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Showing 1–24 of 85 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Alpha1-proteinase Inhibitor Deficiency Clear all
Completed No phase listed Observational Results available

Alpha-1 Carrier Genomics Study

NCT02810327
View directory record Official record
Conditions
Alpha-1 Antitrypsin Deficiency, Emphysema, COPD, Smoking
Interventions
Genetic Sequencing
Genetic
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 21, 2019 · Synced Sep 21, 2026, 3:56 PM EDT
Active, not recruiting Phase 3 Interventional

An Extension Study to Learn About the Long-Term Safety of Fazirsiran and if Fazirsiran Can Help People With Alpha-1 Antitrypsin Liver Disease

NCT05899673
View directory record Official record
Conditions
Alpha1-Antitrypsin Deficiency
Interventions
Fazirsiran Injection
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2033
U.S. locations
5
States / cities
La Jolla, California • Redwood City, California • Gainesville, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2025 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Safety Dose Finding Study of ADVM-043 Gene Therapy to Treat Alpha-1 Antitrypsin (A1AT) Deficiency

NCT02168686
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency
Interventions
ADVM-043
Genetic
Lead sponsor
Adverum Biotechnologies, Inc.
Industry
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
2
States / cities
Gainesville, Florida • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 4, 2023 · Synced Sep 21, 2026, 3:56 PM EDT
Suspended No phase listed Observational

Longitudinal Study of Genetic Causes of Intrahepatic Cholestasis (LOGIC)

NCT00571272
View directory record Official record
Conditions
Liver Diseases, Alagille Syndrome, Alpha 1-Antitrypsin Deficiency
Interventions
Not listed
Lead sponsor
Arbor Research Collaborative for Health
Other
Eligibility
Up to 25 Years
Enrollment
1,675 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2029
U.S. locations
16
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 1Phase 2 Interventional

Study of the Effect of Aerosolized, Recombinant Alpha 1-Antitrypsin on Epithelial Lining Fluid Analytes in Subjects With Alpha 1-Antitrypsin Deficiency

NCT00157092
View directory record Official record
Conditions
Alpha1-antitrypsin Deficiency
Interventions
Aerosolized, Recombinant Alpha 1-Antitrypsin
Drug
Lead sponsor
Baxalta now part of Shire
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated May 4, 2021 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 1Phase 2 Interventional

A Study to Evaluate Safety, Tolerability and Pharmacokinetics of Two Different Doses of Alpha1-Proteinase Inhibitor Subcutaneous (Human) 15% in Participants With Alpha1-Antitrypsin Deficiency

NCT04722887
View directory record Official record
Conditions
Alpha1-Antitrypsin Deficiency
Interventions
Alpha-1 15%, Liquid Alpha1-Proteinase Inhibitor (Human)
Biological
Lead sponsor
Grifols Therapeutics LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
5
States / cities
Los Angeles, California • Gainesville, Florida • Miami, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 11, 2025 · Synced Sep 21, 2026, 3:56 PM EDT
Terminated Phase 2 Interventional Results available

A Study to Evaluate Efficacy and Safety of VX-864 in Participants With the PiZZ Genotype

NCT05643495
View directory record Official record
Conditions
Alpha-1 Antitrypsin Deficiency
Interventions
VX-864
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 80 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
10
States / cities
Gainesville, Florida • Orlando, Florida • Iowa City, Iowa + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2025 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 2 Interventional Results available

Safety, Tolerability and Pharmacodynamic Effect of Fazirsiran (TAK-999, ARO-AAT)

NCT03945292
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency
Interventions
Fazisiran Injection, Placebo
Drug · Other
Lead sponsor
Arrowhead Pharmaceuticals
Industry
Eligibility
18 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
16
States / cities
Birmingham, Alabama • Phoenix, Arizona • La Jolla, California + 13 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2025 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 4 Interventional Results available

Zemaira in Subjects With Emphysema Due to Alpha1-Proteinase Inhibitor Deficiency

NCT00261833
View directory record Official record
Conditions
Alpha1-proteinase Inhibitor Deficiency, Emphysema
Interventions
Alpha1-proteinase inhibitor, Placebo
Biological · Other
Lead sponsor
CSL Behring
Industry
Eligibility
18 Years to 65 Years
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
4
States / cities
Denver, Colorado • Miami, Florida • Hershey, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2015 · Synced Sep 21, 2026, 3:56 PM EDT
Recruiting Phase 3 Interventional

Study to Learn About the Safety of Fazirsiran and if it Can Help People With Alpha-1 Antitrypsin Liver Disease With Mild Liver Scarring (Fibrosis)

NCT06165341
View directory record Official record
Conditions
Alpha1-Antitrypsin Deficiency
Interventions
Fazirsiran Injection, Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
20
States / cities
Phoenix, Arizona • Tucson, Arizona • La Jolla, California + 15 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Sep 21, 2026, 3:56 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Characterization of the Pathobiology of Early Lung Destruction in Alpha 1-Antitrypsin Deficient Individuals

NCT00001462
View directory record Official record
Conditions
Emphysema, Lung Diseases, Obstructive, Alpha 1-Antitrypsin Deficiency
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1995 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 21, 2026, 3:56 PM EDT
Terminated Not applicable Interventional

