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ClinicalTrials.gov public records Last synced Oct 1, 2026, 9:50 AM EDT

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Showing 25–48 of 354 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Primary Dysautonomias Clear all
Completed No phase listed Observational

The Identification and Characterization of Autonomic Dysfunction in Migraineurs With and Without Auras

NCT01080287
View directory record Official record
Conditions
Migraine
Interventions
Not listed
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 22, 2012 · Synced Oct 1, 2026, 9:50 AM EDT
Completed Phase 3 Interventional Results available

Clinical Effect of Ampreloxetine (TD-9855) for Treating Symptomatic nOH in Subjects With Primary Autonomic Failure

NCT03750552
View directory record Official record
Conditions
Symptomatic Neurogenic Orthostatic Hypotension
Interventions
ampreloxetine, Placebo
Drug
Lead sponsor
Theravance Biopharma
Industry
Eligibility
30 Years and older
Enrollment
195 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
23
States / cities
Sun City, Arizona • Long Beach, California • Palo Alto, California + 19 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2022 · Synced Oct 1, 2026, 9:50 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Upper- and Lower-body Resistance Exercise With and Without Blood Flow Restriction on Hemodynamics and Vascular Function

NCT03225898
View directory record Official record
Conditions
Endothelial Dysfunction, Autonomic Dysfunction
Interventions
Resistance Exercise with Blood Flow Restriction, High-intensity Resistance Exercise
Other
Lead sponsor
Kent State University
Other
Eligibility
18 Years to 30 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Kent, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 24, 2017 · Synced Oct 1, 2026, 9:50 AM EDT
Recruiting No phase listed Observational

Modifiable Variables in Parkinsonism (MVP)

NCT02194816
View directory record Official record
Conditions
Parkinson's Disease, Parkinsonism, MSA - Multiple System Atrophy, Progressive Supranuclear Palsy, Shy-Drager Syndrome, Corticobasal Degeneration, Dementia With Lewy Bodies, Pick Disease, Olivopontocerebellar Atrophies
Interventions
Not listed
Lead sponsor
Bastyr University
Other
Eligibility
19 Years and older
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2030
U.S. locations
1
States / cities
Kenmore, Washington
Source: ClinicalTrials.gov public record
Updated Mar 25, 2022 · Synced Oct 1, 2026, 9:50 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

PET Scan in Patients With Neurocardiologic Disorders

NCT00001418
View directory record Official record
Conditions
Autonomic Nervous System Diseases
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
335 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1994 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 1, 2026, 9:50 AM EDT
Terminated Not applicable Interventional

Impedance Threshold Device Tilt Study

NCT00137319
View directory record Official record
Conditions
Orthostatic Hypotension
Interventions
Impedance threshold device
Device
Lead sponsor
United States Army Institute of Surgical Research
Federal
Eligibility
18 Years to 65 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Fort Sam Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 22, 2015 · Synced Oct 1, 2026, 9:50 AM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety Study of Efgartigimod in Adults With Post-COVID-19 POTS

NCT05633407
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Efgartigimod, Placebo
Drug
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
11
States / cities
La Jolla, California • Palo Alto, California • Glenview, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated May 23, 2025 · Synced Oct 1, 2026, 9:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Parkinson's Autonomic Responses to Treadmill Walking

NCT03156400
View directory record Official record
Conditions
Parkinson Disease, Autonomic Dysfunction
Interventions
Exercise Stress Test
Other
Lead sponsor
University of Miami
Other
Eligibility
50 Years to 85 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Coral Gables, Florida
Source: ClinicalTrials.gov public record
Updated Jul 6, 2018 · Synced Oct 1, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

The Renin-Aldosterone Axis in Postural Tachycardia Syndrome

NCT00962949
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome (POTS)
Interventions
Angiotensin II
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 64 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 16, 2025 · Synced Oct 1, 2026, 9:50 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Diagnostic and Prognostic Biomarkers in Parkinson Disease

NCT00653783
View directory record Official record
Conditions
Parkinson Disease, Multiple System Atrophy, Progressive Supranuclear Palsy
Interventions
Not listed
Lead sponsor
The Parkinson Study Group
Network
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 31, 2008 · Synced Oct 1, 2026, 9:50 AM EDT
Active, not recruiting Phase 2 Interventional

A Phase 2 Study of ONO-2808 in Patients With Multiple System Atrophy

NCT05923866
View directory record Official record
Conditions
Multiple System Atrophy (MSA)
Interventions
ONO-2808, Placebo
Drug
Lead sponsor
Ono Pharmaceutical Co., Ltd.
Industry
Eligibility
30 Years to 80 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
30
States / cities
Fountain Valley, California • Los Angeles, California • Palo Alto, California + 23 more
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Oct 1, 2026, 9:50 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

[18F]F-DOPA Imaging in Patients With Autonomic Failure

NCT04246437
View directory record Official record
Conditions
Autonomic Failure, Pure Autonomic Failure, Parkinson Disease, Multiple System Atrophy, Dementia With Lewy Bodies
Interventions
[18F]FDOPA, Carbidopa 200mg oral dose, Entacapone 400mg oral dose
Drug
Lead sponsor
Daniel Claassen
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 16, 2026 · Synced Oct 1, 2026, 9:50 AM EDT
Completed Phase 3 Interventional Results available

The Effects Of Bronchodilator Therapy On Respiratory And Autonomic Function In Patients With Familial Dysautonomia

NCT01987219
View directory record Official record
Conditions
Familial Dysautonomia
Interventions
Albuterol-sulphate, Ipratropium-bromide, placebo
Drug · Other
Lead sponsor
NYU Langone Health
Other
Eligibility
12 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 2, 2016 · Synced Oct 1, 2026, 9:50 AM EDT
Completed Phase 3 Interventional Results available

