Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 29, 2026, 7:30 AM EDT

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Showing 1–24 of 61 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Mitochondrial Diseases, Drug Resistant Epilepsy, Leigh Disease, Leigh Syndrome, Mitochondrial Encephalopathy (MELAS), Pontocerebellar Hypoplasia Type 6 (PCH6), Alpers Disease, Alpers Syndrome
Interventions
Vatiquinone, Placebo
Drug · Other
Lead sponsor
PTC Therapeutics
Industry
Eligibility
Up to 20 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
12
States / cities
San Diego, California • Stanford, California • New Haven, Connecticut + 7 more
Conditions
Duchenne Muscular Dystrophy, Becker Muscular Dystrophy
Interventions
Ataluren
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
5 Years and older · Male only
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
15
States / cities
Sacramento, California • Aurora, Colorado • Gulf Breeze, Florida + 12 more
Conditions
Duchenne Muscular Dystrophy
Interventions
Deflazacort
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
4 Years to 16 Years · Male only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
4
States / cities
Los Angeles, California • Chicago, Illinois • Rochester, New York + 1 more
Conditions
Amyotrophic Lateral Sclerosis
Interventions
EPI-589
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
21 Years to 70 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
3
States / cities
Los Angeles, California • San Francisco, California • Portland, Oregon
Conditions
Renal Impairment
Interventions
Deflazacort
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
18 Years to 80 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
2
States / cities
Miami, Florida • Orlando, Florida
Conditions
Muscular Dystrophy, Duchenne, Muscular Dystrophies, Muscular Disorders, Atrophic, Muscular Diseases, Musculoskeletal Disease, Neuromuscular Diseases, Nervous System Diseases, Genetic Diseases, X-Linked, Genetic Diseases, Inborn
Interventions
Ataluren, PLACEBO
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
5 Years and older · Male only
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
22
States / cities
Phoenix, Arizona • Los Angeles, California • Oakland, California + 19 more
Conditions
Muscular Atrophy, Spinal
Interventions
Not listed
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
Not listed
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
2
States / cities
Kalamazoo, Michigan • Salt Lake City, Utah
Conditions
Muscular Dystrophy, Duchenne, Muscular Dystrophies, Muscular Disorders, Atrophic, Muscular Diseases, Musculoskeletal Diseases, Neuromuscular Diseases, Nervous System Diseases, Genetic Diseases, X-Linked, Genetic Diseases, Inborn
Interventions
Ataluren, Placebo
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
7 Years to 16 Years · Male only
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
21
States / cities
Los Angeles, California • Sacramento, California • Aurora, Colorado + 17 more
Conditions
Duchenne Muscular Dystrophy
Interventions
Ataluren
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
Male only
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2026
U.S. locations
29
States / cities
Phoenix, Arizona • Los Angeles, California • Palo Alto, California + 25 more
Terminated Phase 2 Interventional Results available

Study of Ataluren (PTC124) in Hemophilia A and B

NCT00947193
Conditions
Hemophilia A, Hemophilia B
Interventions
Ataluren
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
18 Years and older · Male only
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
7
States / cities
Peoria, Illinois • Indianapolis, Indiana • Worcester, Massachusetts + 4 more
Conditions
Phenylketonuria
Interventions
PTC923
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
Not listed
Enrollment
247 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
7
States / cities
Aurora, Colorado • Gainesville, Florida • Indianapolis, Indiana + 4 more
Conditions
Cystic Fibrosis
Interventions
Ataluren
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
6 Years and older
Enrollment
191 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
15
States / cities
Birmingham, Alabama • Long Beach, California • Palo Alto, California + 12 more
Completed Phase 3 Interventional Results available

A Study of PTC923 in Participants With Phenylketonuria

NCT05099640
Conditions
Phenylketonuria
Interventions
PTC923, Placebo
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
Not listed
Enrollment
157 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
12
States / cities
Stanford, California • Aurora, Colorado • Gainesville, Florida + 9 more
Conditions
Healthy Volunteers
Interventions
Deflazacort
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
San Antonio, Texas
Conditions
Phenylketonuria
Interventions
Sepiapterin
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
Up to 9 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
1
States / cities
Indianapolis, Indiana
Conditions
Leiomyosarcoma
Interventions
Unesbulin, Dacarbazine, Placebo
Drug · Other
Lead sponsor
PTC Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
359 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
23
States / cities
Duarte, California • Los Angeles, California • Santa Monica, California + 18 more
Conditions
High Grade Glioma, Diffuse Intrinsic Pontine Glioma
Interventions
PTC596, Radiotherapy
Drug · Radiation
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
12 Months to 21 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2029
U.S. locations
10
States / cities
Aurora, Colorado • Washington D.C., District of Columbia • Chicago, Illinois + 7 more
Conditions
Duchenne Muscular Dystrophy
Interventions
Ataluren
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
Male only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
3
States / cities
Cincinnati, Ohio • Philadelphia, Pennsylvania • Salt Lake City, Utah
Completed Phase 2 Interventional

PTC124 for Cystic Fibrosis

NCT00234663
Conditions
Cystic Fibrosis
Interventions
PTC124
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
5
States / cities
Birmingham, Alabama • Palo Alto, California • Denver, Colorado + 2 more
Conditions
Healthy Volunteers
Interventions
Deflazacort and rifampin, Deflazacort and Clarithromycin
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
18 Years to 80 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Tempe, Arizona
Terminated Phase 3 Interventional Results available

Study of Ataluren (PTC124) in Cystic Fibrosis

NCT02107859
Conditions
Cystic Fibrosis
Interventions
Ataluren
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
6 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
7
States / cities
Birmingham, Alabama • Long Beach, California • Aurora, Colorado + 4 more
Conditions
Limb-Girdle Muscular Dystrophy
Interventions
Deflazacort
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
8
States / cities
Atlanta, Georgia • Iowa City, Iowa • Kansas City, Kansas + 5 more
Conditions
Friedreich Ataxia
Interventions
Vatiquinone
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
Not listed
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
5
States / cities
Los Angeles, California • Gainesville, Florida • Tampa, Florida + 2 more
Conditions
Duchenne Muscular Dystrophy, Becker Muscular Dystrophy
Interventions
Ataluren, Chronic Corticosteroid Therapy
Drug
Lead sponsor
PTC Therapeutics
Industry
Eligibility
7 Years and older · Male only
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
5
States / cities
Davis, California • Boston, Massachusetts • Minneapolis, Minnesota + 2 more