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ClinicalTrials.gov public records Last synced May 21, 2026, 11:55 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 104 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Phonation Disorder Clear all
Completed Not applicable Interventional
View directory record Official record
Conditions
Vocal Cord Paralysis Unilateral, Dysphonia, Dysphagia, Oropharyngeal
Interventions
Silk Microparticle Filler Injection
Procedure
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 9, 2023 · Synced May 21, 2026, 11:55 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Vocal Fatigue, Treatment
Interventions
Cardiovascular Conditioning Protocol, Voice Production Exercises
Behavioral · Other
Lead sponsor
East Tennessee State University
Other
Eligibility
21 Years to 60 Years · Female only
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Johnson City, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 17, 2023 · Synced May 21, 2026, 11:55 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Dysphonia Resulting From Vocal Fold Scarring, Age-related Dysphonia
Interventions
Azficel-T (autologous fibroblasts), Placebo
Biological · Drug
Lead sponsor
Castle Creek Biosciences, LLC.
Industry
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
3
States / cities
Los Angeles, California • Stanford, California • New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 2, 2021 · Synced May 21, 2026, 11:55 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Deglutition Disorder, Healthy
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Up to 90 Years
Enrollment
155 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 1999
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced May 21, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Spasmodic Dysphonia
Interventions
Laryngeal Vibration (Treatment), Laryngeal Vibration (Comparator)
Device
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 75 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 3, 2025 · Synced May 21, 2026, 11:55 PM EDT
Withdrawn Phase 2 Interventional
View directory record Official record
Conditions
Adductor Spasmodic Dysphonia, Abductor Spastic Dysphonia, Laryngeal Dystonia
Interventions
vibro-tactile stimulation (VTS)
Device
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 15, 2025 · Synced May 21, 2026, 11:55 PM EDT
Completed Phase 1Phase 2 Interventional Results available
View directory record Official record
Conditions
Adductor Spasmodic Dysphonia, Voice Disorders, Spasmodic Dysphonia
Interventions
DaxibotulinumtoxinA
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced May 21, 2026, 11:55 PM EDT
Not yet recruiting Not applicable Interventional
View directory record Official record
Conditions
Presbylarynx, Aspiration, Spasmodic Dysphonia, Globus Pharyngeus, Larynx Paralysis, Laryngeal Disease, Vocal Cord Paralysis, Iatrogenic Injury, Sensory Neuropathy
Interventions
Cheung-Bearelly Aesthesiometer, Transnasal Laryngoscopy, Questionnaires
Device · Procedure · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 85 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 22, 2025 · Synced May 21, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Voice Disorder
Interventions
voice hygiene, VH + VP
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
21 Years to 40 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 24, 2016 · Synced May 21, 2026, 11:55 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Parkinson Disease, Atypical Parkinsonism
Interventions
Behavioral speech strategies + speech amplification
Behavioral
Lead sponsor
Michigan State University
Other
Eligibility
50 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
East Lansing, Michigan
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced May 21, 2026, 11:55 PM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Phonation Disorder, Spastic Dysphonia, Voice Disorder
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
20 Years to 80 Years
Enrollment
370 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1998
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced May 21, 2026, 11:55 PM EDT
Completed Phase 3 Interventional
View directory record Official record
Conditions
Phonotrauma
Interventions
Lessac-Madsen Resonant Voice Therapy, Casper-Based Confidential Flow Therapy
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
21 Years and older
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
2
States / cities
Boston, Massachusetts • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 24, 2016 · Synced May 21, 2026, 11:55 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Presbylarynx, Atrophy; Larynx, Dysphonia, Vocal Cord Atrophy, Presbylarynges, Vocal Fold Scar, Sulcus Vocalis of Vocal Cord
Interventions
Serial PRP injections
Procedure
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 9, 2023 · Synced May 21, 2026, 11:55 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Spasmodic Dysphonia, Dystonia
Interventions
Vocal Exercise
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 2, 2016 · Synced May 21, 2026, 11:55 PM EDT
Completed Phase 1Phase 2 Interventional Results available
View directory record Official record
Conditions
Essential Voice Tremor, Vocal Tremor, Voice Tremor, Essential Tremor of Voice
Interventions
Octanoic acid, Inactive capsule
Drug
Lead sponsor
Syracuse University
Other
Eligibility
21 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Aug 19, 2018 · Synced May 21, 2026, 11:55 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Cognitive Impairment, Voice Disorders, Voicebox Disorders, Cognitive Decline, Swallowing Disorder
Interventions
Speech Therapy, Swallowing Therapy, Upper Airway Therapy
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
60 Years to 110 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
4
States / cities
San Francisco, California • Atlanta, Georgia • New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 25, 2023 · Synced May 21, 2026, 11:55 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Laryngeal Dystonia
Interventions
Vibrotactile Stimulation (VTS)
Device
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced May 21, 2026, 11:55 PM EDT
Terminated Not applicable Interventional
View directory record Official record
Conditions
Voice Disorders, Gastroesophageal Reflux
Interventions
Neuromuscular Electrical Stimulation, Unstimulated
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
6 Years to 11 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 13, 2015 · Synced May 21, 2026, 11:55 PM EDT
Recruiting Early Phase 1 Interventional
View directory record Official record
Conditions
Voice Disorders, Vocal Fold Polyp, Vocal Nodules in Adults, Muscle Tension Dysphonia
Interventions
Ambulatory Voice Monitoring with Biofeedback (AVM-B), Conversation Training Therapy
Device · Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 10, 2025 · Synced May 21, 2026, 11:55 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Dysphonia, Primary Muscle Tension Dysphonia (MTD)
Interventions
Hierarchical method, Non Hierarchical method
Other
Lead sponsor
Emory University
Other
Eligibility
16 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 19, 2025 · Synced May 21, 2026, 11:55 PM EDT
Recruiting Phase 4 Interventional
View directory record Official record
Conditions
Laryngopharyngeal Reflux, Cough, Throat Clearing, Dysphonia, Reflux
Interventions
Omeprazole 40 MG, Laryngeal Recalibration Therapy, GERD Lifestyle Recommendations
Drug · Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 89 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
San Deigo, California
Source: ClinicalTrials.gov public record
Updated Jul 31, 2025 · Synced May 21, 2026, 11:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Spastic Dysphonia, Healthy
Interventions
airway interruption test
Device
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced May 21, 2026, 11:55 PM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Voice Disorders
Interventions
Dextromethorphan, Lorazepam
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years to 80 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced May 21, 2026, 11:55 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Communication Disorder, Healthy, Stuttering, Tourette Syndrome, Voice Disorder
Interventions
Not listed
Lead sponsor
National Institute on Deafness and Other Communication Disorders (NIDCD)
NIH
Eligibility
18 Years to 85 Years
Enrollment
1,163 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 16, 2019 · Synced May 21, 2026, 11:55 PM EDT