Environment Effect on Six-Minute Walk Test Performance

NCT02502201
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Alpha-1 Antitrypsin Deficiency
Interventions
six-minute walk study indoors, six-minute walk study outdoors
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 3 Interventional Results available

GLASSIA Safety, Immunogenicity, and Bronchoalveolar Lavage Study

NCT02525861
View directory record Official record
Conditions
Alpha1-antitrypsin Deficiency
Interventions
GLASSIA
Biological
Lead sponsor
Baxalta now part of Shire
Industry
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
17
States / cities
Tucson, Arizona • Los Angeles, California • Sacramento, California + 13 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Sep 21, 2026, 3:56 PM EDT
Completed No phase listed Observational

Prevalence of Alpha-1 Antitrypsin Deficiency in Chronic Obstructive Pulmonary Disease (COPD)

NCT01419158
View directory record Official record
Conditions
Alpha-1 Antitrypsin Deficiency, Chronic Obstructive Pulmonary Disease
Interventions
Not listed
Lead sponsor
Alpha-1 Foundation
Other
Eligibility
18 Years and older
Enrollment
3,457 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
18
States / cities
Los Angeles, California • Denver, Colorado • Gainesville, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2012 · Synced Sep 21, 2026, 3:56 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Identification of Genes Associated With Lung Disease in Patients With Rheumatoid Arthritis

NCT00001885
View directory record Official record
Conditions
Healthy, Pulmonary Fibrosis, Rheumatoid Arthritis
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
21 Years and older
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 2 Interventional

4-PBA: Will it Increase the Level of Alpha 1-Antitrypsin(AAT) in Persons With AAT Deficiency?

NCT00067756
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency
Interventions
4-PBA
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 2, 2014 · Synced Sep 21, 2026, 3:56 PM EDT
Recruiting Phase 4 Interventional

Genetic Variation in IgG in Alpha 1 Antitrypsin Deficiency

NCT07135427
View directory record Official record
Conditions
Alpha 1-Antitrypsin, COPD, Antibody Deficiency
Interventions
20-valent pneumococcal conjugate vaccine
Biological
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 21, 2026, 3:56 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The Alpha-1 Foundation's and University of Florida's Alpha-1 Coded Testing (ACT) Study

NCT00500123
View directory record Official record
Conditions
Alpha-1 Antitrypsin Deficiency
Interventions
Alpha-1 Antitrypsin Genotype
Procedure
Lead sponsor
University of Florida
Other
Eligibility
Not listed
Enrollment
50,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2050
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 3 Interventional Results available

The Safety and Tolerability of Alpha-1 Modified Process (MP) In Subjects With Alpha-1-antitrypsin (AAT) Deficiency

NCT00301366
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency
Interventions
alpha-1 proteinase inhibitor (human)
Drug
Lead sponsor
Grifols Therapeutics LLC
Industry
Eligibility
18 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
8
States / cities
Denver, Colorado • Gainesville, Florida • Miami, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2014 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 2 Interventional Results available

Alvelestat (MPH966) for the Treatment of ALpha-1 ANTitrypsin Deficiency

NCT03679598
View directory record Official record
Conditions
Alpha-1 Antitrypsin Deficiency (AATD), Pi*ZZ, Pi*SZ, Pi*Null, Another Rare Phenotype/Genotype Known to be Associated With Either Low or Functionally Impaired AAT Including F or I Mutations, Emphysema or COPD
Interventions
Alvelestat (MPH966), Placebo
Drug · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 80 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
10
States / cities
Birmingham, Alabama • Los Angeles, California • Denver, Colorado + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2024 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase 1, First-in-human Study of VX-668

NCT05727800
View directory record Official record
Conditions
Alpha-1 Antitrypsin Deficiency
Interventions
VX-668, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 55 Years
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
5
States / cities
Tempe, Arizona • Gainesville, Florida • Orlando, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 14, 2024 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Alpha-1 Antitrypsin (AAT) Enhances Islet Autograft Survival in Patients With Chronic Pancreatitis

NCT02947087
View directory record Official record
Conditions
Chronic Pancreatitis
Interventions
Prolastin-C, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 28, 2023 · Synced Sep 21, 2026, 3:56 PM EDT
Enrolling by invitation Phase 3 Interventional

Long Term Safety of Alpha1-Proteinase Inhibitor in Subjects With Alpha1 Antitrypsin Deficiency

NCT02796937
View directory record Official record
Conditions
Pulmonary Emphysema in Alpha-1 Antitrypsin Deficiency
Interventions
Alpha-1 MP
Biological
Lead sponsor
Grifols Therapeutics LLC
Industry
Eligibility
20 Years to 72 Years
Enrollment
290 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2029
U.S. locations
6
States / cities
Phoenix, Arizona • Miami, Florida • Wilmington, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Sep 21, 2026, 3:56 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase 1, First-in-human Study of VX-634

NCT05579431
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency
Interventions
VX-634, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 55 Years
Enrollment
127 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
5
States / cities
Tempe, Arizona • Gainesville, Florida • Orlando, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 11, 2024 · Synced Sep 21, 2026, 3:56 PM EDT