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Showing 1–24 of 154 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Olfactory Disorder Clear all
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Longitudinal At Home Smell Testing to Detect Infection by SARS-CoV-2

NCT05040659
View directory record Official record
Conditions
Anosmia, Asymptomatic COVID-19, COVID-19 Respiratory Infection, Influenza, Healthy, PASC Post Acute Sequelae of COVID 19
Interventions
AROMHA Longitudinal Smell Test
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 100 Years
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Sep 5, 2026, 4:44 PM EDT
Recruiting Phase 2Phase 3 Interventional

Study of Chemosensory Enhancement Through Neuromodulation Training (SCENT for Long COVID)

NCT05855369
View directory record Official record
Conditions
Smell Dysfunction, Olfactory Disorder, Long COVID
Interventions
Trigeminal Nerve Stimulation (TNS), Active Smell Training (ST), Placebo Smell Training (PBO)
Device · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Not applicable Interventional

Gefitinib in Treating Patients With Metastatic or Unresectable Head and Neck Cancer or Non-Small Cell Lung Cancer

NCT00068497
View directory record Official record
Conditions
Anaplastic Thyroid Cancer, Insular Thyroid Cancer, Metastatic Parathyroid Cancer, Recurrent Adenoid Cystic Carcinoma of the Oral Cavity, Recurrent Basal Cell Carcinoma of the Lip, Recurrent Esthesioneuroblastoma of the Paranasal Sinus and Nasal Cavity, Recurrent Inverted Papilloma of the Paranasal Sinus and Nasal Cavity, Recurrent Lymphoepithelioma of the Nasopharynx, Recurrent Lymphoepithelioma of the Oropharynx, Recurrent Metastatic Squamous Neck Cancer With Occult Primary, Recurrent Midline Lethal Granuloma of the Paranasal Sinus and Nasal Cavity, Recurrent Mucoepidermoid Carcinoma of the Oral Cavity, Recurrent Non-small Cell Lung Cancer, Recurrent Parathyroid Cancer, Recurrent Salivary Gland Cancer, Recurrent Squamous Cell Carcinoma of the Hypopharynx, Recurrent Squamous Cell Carcinoma of the Larynx, Recurrent Squamous Cell Carcinoma of the Lip and Oral Cavity, Recurrent Squamous Cell Carcinoma of the Nasopharynx, Recurrent Squamous Cell Carcinoma of the Oropharynx, Recurrent Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity, Recurrent Thyroid Cancer, Recurrent Verrucous Carcinoma of the Larynx, Stage III Follicular Thyroid Cancer, Stage III Papillary Thyroid Cancer, Stage III Salivary Gland Cancer, Stage III Squamous Cell Carcinoma of the Hypopharynx, Stage III Squamous Cell Carcinoma of the Larynx, Stage III Verrucous Carcinoma of the Larynx, Stage IIIB Non-small Cell Lung Cancer, Stage IV Lymphoepithelioma of the Nasopharynx, Stage IV Non-small Cell Lung Cancer, Stage IV Squamous Cell Carcinoma of the Hypopharynx, Stage IV Squamous Cell Carcinoma of the Nasopharynx, Stage IVA Adenoid Cystic Carcinoma of the Oral Cavity, Stage IVA Basal Cell Carcinoma of the Lip, Stage IVA Esthesioneuroblastoma of the Paranasal Sinus and Nasal Cavity, Stage IVA Follicular Thyroid Cancer, Stage IVA Inverted Papilloma of the Paranasal Sinus and Nasal Cavity, Stage IVA Lymphoepithelioma of the Oropharynx, Stage IVA Midline Lethal Granuloma of the Paranasal Sinus and Nasal Cavity, Stage IVA Mucoepidermoid Carcinoma of the Oral Cavity, Stage IVA Papillary Thyroid Cancer, Stage IVA Salivary Gland Cancer, Stage IVA Squamous Cell Carcinoma of the Larynx, Stage IVA Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage IVA Squamous Cell Carcinoma of the Oropharynx, Stage IVA Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity, Stage IVA Verrucous Carcinoma of the Larynx, Stage IVA Verrucous Carcinoma of the Oral Cavity, Stage IVB Adenoid Cystic Carcinoma of the Oral Cavity, Stage IVB Basal Cell Carcinoma of the Lip, Stage IVB Esthesioneuroblastoma of the Paranasal Sinus and Nasal Cavity, Stage IVB Follicular Thyroid Cancer, Stage IVB Inverted Papilloma of the Paranasal Sinus and Nasal Cavity, Stage IVB Lymphoepithelioma of the Oropharynx, Stage IVB Midline Lethal Granuloma of the Paranasal Sinus and Nasal Cavity, Stage IVB Mucoepidermoid Carcinoma of the Oral Cavity, Stage IVB Papillary Thyroid Cancer, Stage IVB Salivary Gland Cancer, Stage IVB Squamous Cell Carcinoma of the Larynx, Stage IVB Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage IVB Squamous Cell Carcinoma of the Oropharynx, Stage IVB Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity, Stage IVB Verrucous Carcinoma of the Larynx, Stage IVB Verrucous Carcinoma of the Oral Cavity, Stage IVC Adenoid Cystic Carcinoma of the Oral Cavity, Stage IVC Basal Cell Carcinoma of the Lip, Stage IVC Esthesioneuroblastoma of the Paranasal Sinus and Nasal Cavity, Stage IVC Follicular Thyroid Cancer, Stage IVC Inverted Papilloma of the Paranasal Sinus and Nasal Cavity, Stage IVC Lymphoepithelioma of the Oropharynx, Stage IVC Midline Lethal Granuloma of the Paranasal Sinus and Nasal Cavity, Stage IVC Mucoepidermoid Carcinoma of the Oral Cavity, Stage IVC Papillary Thyroid Cancer, Stage IVC Salivary Gland Cancer, Stage IVC Squamous Cell Carcinoma of the Larynx, Stage IVC Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage IVC Squamous Cell Carcinoma of the Oropharynx, Stage IVC Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity, Stage IVC Verrucous Carcinoma of the Larynx, Stage IVC Verrucous Carcinoma of the Oral Cavity, Thryoid Gland Nonmedullary Carcinoma, Thyroid Gland Medullary Carcinoma, Tongue Cancer, Untreated Metastatic Squamous Neck Cancer With Occult Primary
Interventions
gefitinib
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jan 13, 2013 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Not applicable Interventional