Open-Label Clinical Study of Droxidopa in Patients With Neurogenic Orthostatic Hypotension (NOH)

NCT00738062
View directory record Official record
Conditions
Neurogenic Orthostatic Hypotension, Non-Diabetic Autonomic Neuropathy, Multiple System Atrophy, Dopamine Beta Hydroxylase Deficiency
Interventions
Droxidopa, Placebo
Drug
Lead sponsor
Chelsea Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
44
States / cities
Birmingham, Alabama • Litchfield Park, Arizona • Phoenix, Arizona + 39 more
Source: ClinicalTrials.gov public record
Updated May 16, 2014 · Synced Oct 1, 2026, 9:50 AM EDT
Active, not recruiting Not applicable Interventional

Water and the Gastropressor Response - Diurnal Variability

NCT00581373
View directory record Official record
Conditions
Orthostatic Hypotension
Interventions
water 16 fl oz
Other
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Oct 1, 2026, 9:50 AM EDT
Recruiting Not applicable Interventional

VCOM Pain Free Research Collaborative

NCT06533345
View directory record Official record
Conditions
Chronic Pain
Interventions
Behavior Change Coaching, Nutrition, Autonomic Recalibration, Dry Needling, Osteopathic Manipulative Treatment, Counseling Psychology, Multiple Treatments
Behavioral · Other · Procedure
Lead sponsor
Edward Via Virginia College of Osteopathic Medicine
Other
Eligibility
21 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated Feb 20, 2026 · Synced Oct 1, 2026, 9:50 AM EDT
Completed Phase 4 Interventional Results available

Sustained Effect of Droxidopa in Symptomatic Neurogenic Orthostatic Hypotension

NCT02586623
View directory record Official record
Conditions
Symptomatic Neurogenic Orthostatic Hypotension
Interventions
Droxidopa capsules, Placebo capsules
Drug
Lead sponsor
H. Lundbeck A/S
Industry
Eligibility
18 Years and older
Enrollment
453 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
168
States / cities
Chandler, Arizona • Phoenix, Arizona • Scottsdale, Arizona + 103 more
Source: ClinicalTrials.gov public record
Updated Aug 23, 2023 · Synced Oct 1, 2026, 9:50 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

Treatment of Orthostatic Hypotension

NCT00581477
View directory record Official record
Conditions
Autonomic Nervous System Diseases, Orthostatic Hypotension, Dopamine Beta-Hydroxylase Deficiency, Orthostatic Intolerance
Interventions
Droxidopa Oral Product
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 70 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 2, 2022 · Synced Oct 1, 2026, 9:50 AM EDT
Completed No phase listed Observational

Clinical Laboratory Evaluation of Chronic Autonomic Failure

NCT03648905
View directory record Official record
Conditions
Parkinson's Disease, Multiple System Atrophy, Autonomic Failure
Interventions
13N-Ammonia, 18F-DOPA, 11C-Methylreboxetine (11C-MRB), 18F-Dopamine
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years to 120 Years
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 1, 2026, 9:50 AM EDT
Recruiting Not applicable Interventional

Treatment of Supine Hypertension in Autonomic Failure (CPAP)

NCT03312556
View directory record Official record
Conditions
Supine Hypertension, Autonomic Failure
Interventions
continuous positive airway pressure (CPAP), Placebo
Device · Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 85 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 6, 2025 · Synced Oct 1, 2026, 9:50 AM EDT
Completed Not applicable Interventional Results available

A Pilot Study of Switching From One Pain Medication to Another (Opioid Rotation)

NCT00580294
View directory record Official record
Conditions
Pain
Interventions
Oxymorphone
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 3, 2016 · Synced Oct 1, 2026, 9:50 AM EDT
Completed No phase listed Observational

Pre-Gene Therapy Study in Parkinson's Disease and Multiple System Atrophy

NCT05699460
View directory record Official record
Conditions
Parkinson's Disease, Multiple System Atrophy, Parkinson Variant, Multiple System Atrophy
Interventions
This is an observational study.
Other
Lead sponsor
AskBio Inc
Industry
Eligibility
35 Years to 75 Years
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
7
States / cities
Irvine, California • Boca Raton, Florida • Boston, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Oct 1, 2026, 9:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Advancing Understanding of Transportation Options

NCT04141891
View directory record Official record
Conditions
Diabetic Retinopathy, Macular Degeneration, Glaucoma, Retinitis Pigmentosa, Vision Disorders, Acute Coronary Syndrome, Implantable Defibrillator User, Congestive Heart Failure, Hypertrophic Obstructive Cardiomyopathy, Orthostatic Hypotension, Syncope, Presyncope, Narcolepsy, Dementia, Multiple Sclerosis, Parkinson Disease, Brain Injuries, Spinal Cord Injuries, Stroke, Vertigo, Dizziness, Seizures, Substance Use, Insulin Dependent Diabetes Mellitus, Arthritis, Foot--Abnormalities, Chronic Obstructive Pulmonary Disease, Obstructive Sleep Apnea, End Stage Renal Disease, Sleep Apnea, Insomnia, Restless Legs Syndrome
Interventions
Driving Decision Aid, Older Drivers Website
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
529 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
3
States / cities
La Jolla, California • Aurora, Colorado • Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 21, 2025 · Synced Oct 1, 2026, 9:50 AM EDT
Recruiting Phase 2 Interventional

A Study of Pyridostigmine in Postural Tachycardia Syndrome

NCT00409435
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
pyridostigmine, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
15 Years to 55 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Oct 1, 2026, 9:50 AM EDT