic efficacy on the treatment target.

The National Registry Study For the Real-world Patients With Parkinsonian Disorders in China

The overall goal of this project is to identify, assess and longitudinally monitor subjects who are interested in participating in this study. Participants will enroll through a platform named PaWei, and provide informed consent prior to any study activities. PaWei will collect a variety of information, including participants' demographic information, overall health, family history of Parkinson's Disease, other clinical information (clinical drug use, drug efficacy, and comorbid disorders), mood status, sleep, diet, exercise, memory complaints, online cognitive tests, the Short-Form 8-Item Parkinson's Disease Questionnaire (PDQ-8), Movement Disorder Society-Unified Parkinson's Disease Rating Scale IB \& II (MDS-UPDRS IB \& II), Non-Motor Symptom Aassessment Scale for Parkinson's Disease (NMSS) , Hoehn and Yahr Scale, and other scales related to quality of life, etal---all through self-reported online questionnaires. Participants will also be asked to return to the PaWei every 3 months at regular intervals, to complete follow-up scales related to quality of life, and neuropsychological assessments, etal. Anyone with Parkinsonian Disorders is welcome to participate.

Study of Axial and Cognitive Symptoms and Biomarkers of Neurodegeneration in Brain-first and Body-first PD

This observational study aims to systematically characterize a cohort of patients with early-stage Parkinson's disease (PD) attending the Movement Disorders Center of AUSL-IRCCS Reggio Emilia, Italy. PD is the second most common neurodegenerative disorder, affecting about 1% of individuals over 60 years of age. The project will explore clinical and biological differences between the recently proposed "Brain-First" and "Body-First" phenotypes of PD. Patients will undergo detailed clinical evaluation, neuroimaging, and biomarker assessments (including neurodegeneration and neuroinflammation markers). Particular attention will be given to the progression of axial and cognitive symptoms, which represent major contributors to disability. Findings from this study are expected to improve early patient stratification, clarify disease mechanisms, and support the development of precision medicine strategies and future disease-modifying therapies.

Mobile Parkinson Observatory for Worldwide, Evidence-based Research (mPower)

The purpose of this study is to understand variation in the symptoms of Parkinson disease. This study uses an iPhone app to record these symptoms through questionnaires and sensors.

Gait Analysis in Neurological Disease

The purpose of this study is to investigate whether speed-dependent measures of gait can be identified in patients with neurological conditions that affect gait, particularly in subjects with parkinsonian disorders.

Slow-SPEED: Slowing Parkinson's Early Through Exercise Dosage

The goal of this clinical trial is two-fold. First to investigate the feasibility of whether a remotely administered smartphone app can increase the volume and intensity of physical activity in daily life in individuals with a LRRK2 G2019S or GBA1 N370S genetic mutation over a long period of time (24 months). Second, to explore the preliminary efficacy of exercise on markers for prodromal Parkinson's disease progression in individuals with a LRRK2 G2019S or GBA1 N370S genetic mutation. Participants will be tasked to achieve an incremental increase of daily steps (volume) and amount of minutes exercised at a certain heart rate (intensity) with respect to their own baseline level. Motivation with regards to physical activity will entirely be communicated through the study specific Slow Speed smartphone app. A joint primary objective consists of two components. First to determine the longitudinal effect of an exercise intervention in LRRK2 G2019S or GBA1 N370S variant carriers on a prodromal load score, comprised of digital biomarkers of prodromal symptoms. The secondary component of the primary outcome is to determine the feasibility of a remote intervention study. The secondary objective is the effect of a physical activity intervention on digital markers of physical fitness. Exploratory outcomes entail retention rate, completeness of remote digital biomarker assessments, digital prodromal motor and non-motor features of PD. Using these biomarkers, the investigators aim to develop a composite score (prodromal load score) to estimate the total prodromal load. An international exercise study with fellow researchers in the United Kingdom are currently in preparation (Slow-SPEED-UK) and active in the Netherlands (Slow-SPEED-NL). Our intention is to analyse overlapping outcomes combined where possible through a meta-analysis plan, to obtain insight on (determinants of) heterogeneity in compliance and possible efficacy across subgroups

Slow-SPEED-NL: Slowing Parkinson's Early Through Exercise Dosage-Netherlands

The goal of this clinical trial is to investigate the feasibility if a remotely administered smartphone app can increase the volume and intensity of physical activity in daily life in patients with isolated Rapid Eye Movement (REM) sleep behaviour disorder over a long period of time (24 months). Participants will be tasked to achieve an incremental increase of daily steps (volume) and amount of minutes exercised at a certain heart rate (intensity) with respect to their own baseline level. Motivation with regards to physical activity will entirely be communicated through the study specific Slow Speed smartphone app. Primary outcomes will be compliance expressed as longitudinal change in digital measures of physical activity (step count) measured using a Fitbit smartwatch. Exploratory outcomes entail retention rate, completeness of remote digital biomarker assessments, digital prodromal motor and non-motor features of PD, blood biomarkers and brain imaging markers. Using these biomarkers, we aim to develop a composite score (prodromal load score) to estimate the total prodromal load. An international exercise study with fellow researchers in the United States and United Kingdom are currently in preparation (Slow-SPEED). Our intention is to analyse overlapping outcomes combined where possible through a meta-analysis plan, to obtain insight on (determinants of) heterogeneity in compliance and possible efficacy across subgroups

