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Showing 1–24 of 59 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Environmental Allergy Clear all
Completed Phase 3 Interventional

Mouse Allergen and Asthma Intervention Trial

NCT01251224
View directory record Official record
Conditions
Asthma, Mouse Allergy, Mouse Allergen Exposure
Interventions
Integrated Pest Management, Education
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
6 Years to 17 Years
Enrollment
361 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
2
States / cities
Baltimore, Maryland • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 15, 2017 · Synced Sep 7, 2026, 7:12 AM EDT
Recruiting No phase listed Observational

NHALES (Natural History of Asthma With Longitudinal Environmental Sampling)

NCT02327897
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years to 60 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2030
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 7, 2026, 7:12 AM EDT
Completed No phase listed Observational

Stress, Environment, and Genetics in Urban Children With Asthma

NCT00269256
View directory record Official record
Conditions
Asthma, Lung Diseases
Interventions
Not listed
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 50 Years
Enrollment
959 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 2, 2016 · Synced Sep 7, 2026, 7:12 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Personalized Environment and Genes Study

NCT00341237
View directory record Official record
Conditions
Diabetes, Heart Disease, Asthma
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years to 120 Years
Enrollment
25,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2010
U.S. locations
2
States / cities
Chapel Hill, North Carolina • Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Phase 2 Interventional Results available

Environmental Control as Add-on Therapy in Childhood Asthma

NCT02251379
View directory record Official record
Conditions
Asthma
Interventions
Flovent Diskus, Home Environmental Intervention, Advair Diskus
Drug · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
5 Years to 17 Years
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 19, 2019 · Synced Sep 7, 2026, 7:12 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pathogenesis and Genetics of Environmental Asthma Ozone Study

NCT00574158
View directory record Official record
Conditions
Asthma, Inflammation
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years to 35 Years
Enrollment
170 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 28, 2014 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Pesticide Exposure on Neurodevelopment/Growth/Respiratory Health

NCT00021658
View directory record Official record
Conditions
Environmental Exposure
Interventions
Pesticide application procedures
Procedure
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years and older · Female only
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2003
U.S. locations
1
States / cities
Salinas, California
Source: ClinicalTrials.gov public record
Updated Sep 28, 2014 · Synced Sep 7, 2026, 7:12 AM EDT
Active, not recruiting No phase listed Observational

Childhood Allergy and the Neonatal Environment

NCT04215783
View directory record Official record
Conditions
Asthma in Children, Allergy
Interventions
Not listed
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Not listed
Enrollment
499 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
4
States / cities
Detroit, Michigan • St Louis, Missouri • Nashville, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Not applicable Interventional

Environmental Tobacco Smoke Exposure Reduction in High-Risk Preteens

NCT00217893
View directory record Official record
Conditions
Lung Diseases, Asthma
Interventions
Counseling, Urine Cotinine Feedback, Contingent Incentives, Usual education program
Behavioral
Lead sponsor
San Diego State University
Other
Eligibility
8 Years to 13 Years
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Oct 23, 2013 · Synced Sep 7, 2026, 7:12 AM EDT
Recruiting Phase 2 Interventional

A Clinical Trial of Soluble Fiber for Asthma

NCT06372249
View directory record Official record
Conditions
Asthma in Children
Interventions
Inulin
Drug
Lead sponsor
Phoenix Children's Hospital
Other
Eligibility
6 Years to 17 Years
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Sep 7, 2026, 7:12 AM EDT
Completed No phase listed Observational Results available

Home Air Quality Impact for Adults With Asthma

NCT05224076
View directory record Official record
Conditions
Asthma, Environmental Exposure, Home Environment Related Disease
Interventions
Home Air Quality
Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 28, 2025 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Genetics of Environmental Asthma

NCT00018096
View directory record Official record
Conditions
Asthma
Interventions
LPS endotoxin, saline, HDM
Biological
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years to 40 Years
Enrollment
176 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2007
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 5, 2008 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Not applicable Interventional Results available

Effects of Reducing Indoor Air Pollution on the Adult Asthmatic Response

NCT02153359
View directory record Official record
Conditions
Asthma
Interventions
High Efficiency Particulate Air Cleaner, Sham air cleaner
Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 50 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 11, 2019 · Synced Sep 7, 2026, 7:12 AM EDT
Completed No phase listed Observational

An Observational Study of Childhood Food Allergy

NCT00356174
View directory record Official record
Conditions
Food Hypersensitivity, Peanut Hypersensitivity, Egg Hypersensitivity, Milk Hypersensitivity
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Months to 15 Months
Enrollment
515 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2016
U.S. locations
5
States / cities
Little Rock, Arkansas • Denver, Colorado • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2016 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Efficacy of AL-53817 Nasal Spray Solution

