Sponsor or institution
Clinical trials and research at PTC Therapeutics
As of November 12, 2026, Find a Trial lists 2 clinical trials run by PTC Therapeutics that are recruiting, at sites in 10 countries (most in United States (2), Australia (1), France (1)). By phase: Phase 3 (1), Phase 2 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 2Clinical trials
- 10Countries
All recruiting trials (2)
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PTC844 in people with active rheumatoid arthritis
This study tests whether PTC844 is safe and how it behaves in the body compared with placebo for people with active rheumatoid arthritis.
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Evaluating sepiapterin for children with phenylketonuria
This study is testing if sepiapterin can help children with phenylketonuria keep their brain function and development healthy over time.
Quick answers
How many clinical trials run by PTC Therapeutics are recruiting right now?
2, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 10 countries. The most sites are in United States (2 trials), Australia (1 trial), France (1 trial), Ireland (1 trial), Poland (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 3: 1, Phase 2: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.