NCT06539507 · BioCryst Pharmaceuticals
A Study of the Safety, Tolerability, Pharmacokinetics, and Immunogenicity of BCX17725
What this study is about
This is a first-in-human, Phase 1/1b, 4-part study that includes the evaluation of safety, tolerability, how the drug moves through the body (PK), and immunogenicity of BCX17725 when administered via single and multiple doses in healthy adult participants (Parts 1 and 2), and multiple doses in adult participants with Netherton syndrome (Part 3).
View original scientific description
This is a first-in-human, Phase 1/1b, 4-part study that includes the evaluation of safety, tolerability, pharmacokinetics (PK), and immunogenicity of BCX17725 when administered via single and multiple doses in healthy adult participants (Parts 1 and 2), and multiple doses in adult participants with Netherton syndrome (Part 3). In Part 4, the effectiveness, safety, and tolerability of BCX17725 when administered via multiple IV and/or SC doses through 12 weeks will be evaluated in adult and adolescent participants with Netherton syndrome.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Male or non-pregnant, non-lactating female aged 18 to 55 years, inclusive (Parts 1 and 2), 18 to 65 years, inclusive (Part 3), or 12 to 65 years, inclusive (Part 4)
- Confirmed diagnosis of Netherton syndrome (Parts 3 and 4)
- IGA score of ≥ 3 (Parts 3 and 4) and IASI score of ≥ 16 (Part 4)
- BMI between 18 and 30 kg/m\^2, inclusive (Parts 1 and 2)
- Estimated glomerular filtration rate (eGFR) of ≥ 90 mL/min/1.73 m\^2 (Parts 1 and 2) or ≥ 60 mL/min/1.73 m\^2 (Part 3)
- Agree to follow the protocol contraception requirements from screening until 90 days after the last dose of study drug
- In the opinion of the investigator, expected to adequately comply with all required study procedures and restrictions for the duration of the study
Where
- Palo Alto, California
- San Diego, California
- New Haven, Connecticut
- Chicago, Illinois
- Indianapolis, Indiana
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 16, 2026 · Source of record for eligibility and locations