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Showing 1–14 of 14 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Alpha-1 15% Clear all
Completed Phase 2 Interventional Results available

Study of the Medication Prazosin for Alcohol Dependence

NCT00762710
View directory record Official record
Conditions
Alcoholism
Interventions
Prazosin medication, Placebo medication
Drug
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 3, 2020 · Synced Sep 4, 2026, 9:53 PM 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 4, 2026, 9:53 PM EDT
Terminated Phase 4 Interventional Results available

Prazosin and Cerebrospinal Fluid (CSF) Biomarkers in Mild Traumatic Brain Injury (mTBI)

NCT03221751
View directory record Official record
Conditions
Dementia
Interventions
prazosin hydrochloride, placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
21 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 25, 2024 · Synced Sep 4, 2026, 9:53 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

The Safety and Efficacy of Phentolamine Mesylate Ophthalmic Solution in Subjects With Severe Night Vision Disturbances

NCT01703559
View directory record Official record
Conditions
Night Vision Complaints, Decrease in Night Vision, Disturbance; Vision, Loss
Interventions
Phentolamine Mesylate Ophthalmic Solution 1.0%, Phentolamine Mesylate Ophthalmic Solution 0.5%, Phentolamine Mesylate Ophthalmic Solution Vehicle (Placebo)
Drug · Other
Lead sponsor
Ocuphire Pharma, Inc.
Industry
Eligibility
18 Years to 45 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 31, 2019 · Synced Sep 4, 2026, 9:53 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

GLASSIA Infusion Rate Study

NCT01651351
View directory record Official record
Conditions
Alpha1-antitrypsin Deficiency, Healthy Volunteers
Interventions
Alpha1-proteinase inhibitor, Placebo: Human albumin 2.5%
Biological
Lead sponsor
Baxalta now part of Shire
Industry
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated May 24, 2021 · Synced Sep 4, 2026, 9:53 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Pharmacogenetic Trial of Doxazosin for Treatment of Cocaine Abuse

NCT01953432
View directory record Official record
Conditions
Cocaine Dependence
Interventions
Doxazosin, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 64 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 19, 2020 · Synced Sep 4, 2026, 9:53 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 4, 2026, 9:53 PM EDT
Withdrawn Early Phase 1 Interventional Accepts healthy volunteers

Role of Acetylcholine in Blood Flow Regulation in Healthy Adults: Effects of Age and Exercise Training

NCT03972683
View directory record Official record
Conditions
Vasoconstriction, Vasodilation
Interventions
Handgrip Exercise Training, Acetylcholine, Adenosine Triphosphate, Atropine, Phenylephrine, Sodium Nitroprusside
Other · Drug
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 1, 2021 · Synced Sep 4, 2026, 9:53 PM EDT
Completed Phase 2 Interventional Results available

Pharmacogenetics of Doxazosin for Cocaine Dependence

NCT01145183
View directory record Official record
Conditions
Cocaine Dependence
Interventions
Doxazosin, Placebo
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 64 Years
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 21, 2019 · Synced Sep 4, 2026, 9:53 PM EDT
Terminated Phase 2 Interventional Results available

Carbamazepine in Severe Liver Disease Due to Alpha-1 Antitrypsin Deficiency

NCT01379469
View directory record Official record
Conditions
Alpha-1-antitrypsin Deficiency, Liver Cirrhosis
Interventions
Drug-Carbamazepine (Tegretol XR), Carbamazepine (Tegretol XR) Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
14 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
3
States / cities
St Louis, Missouri • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 11, 2021 · Synced Sep 4, 2026, 9:53 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Prazosin and Naltrexone (PaN) Study for Veterans With Alcohol Use Disorders

NCT02322047
View directory record Official record
Conditions
Alcohol Use Disorder, Posttraumatic Stress Disorder (PTSD)
Interventions
Prazosin, Naltrexone, Placebo (Prazosin), Placebo (Naltrexone)
Drug
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years to 80 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 28, 2020 · Synced Sep 4, 2026, 9:53 PM 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 4, 2026, 9:53 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Alpha 1 Anti-Trypsin (AAT) in Treating Patients With Acute Graft-Versus-Host Disease GVHD)

NCT01523821
View directory record Official record
Conditions
Graft-Versus-Host Disease (GVHD) Acute on Chronic
Interventions
Alpha 1-Proteinase Inhibitor, Human 1 MG [Glassia]
Drug
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 29, 2018 · Synced Sep 4, 2026, 9:53 PM EDT
Completed Phase 2 Interventional Results available

A Study of the Efficacy and Safety of Ocrelizumab in Patients With Relapsing-Remitting Multiple Sclerosis

NCT00676715
View directory record Official record
Conditions
Multiple Sclerosis, Relapsing-Remitting
Interventions
Placebo, Ocrelizumab, Avonex
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2023
U.S. locations
26
States / cities
Phoenix, Arizona • Berkeley, California • San Francisco, California + 22 more
Source: ClinicalTrials.gov public record
Updated Dec 30, 2024 · Synced Sep 4, 2026, 9:53 PM EDT