These small-scale clinical trials generally undergo less oversight than the traditional approval pathway for a green light. Preparations included preclinical trials in mice and monkeys, which Qui told the family proved that clinical trials should go ahead, Science reported. In early 2025, the hospital’s ethics committee approved the clinical trial, before the final results of one of the preclinical studies on monkeys was released, Science reported. A clinical trial listing associated with the experimental treatment has not been updated since last year. “We were shocked to hear of the death of a child in the recent clinical trial and of the circumstances around that trial.”