NCT01454505
View directory record Official record
Conditions
Nasal Allergies, Allergies
Interventions
AL-53817 nasal spray solution, Vehicle nasal spray
Drug · Other
Lead sponsor
Alcon Research
Industry
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated May 19, 2013 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Not applicable Interventional

A Study of Tobacco Smoke and Children With Respiratory Illnesses

NCT03062709
View directory record Official record
Conditions
Bronchiolitis, Pneumonia, Reactive Airway Disease, Asthma, Tobacco Smoking, Tobacco Cessation, Bronchopulmonary Dysplasia
Interventions
Breathe Easy Coalition written materials, Maine Tobacco Helpline, Urine cotinine testing
Behavioral · Diagnostic Test
Lead sponsor
MaineHealth
Other
Eligibility
Up to 10 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Portland, Maine
Source: ClinicalTrials.gov public record
Updated May 15, 2017 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Sustaining Smoking Cessation in Smokers With Kids With Asthma

NCT00862368
View directory record Official record
Conditions
Asthma, Smoking Cessation
Interventions
PAM, PAM-Enhanced/Asthma Counseling Phone Calls, Follow-Up Phone Calls - Child Wellness Topic
Behavioral
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years and older
Enrollment
573 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2011
U.S. locations
5
States / cities
Fall River, Massachusetts • Pawtucket, Rhode Island • Providence, Rhode Island + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 24, 2012 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Phase 3 Interventional

A Multi-Center Environmental Study for the Treatment of Moderate to Severe Ocular Allergic Conjunctivitis

NCT02492321
View directory record Official record
Conditions
Allergic Conjunctivitis (AC)
Interventions
EBI-005, Placebo Comparator
Drug
Lead sponsor
Eleven Biotherapeutics
Industry
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
11
States / cities
Morrow, Georgia • Louisville, Kentucky • Andover, Massachusetts + 8 more
Source: ClinicalTrials.gov public record
Updated Feb 10, 2016 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Environmental Intervention to Reduce Allergens in Urban Schools and Childhood Asthma

NCT01913795
View directory record Official record
Conditions
Asthma
Interventions
integrated pest management, air purifier, Sham air purifier
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
4 Years to 15 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 6, 2022 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Role of TLR4 in Environmental Asthma

NCT00671892
View directory record Official record
Conditions
Asthma
Interventions
Lipopolysaccharide endotoxin
Biological
Lead sponsor
John Sundy
Other
Eligibility
18 Years to 40 Years
Enrollment
855 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2008
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 15, 2013 · Synced Sep 7, 2026, 7:12 AM EDT
Completed Not applicable Interventional

Registry and Screening Tool to Identify Children With Asthma Likely to Benefit From Home Assessment and Remediation

NCT03916237
View directory record Official record
Conditions
Asthma, Pediatric ALL, School Health Services, Registries, Medical Informatics, Home Visits, Housing Problems, Social Determinants of Health, Healthcare Disparity, Health Status Disparity
Interventions
Home assessment, Home remediation, Referral to Medical Legal Partnership, Regular School Based Health Asthma Care
Other
Lead sponsor
MetroHealth Medical Center
Other
Eligibility
5 Years to 17 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 18, 2023 · Synced Sep 7, 2026, 7:12 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Environmental Polymorphisms Registry Health and Exposures Survey

NCT01688986
View directory record Official record
Conditions
Diabetes, Heart Disease, Asthma
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years and older
Enrollment
9,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 30, 2018 · Synced Sep 7, 2026, 7:12 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Proteomics of Cerebrospinal Fluid in Chronic Fatigue Syndrome

NCT00810329
View directory record Official record
Conditions
Chronic Fatigue Syndrome, Fibromyalgia, Gulf War Illness, Multiple Chemical Sensitivity, Interstitial Cystitis, Irritable Bowel Syndrome
Interventions
Not listed
Lead sponsor
Georgetown University
Other
Eligibility
21 Years to 65 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 24, 2014 · Synced Sep 7, 2026, 7:12 AM EDT
Not listed Not applicable Interventional

Houston "Breathe Easy" Healthy Homes-Based Model for Multifamily Rental Communities

NCT05345080
View directory record Official record
Conditions
Asthma, Respiratory Tract Disease, Lung Diseases, Sinusitis, Chronic
Interventions
Exposure-Reduction Intervention
Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 5, 2022 · Synced Sep 7, 2026, 7:12 AM EDT