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Find 140 clinical trials for parkinson's disease near Phoenix, Arizona. Connect with research centers in your area.
Showing 41-60 of 140 trials
NCT02610231
This is a Phase 3, 52-week, open-label, flexible-dose, multinational, multicenter study to evaluate the safety and tolerability of istradefylline 20 or 40 mg/d in subjects with moderate to severe PD with motor fluctuations and dyskinesia on levodopa combination (levodopa/carbidopa or levodopa/benserazide) therapy plus at least one adjunctive PD medication. Subjects who completed 12 weeks of double-blind treatment and the 30-day follow-up period in Study No. 6002-014 will undergo Screening and Baseline evaluations for eligibility for the study. Eligible subjects will be treated with istradefylline at a starting dose of 20 mg/d with an option for a dose adjustment to 40 mg/d at Week 12 based on the Investigator's judgment of each subject's response and tolerability. If deemed necessary, one unscheduled dose adjustment visit between Week 2 to Week 12 is allowed in accordance with clinical judgment of the Investigator. Subjects who had a dose adjustment to 40 mg/d can have their dose decreased to 20 mg/d by the Investigator at a second unscheduled dose adjustment visit if there are tolerability issues. The istradefylline dose should remain fixed between Week 26 to Week 52. Consultation with the Sponsor's Medical Monitor is required prior to any unscheduled dose adjustment visits. A subject may discontinue from the study at any time.
NCT04700722
The Synuclein-One Study will be evaluating α-synuclein in patients with Parkinson's disease, Multiple System Atrophy, Dementia with Lewy bodies and Pure Autonomic Failure. Using a simple diagnostic test will improve clinical accuracy in diagnosing, earlier diagnosis, and distinguish between neurodegenerative diseases.
NCT02542696
An Open-Label Phase 3 Study to Examine the Long-Term Safety, Tolerability and Efficacy of APL-130277 for the Acute Treatment of "OFF" Episodes in Patients With Parkinson's Disease
NCT04057794
To assess the feasibility, impact, and participant satisfaction of offering Clinical Laboratory Improvement Amendments (CLIA) certified genetic testing as part of clinical care for People with Parkinson's disease (PWP).
NCT01839396
The purpose of this study is to evaluate the safety and effectiveness of Boston Scientific's Vercise Deep Brain Stimulation (DBS) system in the treatment of patients with with advanced, levodopa-responsive bilateral Parkinson's disease (PD) which is not adequately controlled with medication.
NCT03088592
The pathology of Parkinson's disease (PD) and the mechanism of Deep Brain Stimulation surgery (DBS) are not completely understood. The recording data that is used routinely as part of the procedure to map the target structures, however, may be analyzed in order to better understand the neural network dynamics in PD. The purpose of the study is to perform simultaneous neural recordings from sub-cortical structures (e.g. subthalamic nucleus \[STN\] or globus pallidus internus \[GPi\]) and the cerebral cortex. These simultaneous recordings may provide insight in the pathology of PD and the mechanism of DBS. The researchers will also study the effects of anesthesia level on neuron synchronization . Recordings with micro-ECoG grid electrodes in the cortex show improved spatial resolution and these will be used to gain better understanding of cortical network dynamics and the synchronization with subcortical structures.
NCT03895814
The primary purpose of this project is to determine the preliminary effectiveness of protective step training to improve balance and reduce falls in people with Parkinson's disease (PD) and postural disturbances. A secondary purpose is to understand which baseline patient characteristics predict responsiveness to treatment. By informing 1) the effectiveness of a promising rehabilitative intervention, and 2) the selection of the participants that will be most responsive to treatment, these data may enhance clinicians' ability to treat balance disturbances in people with PD. Importantly, protective step training, described in this proposal, can be quickly deployed in the clinic at minimal cost. Therefore, if shown to be effective via this and subsequent trials, this approach can be easily integrated into care, immediately impacting a large number of people with PD.
NCT02174250
The purpose of this study is to test whether Rifampin affects blood levels of istradefylline in humans. Rifampin could possibly decrease istradefylline levels.
NCT03781791
This study will be conducted as a multi-center, randomized, double-blind, placebo-controlled study. Approximately 72 patients will be randomized 3:1 to treatment or placebo, with approximately 54 patients allocated to receive the active investigational product and approximately 18 patients allocated to receive placebo. \- Study Update- Amendment 3 - In this amendment, an additional 80 patients (approximately) will be randomized 1:1 to treatment or placebo (double-blind) with approximately 40 subjects allocated to each group.
NCT03781167
The purpose of this study was to assess the safety and tolerability of ABBV-951 (Foslevodopa/Foscarbidopa) in participants with Parkinson's disease (PD). This was a single-arm study with preplanned analyses conducted by dose subgroup (Low Dose or High Dose) based on the modal total daily dose (most frequent dose) over the treatment period.
NCT03944785
This is a Phase IV, prospective, observational, post-marketing study designed to obtain additional data on the effect of XADAGO on motor and non-motor symptoms in Parkinson's Disease patients newly prescribed XADAGO.
