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Showing 1–24 of 83 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Alpha 1 Antitrypsin Deficiency Clear all
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 16, 2026, 10:46 AM EDT
Recruiting Phase 3 Interventional

A Non-inferiority Pharmacokinetic and Safety/Tolerability Study of Two Different Doses of Weekly SC Alpha1-PI 15% Compared With Corresponding Standard IV Alpha1-PI in Participants With Alpha1-Antitrypsin Deficiency (AATD)

NCT07555483
View directory record Official record
Conditions
Alpha 1 Antitrypsin Deficiency
Interventions
Alpha-1 15%, Liquid Alpha1-PI
Drug · Other
Lead sponsor
Grifols Therapeutics LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
10
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 16, 2026, 10:46 AM EDT
Completed No phase listed Observational

The Use of High Resolution Chest Computed Tomography in Alpha-1 Antitrypsin Deficiency

NCT00532805
View directory record Official record
Conditions
Alpha-1 Antitrypsin Deficiency
Interventions
Not listed
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
7
States / cities
Denver, Colorado • Gainesville, Florida • Boston, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 16, 2026, 10:46 AM EDT
Completed Phase 1 Interventional Results available

Experimental Gene Transfer Procedure to Treat Alpha 1-Antitrypsin (AAT) Deficiency

NCT00430768
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency
Interventions
rAAV1-CB-hAAT
Biological
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
2
States / cities
Gainesville, Florida • Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 14, 2016 · Synced Sep 16, 2026, 10:46 AM 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 16, 2026, 10:46 AM 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 16, 2026, 10:46 AM EDT
Terminated Phase 2 Interventional Results available

A Study of Belcesiran in Patients With AATLD

NCT04764448
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency
Interventions
Belcesiran, Placebo
Drug · Other
Lead sponsor
Dicerna Pharmaceuticals, Inc., a Novo Nordisk company
Industry
Eligibility
18 Years to 75 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
3
States / cities
La Jolla, California • Gainesville, Florida • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 16, 2026, 10:46 AM EDT
Recruiting Phase 3 Interventional

Study to Check the Safety of Fazirsiran and Learn if Fazirsiran Can Help People With Liver Disease and Scarring (Fibrosis) Due to an Abnormal Version of Alpha-1 Antitrypsin Protein

NCT05677971
View directory record Official record
Conditions
Alpha1-Antitrypsin Deficiency
Interventions
Fazirsiran Injection, Placebo
Drug · Other
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 75 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2031
U.S. locations
37
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 28 more
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 16, 2026, 10:46 AM EDT
Completed Phase 2 Interventional

Study of SAR447537 (INBRX-101) Compared to Plasma-derived A1PI Therapy in Adults With AATD Emphysema

NCT05856331
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency, Emphysema
Interventions
SAR447537, Zemaira
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years to 80 Years
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
39
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 18 more
Source: ClinicalTrials.gov public record
Updated Aug 10, 2025 · Synced Sep 16, 2026, 10:46 AM EDT
Recruiting Phase 1Phase 2 Interventional

A Study of TSRA-196 in Adults With PiZZ Alpha-1 Antitrypsin Deficiency (AATD)

NCT07227207
View directory record Official record
Conditions
Alpha-1 Antitrypsin Deficiency (AATD)
Interventions
TSRA-196
Drug
Lead sponsor
Tessera Therapeutics, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
4
States / cities
Boston, Massachusetts • Rochester, Minnesota • Charleston, South Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 16, 2026, 10:46 AM 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 16, 2026, 10:46 AM EDT
Withdrawn Phase 2 Interventional

A Research Trial of Aralast NP in New Onset Diabetes (RETAIN) - Part II

NCT01183455
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Aralast NP, Placebo
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
8 Years to 35 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
15
States / cities
La Jolla, California • Aurora, Colorado • New Haven, Connecticut + 10 more
Source: ClinicalTrials.gov public record
Updated Dec 30, 2014 · Synced Sep 16, 2026, 10:46 AM EDT
Completed Phase 2 Interventional Results available

Safety and Tolerability Trial of Inhaled Alpha1-Proteinase Inhibitor (Human), Hydrophobic Chromatography Process (Alpha-1 HC) in Subjects With Cystic Fibrosis

