Prime Medicine, Inc.
The purpose of this study is to evaluate the safety, tolerability, biological activity, and initial efficacy of PM577a, an investigational Prime Editing therapy, in adults and adolescents with Wilson disease (WD). Wilson disease is caused by changes (mutations) in the ATP7B gene that prevent the body from removing excess copper normally. PM577a is designed to precisely correct one of the most common disease-causing ATP7B mutations (p.H1069Q) in liver cells with the goal of restoring normal copper metabolism. This is the first study of PM577a in people. Participants will receive a single intravenous (IV) infusion of PM577a and will be monitored closely to evaluate safety, how the body responds to treatment, whether copper metabolism improves, and whether treatment may improve signs and symptoms of Wilson disease.
This is a Phase 1/2, open-label study evaluating PM577a in adults and adolescents with Wilson disease who have specific disease-causing changes in the ATP7B gene, including at least one p.H1069Q mutation. The study will evaluate the safety of PM577a, determine an appropriate dose for future studies, and assess whether treatment restores copper metabolism and improves clinical measures of Wilson disease. Participants will receive a single IV infusion of PM577a and will undergo regular safety evaluations, laboratory testing, imaging, and clinical assessments for approximately 48 weeks after tre…
Inclusion Criteria: * Confirmed Wilson Disease (WD) diagnosis as determined by medical history consistent with WD * Historical genetic analysis demonstrating biallelic pathogenic, likely pathogenic, or suspected pathogenic ATP7B variants, including at least one p.H1069Q allele. * Treated and stable on standard of care therapy for WD for the past 6 months prior to signing ICF, as documented by a history of adherence to SOC medications (i.e., penicillamine, trientine, and/or zinc) without significant medication or dose/frequency changes, per Investigator judgement. * Demonstrated Adequate Coppe…
PM577a is being evaluated in participants with Wilson disease caused by biallelic pathogenic, likely pathogenic, or suspected pathogenic ATP7B variants, including at least one p.H1069Q allele.