Overview
- Investigations by Science and Retraction Watch show a 6‑year‑old patient died after receiving an experimental base‑editing infusion, with doctors identifying a severe immune reaction linked to the therapy.
- The treatment was given under a local investigator‑initiated pathway and in March 2025 the child received a spinal infusion of viral vectors designed to carry a base editor into brain cells.
- The team published related animal studies in Nature in early 2026 without mentioning the human case or reporting troubling monkey kidney and liver findings that external experts say are safety signals.
- The child’s parents contributed about US$860,000 to the individualized treatment, the ClinicalTrials.gov entry for the study has not been updated for more than a year, and the hospital received a small administrative fine while the responsible physician got verbal counselling.
- Experts are calling for full review of the submitted and published data and say the omissions could prompt journal correction or retraction and tighter regulatory enforcement that may change how cutting‑edge trials are approved and run.