Physician-Initiated Stop-Smoking Program for Patients Receiving Treatment for Early-Stage Cancer

NCT00002520
View directory record Official record
Conditions
Bladder Cancer, Breast Cancer, Colorectal Cancer, Head and Neck Cancer, Lung Cancer, Lymphoma, Prostate Cancer, Testicular Germ Cell Tumor, Tobacco Use Disorder, Unspecified Adult Solid Tumor, Protocol Specific
Interventions
nicotine, Usual Care
Drug · Behavioral
Lead sponsor
Eastern Cooperative Oncology Group
Network
Eligibility
19 Years to 120 Years
Enrollment
434 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1990
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 14, 2023 · Synced Sep 5, 2026, 4:44 PM EDT
Completed No phase listed Observational

Olfactory Dysfunction of Rhinosinusitis - Cyclic Adenosine Monophosphate (cAMP)/Calcium Signaling Study

NCT00970190
View directory record Official record
Conditions
Sinusitis
Interventions
Not listed
Lead sponsor
Greg Davis
Other
Eligibility
18 Years and older
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 10, 2014 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Phase 2 Interventional Results available

Phase 2 Study of Bintrafusp Alfa in Recurrent/Metastatic Olfactory Neuroblastoma (BARON).

NCT05012098
View directory record Official record
Conditions
Olfactory Neuroblastoma, Esthesioneuroblastoma, Neoplasm of the Nasal Cavity
Interventions
Bintrafusp alfa/M7824, Ibuprofen, PET scan, CT scan, Tumor tissue biopsy, Brain MRI, Dotate scan, PET FDG scan, Nuclear bone scan, EKG
Drug · Diagnostic Test · Procedure
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 7, 2025 · Synced Sep 5, 2026, 4:44 PM EDT
Terminated Phase 3 Interventional Results available

NAC for Head Trauma-induced Anosmia

NCT03680911
View directory record Official record
Conditions
Anosmia, Head Trauma
Interventions
N Acetyl Cysteine, Placebo oral capsule
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Feb 3, 2021 · Synced Sep 5, 2026, 4:44 PM EDT
Withdrawn No phase listed Observational

Esthesioneuroblastoma: Outcomes After Treatment

NCT02580136
View directory record Official record
Conditions
Esthesioneuroblastoma, Olfactory
Interventions
Not listed
Lead sponsor
Ricardo L. Carrau, MD
Other
Eligibility
10 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 10, 2021 · Synced Sep 5, 2026, 4:44 PM EDT
Recruiting Phase 1 Interventional

[212Pb]VMT-Alpha-NET in Metastatic or Inoperable Somatostatin-Receptor Positive Gastrointestinal Neuroendocrine Tumors, Pheochromocytoma/Paragangliomas, Small Cell Lung, Renal Cell, and Head and Neck Cancers

NCT06479811
View directory record Official record
Conditions
Sinonasal Neuroendocrine Carcinoma, Nasopharyngeal Carcinoma, Esthesioneuroblastoma, Olfactory Neuroblastoma, Somatostatin Receptor Positive, Small Cell Lung Cancers, Pheochromocytoma/Paragangliomas, Kidney Cancers, Head and Neck Tumors, Gastrointestinal Neuroendocrine Tumors
Interventions
68Ga-DOTATATE, [203Pb]VMT-alpha-NET, [212Pb]VMT-alpha-NET
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 120 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2032
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Phase 1 Interventional

Pemetrexed Disodium and Docetaxel in Treating Patients With Advanced Solid Tumors

NCT01172028
View directory record Official record
Conditions
Breast Cancer, Esophageal Cancer, Gastric Cancer, Head and Neck Cancer, Lung Cancer, Ovarian Cancer, Prostate Cancer
Interventions
Taxotere (Docetaxel), Alimta (Pemetrexed)
Drug
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2014
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 2, 2015 · Synced Sep 5, 2026, 4:44 PM EDT
Terminated Phase 1 Interventional