NCT01684410
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Alpha-1 HC 100 mg, Placebo, Alpha-1 HC 200 mg
Biological
Lead sponsor
Grifols Therapeutics LLC
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
6
States / cities
Birmingham, Alabama • Denver, Colorado • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 7, 2016 · Synced Sep 16, 2026, 10:46 AM 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 16, 2026, 10:46 AM EDT
Terminated Phase 1 Interventional Results available

A Research Trial of Aralast in New Onset Diabetes (RETAIN)

NCT01183468
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Aralast NP 45 mg dose, Aralast NP 90 mg dose, Aralast NP 180 mg dose
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
8 Years to 35 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
15
States / cities
San Diego, California • Aurora, Colorado • New Haven, Connecticut + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2018 · Synced Sep 16, 2026, 10:46 AM EDT
Terminated No phase listed Observational

Study of Genotype and Phenotype in Patients With Alpha 1-Antitrypsin Deficiency

NCT00005098
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency
Interventions
Not listed
Lead sponsor
National Center for Research Resources (NCRR)
NIH
Eligibility
0 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 16, 2026, 10:46 AM EDT
Terminated No phase listed Observational

COPD Exacerbation Blood and Urine Biomarkers Study

NCT03823443
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Acute Exacerbation Copd, Alpha-1 Anti-trypsin Deficiency
Interventions
Not listed
Lead sponsor
Columbia University
Other
Eligibility
35 Years to 80 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 3, 2024 · Synced Sep 16, 2026, 10:46 AM 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 16, 2026, 10:46 AM EDT
Recruiting Phase 1Phase 2 Interventional

A Study to Evaluate the Safety and Efficacy of BEAM-302 in Adult Patients With Alpha-1 Antitrypsin Deficiency (AATD)

NCT06389877
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency
Interventions
BEAM-302
Drug
Lead sponsor
Beam Therapeutics Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
106 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
3
States / cities
Birmingham, Alabama • Boston, Massachusetts • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Sep 16, 2026, 10:46 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Study of OsrhAAT or Placebo in Healthy Volunteers

NCT05315921
View directory record Official record
Conditions
Emphysema Secondary to Congenital AATD
Interventions
OsrhAAT 1 mg/kg IV, OsrhAAT 3 mg/kg IV, OsrhAAT 10 mg/kg IV, OsrhAAT 20 mg/kg IV, OsrhAAT 40 mg/kg IV, OsrhAAT 60 mg/kg IV
Drug
Lead sponsor
Healthgen Biotechnology Corp.
Industry
Eligibility
18 Years to 55 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated Dec 11, 2022 · Synced Sep 16, 2026, 10:46 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Lung Disease and Its Affect on the Work of White Blood Cells in the Lungs

NCT01851642
View directory record Official record
Conditions
Alpha-1 Antitrypsin Deficiency, AAT Deficiency, AATD, Cystic Fibrosis (CF)
Interventions
History and physical exam., Blood draw., Pulmonary function testing., Albuterol inhaler.
Procedure · Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2033
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Sep 16, 2026, 10:46 AM EDT
Recruiting No phase listed Observational

PiMZ Longitudinal Cohort (PiMZ Logic)

NCT06505603
View directory record Official record
Conditions
Alpha 1-Antitrypsin Deficiency, Emphysema or COPD
Interventions
Not listed
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
5
States / cities
Birmingham, Alabama • Los Angeles, California • Denver, Colorado + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Sep 16, 2026, 10:46 AM EDT
Recruiting No phase listed Observational

A Study in Adults to Learn About Inherited Alpha-1 Antitrypsin Deficiency (AATD) and AATD Related Liver Problems

NCT06512454
View directory record Official record
Conditions
Alpha1-Antitrypsin Deficiency
Interventions
No Intervention
Other
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
3
States / cities
Gainesville, Florida • Charleston, South Carolina • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Sep 16, 2026, 10:46 AM EDT
Completed Phase 2 Interventional Results available

Safety & Efficacy Study of rAAV1-CB-hAAT for Alpha-1 Antitrypsin Deficiency

NCT01054339
View directory record Official record
Conditions
Alpha-1 Antitrypsin Deficiency
Interventions
rAAV1-CB-hAAT
Drug
Lead sponsor
Beacon Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
3
States / cities
Denver, Colorado • Worcester, Massachusetts • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 27, 2019 · Synced Sep 16, 2026, 10:46 AM EDT