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Showing 25–41 of 17 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Porphyria Clear all
Recruiting No phase listed Observational

ELEVATE, a Registry of Patients With Acute Hepatic Porphyria (AHP)

NCT04883905
View directory record Official record
Conditions
Acute Hepatic Porphyria
Interventions
Not listed
Lead sponsor
Alnylam Pharmaceuticals
Industry
Eligibility
12 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
13
States / cities
Birmingham, Alabama • Gilbert, Arizona • San Francisco, California + 10 more
Source: ClinicalTrials.gov public record
Updated Apr 26, 2026 · Synced Jul 22, 2026, 5:19 PM EDT
Available No phase listed Expanded access

Expanded Access Program of Bitopertin For Participants With EPP or XLP

NCT07603401
View directory record Official record
Conditions
Erythropoietic Protoporphyria (EPP), X-Linked Protoporphyria (XLP)
Interventions
DISC-1459
Drug
Lead sponsor
Disc Medicine, Inc
Industry
Eligibility
12 Years and older
U.S. locations
4
States / cities
Miami, Florida • Boston, Massachusetts • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Jul 22, 2026, 5:19 PM EDT
Recruiting Phase 1Phase 2 Interventional

A Study to Investigate the Improvement of Photosensitivity in Terms of Skin Lesions Associated With CEP Following Administration of Oral ATL-001 (Ciclopirox Oral Solution) in Participants Aged >18 Years of Age With CEP

NCT07024316
View directory record Official record
Conditions
Congenital Erythropoietic Porphyria (CEP)
Interventions
ATL-001 (Ciclopirox oral solution)
Drug
Lead sponsor
Atlas Molecular Pharma
Industry
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Jul 22, 2026, 5:19 PM EDT
Not listed No phase listed Observational

Studies in Porphyria I: Characterization of Enzyme Defects

NCT00004331
View directory record Official record
Conditions
Porphyria
Interventions
Not listed
Lead sponsor
National Center for Research Resources (NCRR)
NIH
Eligibility
0 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1992
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 22, 2026, 5:19 PM EDT
Recruiting No phase listed Observational

Longitudinal Study of the Porphyrias

NCT01561157
View directory record Official record
Conditions
Acute Porphyrias, Cutaneous Porphyrias
Interventions
Not listed
Lead sponsor
The American Porphyrias Expert Collaborative
Other
Eligibility
1 Minute and older
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2030
U.S. locations
16
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 13 more
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Jul 22, 2026, 5:19 PM EDT
Completed Phase 2 Interventional Results available

Harvoni Treatment Porphyria Cutanea Tarda

NCT03118674
View directory record Official record
Conditions
Porphyria Cutanea Tarda, Hepatitis C
Interventions
Harvoni
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
3
States / cities
San Francisco, California • Winston-Salem, North Carolina • Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 2, 2023 · Synced Jul 22, 2026, 5:19 PM EDT
Completed Phase 2 Interventional Results available

Study to Evaluate Efficacy, Safety, and Tolerability of MT-7117 in Subjects With Erythropoietic Protoporphyria

NCT03520036
View directory record Official record
Conditions
Erythropoietic Protoporphyria (EPP)
Interventions
MT-7117 low dose, MT-7117 high dose, Placebo
Drug
Lead sponsor
Tanabe Pharma America, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
9
States / cities
Los Angeles, California • San Francisco, California • Miami, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 30, 2025 · Synced Jul 22, 2026, 5:19 PM EDT
Terminated Not applicable Interventional

The Effect of Low Intensity Exercise on Quality of Life and Hemodynamics in Patients With Permanent Atrial Fibrillation

NCT00680290
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Exercise
Procedure
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 15, 2019 · Synced Jul 22, 2026, 5:19 PM EDT
Completed No phase listed Observational

Diagnostic and Screening Study of Genetic Disorders

NCT00006057
View directory record Official record
Conditions
Tay-Sachs Disease, Porphyria, Erythropoietic, Leukodystrophy, Globoid Cell, Metabolism, Inborn Errors
Interventions
Not listed
Lead sponsor
National Center for Research Resources (NCRR)
NIH
Eligibility
0 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 22, 2026, 5:19 PM EDT
Completed No phase listed Observational