Indium In 111 Pentetreotide in Treating Patients With Refractory Cancer

NCT00002947
View directory record Official record
Conditions
Brain and Central Nervous System Tumors, Childhood Langerhans Cell Histiocytosis, Gastrointestinal Carcinoid Tumor, Head and Neck Cancer, Intraocular Melanoma, Islet Cell Tumor, Kidney Cancer, Lung Cancer, Melanoma (Skin), Neoplastic Syndrome, Neuroendocrine Carcinoma of the Skin, Pheochromocytoma
Interventions
indium In 111 pentetreotide
Radiation
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2004
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 1, 2014 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Phase 3 Interventional

Megestrol to Limit Weight Loss and Improve Quality of Life in Treating Patients With Head and Neck Cancer

NCT00006799
View directory record Official record
Conditions
Anorexia, Cachexia, Head and Neck Cancer, Quality of Life
Interventions
megestrol acetate, quality-of-life assessment
Drug · Procedure
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 120 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2002
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 8, 2021 · Synced Sep 5, 2026, 4:44 PM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

In Vivo Imaging of the Olfactory Epithelium Using Confocal Laser Endomicroscopy

NCT07546617
View directory record Official record
Conditions
Endonasal Surgery, Endoscopic Sinus Surgery, Olfactory Dysfunction
Interventions
CONVIVO system, Fluorescein injection, USP 10%
Device · Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Phase 2 Interventional

Paclitaxel and Cisplatin Plus Radiation Therapy Followed by Filgrastim in Treating Patients With Recurrent Head and Neck Cancer or Lung Cancer

NCT00021333
View directory record Official record
Conditions
Head and Neck Cancer, Lung Cancer
Interventions
filgrastim, cisplatin, paclitaxel, radiation therapy
Biological · Drug · Radiation
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2008
U.S. locations
18
States / cities
Flemington, New Jersey • Lakewood, New Jersey • Millville, New Jersey + 15 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2013 · Synced Sep 5, 2026, 4:44 PM EDT
Terminated Not applicable Interventional

Mindfulness-Based Stress Reduction Versus Lifestyle Intervention for Long-Haul Covid-19 Parosmia

NCT06789952
View directory record Official record
Conditions
COVID-19
Interventions
Mindfulness-Based Stress Reduction, Lifestyle Intervention
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 22, 2025 · Synced Sep 5, 2026, 4:44 PM EDT
Completed No phase listed Observational Results available

Validation of a Rapid Quantitative Test for Loss of Smell in COVID-19 Subjects

NCT04431908
View directory record Official record
Conditions
COVID-19
Interventions
olfactory device
Device
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
1,320 participants
Timeline
2020
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 1, 2021 · Synced Sep 5, 2026, 4:44 PM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

Impact of Smell Testing on Health Outcomes

NCT07222891
View directory record Official record
Conditions
Olfactory Dysfunction, Wellbeing
Interventions
Patient-centered information and education
Behavioral
Lead sponsor
Monell Chemical Senses Center
Other
Eligibility
7 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced Sep 5, 2026, 4:44 PM EDT
Completed No phase listed Observational

Decrease in Sense of Smell and Associated Cognitive Decline in Parkinson's Disease

NCT01572142
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
50 Years and older
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 28, 2017 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Not applicable Interventional Results available

Smell, Voice and Nasal Swabs as Markers for Neuro-degenerative Disorders

NCT03299062
View directory record Official record
Conditions
Alzheimer Disease, Neurodegenerative Diseases
Interventions
Cytology and Immunohistochemistry
Diagnostic Test
Lead sponsor
University of Arkansas
Other
Eligibility
19 Years to 89 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Nov 24, 2022 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Not applicable Interventional

At-Home Olfactory Training

NCT03611673
View directory record Official record
Conditions
Olfactory Disorder
Interventions
Smell Test
Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 19, 2023 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Olfactory Decision-making and Deprived Sleep

NCT05093413
View directory record Official record
Conditions
Sleep Deprivation
Interventions
Sleep deprivation
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 12, 2022 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Phase 1 Interventional

MS-275 in Treating Patients With Advanced Solid Tumors or Lymphoma

NCT00020579
View directory record Official record
Conditions
Cancer
Interventions
entinostat
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2008
U.S. locations
3
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 14, 2012 · Synced Sep 5, 2026, 4:44 PM EDT
Completed Phase 2 Interventional Results available

Gemcitabine and Doxorubicin in Treating Patients With Recurrent or Progressive Head and Neck Cancer

NCT00509665
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
doxorubicin hydrochloride, gemcitabine hydrochloride
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 120 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 11, 2018 · Synced Sep 5, 2026, 4:44 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Tissue Sample Collection From Patients With Head and Neck Cancer and From Healthy Participants

NCT00898638
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
biologic sample preservation procedure, medical chart review
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
8,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2050
U.S. locations
4
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 27, 2025 · Synced Sep 5, 2026, 4:44 PM EDT