NCT04483479
This study will be conducted as an open-label safety follow-on to a multi-center, double-blind, randomized study. All subjects who participated in the randomized study will be offered participation in this unblinded, single-arm, safety study. Approximately 50 subjects will be entered into the study and ENT-01 will be administered daily in escalating doses followed by a fixed dose for 12 weeks. Each subject will participate for approximately 20 weeks; dosing duration will be approximately 14 weeks.
NCT03047629
This is a Phase 1/2a study to assess the safety, tolerability, pharmacokinetics, and pharmacodynamics of an orally-administered medication to relieve symptoms of constipation associated with Parkinson's Disease. Ten patients will be enrolled in Phase 1, and will be studied over an 8-12 week period. Forty patients will be enrolled in Phase 2, and will be studied over an 8-10 week period. All subjects will receive the study drug during one of the observational periods of the study.
NCT01770145
This study is designed to assess the effect of APOKYN treatment in rapid and reliable improvement of motor symptoms in Parkinson's disease (PD) subjects suffering from delayed or unreliable onset of levodopa (L-dopa) action.
NCT04524351
Annovis is conducting a clinical study to investigate Posiphen in patients with Early Alzheimer's Disease (AD) and Early Parkinson's Disease (PD). Investigators are looking to recruit 68 patients in two parts of the study. In Part one of the study Investigators will recruit 14 AD and 14 PD patients who will either receive placebo (an inert pill which looks like the study drug) or the study drug Posiphen, both taken daily. In Part two of the study Investigators will recruit 40 PD patients who will receive different strengths of the study drug Posiphen taken daily. Patients will be required to come to the site for 3 face to face visits and have 4 phone calls, tests include but are not limited to, blood and CSF (spinal fluid) sampling, cognitive assessments, clinical examinations and laboratory safety tests. Primarily the Investigators are looking for the safety and tolerability of Posiphen, although Investigators will also evaluate the activity of Posiphen by a number of different biomarkers measuring pathway and target engagements.
NCT05094050
Parkinson's disease (PD) is a neurological condition, which means it affects the brain. This study will evaluate how ABBV-951 is absorbed under the skin of participants with PD when administered to arm, thigh and flank compared to the abdomen. ABBV-951 is an investigational drug being developed for the treatment of PD. Study doctors randomly assign participants to 1 of 4 groups, called treatment arms. Each treatment arm receives ABBV-951 administered in a different order in the arm, high, flank and abdomen. Approximately 12 adult participants over 30 years with a diagnosis of PD will be enrolled in approximately 10 sites in the United States. Participants will receive continuous (24hours/day) subcutaneous infusion of ABBV-951 for 2 consecutive days for each infusion site (arm, thigh, flank and abdomen), for a total duration of treatment up to 12 days. There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will be confined at a hospital or clinic. The effect of the treatment will be checked by medical assessments, blood tests, checking for side effects and completing questionnaires. Adverse events will be monitored throughout the study.
NCT04893083
This study aims to collect, analyze and preserve biospecimens from patients with or without LRRK2-associated Parkinson's Disease for the purpose of discovering and developing new treatments and novel biomarkers.
NCT03713957
This study will evaluate the safety, tolerability, and potential effects on cognition of GRF6021, a plasma-derived product, administered as an intravenous (IV) infusion, to subjects with Parkinson's disease and cognitive impairment.
NCT01071395
This study will evaluate the responsiveness of a variety of available dyskinesia rating scales to treatment with amantadine or placebo in Parkinson's disease patients with dyskinesia. The study will be a parallel, double-blind, randomized trial of 68 patients treated with amantadine or placebo for 8 weeks. Pre-treatment evaluations will be performed and compared to end of study evaluations on the best treatment dose (200 or 300 mg amantadine or matching placebo) daily. Safety evaluations will be conducted. The responsiveness of the different scales will be evaluated statistically with a mixed model in which changes in the outcome measures over time will include a fixed effect of treatment group assignment. The model will additionally account for random effects of intercepts (the scale scores at baseline) that will include both random variation (person-specific) and specific variation associated with rate of change in outcome. The investigators may include adjustments for possible confounding covariates, including baseline demographics and center. The goal of the program is to provide researchers with the best scale(s) to distinguish dyskinesia change in Parkinson's disease (PD) associated with amantadine in comparison to placebo and to establish the magnitude of effect achievable with amantadine as a comparator "gold standard" that must be met or surpassed by future anti-dyskinetic agents. Additionally, with the use of paper and pencil questionnaires, the study will investigate the impact of patient optimism and patient and rater expectation of positive effects on the dyskinesia rating outcomes.
NCT03007888
Primary Objective: To compare the pharmacokinetics (PK) of single and multiple doses of IPX203 with Immediate release carbidopa-levodopa (IR CD-LD) in subjects with advanced Parkinson's disease (PD). Secondary Objectives: To compare the pharmacodynamics of single and multiple doses of IPX203 with IR CD-LD. To compare the efficacy of IPX203 with IR CD-LD following multiple doses. To evaluate the safety of IPX203.
