The goal of this clinical trial is to learn if bitopertin works and is safe to treat EPP or XLP in participants 12 years or older. The main questions it aims to answer are: * Whether bitopertin increases pain-free sunlight exposure after 6 months of treatment in participants with EPP or XLP. * How PPIX concentration levels change from before bitopertin treatment to after 6 months of treatment. Researchers will compare bitopertin to a placebo look-alike substance that contains no drug. Participants will complete daily questionnaires and attend study visits for assessments.
Phase 3 trials are pivotal studies with large patient populations (hundreds to thousands) designed to prove efficacy and safety for FDA submission. A successful Phase 3 readout is typically the last major hurdle before a New Drug Application (NDA) or BLA filing.
This trial has completed. Results may be available via ClinicalTrials.gov or peer-reviewed publications.
Disc Medicine (IRON) is the sponsoring company for this trial. BiotechSign currently grades this company D (47/100) based on composite catalyst signals across its full pipeline. This trial is one data point in that overall catalyst picture.