Gene Therapy for Wilson Disease Evaluated by 64Cu PET/CT

Inclusion Criteria: * Patients with Wilson disease who have received gene therapy (UX701) as part of NCT04884815 * Age above 18 years * Women of childbearing potential must accept to use safe contraception at the time of the PET scans: Spiral or hormonal contraception (oral pills, implants, transdermal patches, vaginal rings, or depot injections) * At the day of the first PET scan, a negative urine pregnancy test is required for women of childbearing potential * Before the first PET scan, a signed informed consent must be completed Exclusion Criteria: * Known hypersensitivity to Cu-64, copper in general, or other components of the radiotracer formulation * Claustrophobia * Pregnancy, breastfeeding, or plans to become pregnant