Mitoferrin-1 Expression in Erythropoietic Protoporphyria (Porphyria Rare Disease Clinical Research Consortium (RDCRC))

NCT01880983
View directory record Official record
Conditions
Erythropoietic Protoporphyria (EPP)
Interventions
Not listed
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
7 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2020
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 23, 2021 · Synced Jul 22, 2026, 5:19 PM EDT
Completed No phase listed Observational

Evidence-based Assessment of Medication Sensitivity in Acute Hepatic Porphyria

NCT03906214
View directory record Official record
Conditions
Porphyrias
Interventions
Web-based Survey
Other
Lead sponsor
University of South Florida
Other
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Oct 15, 2019 · Synced Jul 22, 2026, 5:19 PM EDT
Completed Phase 2 Interventional Results available

Hydroxychloroquine and Phlebotomy for Treating Porphyria Cutanea Tarda

NCT01573754
View directory record Official record
Conditions
Porphyria Cutanea Tarda
Interventions
Hydroxychloroquine, Phlebotomy
Drug · Procedure
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 100 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2021
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 16, 2023 · Synced Jul 22, 2026, 5:19 PM EDT
Enrolling by invitation Phase 2Phase 3 Interventional

HELIOS: Open-Label, Long-Term Extension Study to Investigate the Safety, Tolerability, and Efficacy of DISC-1459 (Bitopertin) in Participants With EPP or XLP

NCT05883748
View directory record Official record
Conditions
Erythropoietic Protoporphyria
Interventions
DISC-1459
Drug
Lead sponsor
Disc Medicine, Inc
Industry
Eligibility
12 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
11
States / cities
Birmingham, Alabama • San Francisco, California • Miami, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Jul 22, 2026, 5:19 PM EDT
Terminated No phase listed Observational

INSIGHT-AHP: A Study to Characterize the Prevalence of Acute Hepatic Porphyria (AHP) in Patients With Clinical Presentation and History Consistent With AHP

NCT03547297
View directory record Official record
Conditions
Acute Hepatic Porphyria, Hepatic Porphyrias, Acute Intermittent Porphyria (AIP), Hereditary Coproporphyria (HCP), Variegate Porphyria (VP), ALA Dehydratase Deficient Porphyria (ADP), Porphyria Acute
Interventions
Not listed
Lead sponsor
Alnylam Pharmaceuticals
Industry
Eligibility
16 Years and older
Enrollment
212 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
12
States / cities
Pasadena, California • Jacksonville, Florida • Margate, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Jan 24, 2019 · Synced Jul 22, 2026, 5:19 PM EDT
Completed No phase listed Observational

Study of the Pathogenesis of Porphyria Cutanea Tarda

NCT00005103
View directory record Official record
Conditions
Porphyria Cutanea Tarda
Interventions
Not listed
Lead sponsor
National Center for Research Resources (NCRR)
NIH
Eligibility
0 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2000
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 22, 2026, 5:19 PM EDT
Completed Phase 3 Interventional

INcreased Sun Exposure Without Pain In Research Participants With EPP or XLP

NCT06144840
View directory record Official record
Conditions
Erythropoietic Protoporphyria (EPP), X-Linked Protoporphyria (XLP)
Interventions
Dersimelagon, Placebo
Drug
Lead sponsor
Tanabe Pharma America, Inc.
Industry
Eligibility
12 Years to 75 Years
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
13
States / cities
Huntington Beach, California • San Francisco, California • Miami, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Jul 22, 2026, 5:19 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Study to Evaluate Long-term Safety and Clinical Activity of Givosiran (ALN-AS1) in Patient With Acute Intermittent Porphyria (AIP)

NCT02949830
View directory record Official record
Conditions
Acute Intermittent Porphyria
Interventions
Givosiran
Drug
Lead sponsor
Alnylam Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
3
States / cities
San Francisco, California • New York, New York • Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 11, 2024 · Synced Jul 22, 2026, 5:19 PM EDT