03/19/2026
New Netherton Study-including international locations
A clinical research study for adults and adolescents living with Netherton syndrome.
Netherton syndrome is a rare, inherited condition characterized by severe skin problems, abnormal hair growth, and an increased risk of developing allergies and asthma. Currently, there are no approved treatments for Netherton syndrome.
The clinical research study (BCX17725-101) is looking at whether an investigational medicine called BCX17725 might be a potential treatment for people with Netherton syndrome. “Investigational” means that the FDA and other health authorities have not approved the medicine to be given to patients, except in clinical studies.
What is BCX17725?
BCX17725 is not a cure but aims to improve the symptoms of Netherton syndrome.
About the BCX17725-101 Study
BioCryst Pharmaceuticals is sponsoring this study.
The study is designed to determine how safe BCX17725 is, if it works, and how the body handles taking it.
If you or someone you are caring for want to participate in this study, you/they must:
· Be 12 to 65 years of age
· Have a diagnosis of Netherton syndrome
· If female, not be pregnant or nursing a child
· Be willing to stop some other medications before and during the study
· Available to complete the entire study and willing to comply with the study tests and procedures
The study is currently enrolling participants in the USA, the Netherlands, Germany, France, and Australia.
What will happen during the BCX17725-101 study
The study will last about 5 to 6 months in total. All eligible participants will receive BCX17725 for 12 weeks, followed by an 8-week off-treatment observation period. The drug may be given as an intravenous infusion (directly into a vein) and/or by subcutaneous injection (under the skin). Approximately 12 adults and teenagers with Netherton syndrome are expected to take part in the study.
Participating in research is voluntary. You are under no obligation to participate, and you may choose to withdraw at any time without affecting your current or future medical care. The study team will explain the possible risks and benefits of the study. Reasonable travel costs will be covered or reimbursed.
How do I get more information?
If you think you may be interested in participating in the study, please contact a participating study center to learn more about this clinical study. Contact information for participating study centers can be found at https://clinicaltrials.gov/study/NCT06539507 (refer to study part 4).