The Personalized Parkinson Project De Novo Cohort

Currently, the Movement Disorders Society (MDS)-UPDRS scale remains the gold standard to document the outcomes in clinical trials for Parkinson's disease (PD). The MDS-UPDRS is far from infallible, as it is based on subjective scoring (using a rather crude ordinal score), while execution of the tests depends on clinical experience. Not surprisingly, the scale is subject to both significant intra- and inter-rater variability that are sufficiently large to mask an underlying true difference between an effective intervention and placebo. Digital biomarkers may be able to overcome the limitations of the MDS-UPDRS, as they continuously collects real-time data, during the patient's day to day activities. In this study the investigators are interested in developing algorithms to track progression of bradykinesia, gait impairment, postural sway, tremor, physical activity, sleep quality, and autonomic dysfunction (the latter being derived from e.g. skin conductance and changes in heart rate variability).

An Innovative Method in SAliva Samples for the Early Differential Diagnosis of High-impact NeuroDegenerative Diseases Through Raman Spectroscopy

The aim of the study is to validate a salivary test that allows for rapid and accurate objective diagnosis in the context of neurodegenerative diseases, a complex of diseases that includes Alzheimer's Dementia, Frontotemporal Dementia, Parkinson's Disease, Atypical Parkinsonisms, and Amyotrophic Lateral Sclerosis. In particular, the study aims to validate the salivary method against methods already in use (CSF method) or better studied (blood-based method) to allow early recognition of the disease condition and a distinction between the various diseases in order to receive appropriate therapy when possible. In fact, the term neurodegenerative diseases is a broad term that includes disorders characterized by predominantly cognitive, motor, or mixed disorders for which early and accurate diagnosis of the disease is often difficult given also the variability with which these diseases can present. Ab initio recognition of a specific neurodegenerative disease would allow better pharmacological management of this disorder and facilitate the planning of care and rehabilitation interventions. In general, the recognition of neurodegenerative diseases could be facilitated by the use of a biomarker, which is a biological indicator that can be related to the onset or development of a disease. For this reason, it is necessary to compare the biomarker assay of patients with that of controls, so you were asked to participate as a "Control Subject" precisely because you do not have neurodegenerative disease. Participation in the study involves, in addition to the collection of clinical-demographic data, the performance of a cognitive screening test to attest that your cognitive performance is in the normal range and the collection of biological blood and salivary samples, to be compared with those of participants with neurodegenerative diseases. Apolipoprotein E (ApoE) polymorphism study will be performed on the blood. A genetic polymorphism is a variation in the DNA sequence present in at least 1% of the population, the determination of ApoE polymorphism will allow to define a His genetic characteristic related to a higher or lower risk of developing Alzheimer's Disease. Two specific biomarkers, called neurofilament light chain (NfL) and gliofibrillary acidic protein (GFAP), namely a marker of neurodegeneration and one of neuroinflammation, will also be assayed on blood. Analysis of some inflammatory proteins called cytokines will also be performed. On saliva, the biochemical composition will be evaluated with the analysis of particles present within it called vesicles by a method called Raman Spectroscopy, and the assay of specific biomarkers called NfL and GFAP will also be performed on saliva. The diagnosis of pathology made according to clinical diagnostic criteria and supported, when necessary, by the presence of recognized biomarkers (molecular imaging/liquid markers) will be used as a reference to evaluate the diagnostic capabilities of salivary methodology to detect different pathologies and to differentiate a pathological condition from Controls. Finally, the study will also include a comparison of salivary study methods on a group of people who are at a very early stage of disease, in order to detect whether the study performed with portable instrumentation is as good a method as that with laboratory instrumentation. In fact, the use of portable instrumentation would make it even easier to acquire a biomarker quickly directly from the clinic.

West Sweden Parkinson Objective Measurement Registry Study

WestPORTS will recruit a randomly selected population consisting of 25% of all individuals with Parkinson's disease (ICD G209) that have visited any of the seven major outpatient neurology or geriatrics clinics in West Sweden (population 1.7M) during a predefined 12 month period between Sept 2016 and April 2018. Baseline clinical and demographic data will be collected along with a 6 x 24h accelerometry recording using the Parkinson Kinetigraph (Global Kinetics). Repeated data collections will be made with regular intervals of up to 2 years as long as subjects are alive and willing.