3-year-old shows progress after receiving world's 1st gene therapy for Hunter syndrome
Three-year-old Oliver Chu is showing progress after receiving the world's first gene therapy for Hunter syndrome in Royal Manchester Children's Hospital in February 2025. Hunter syndrome is a rare genetic disorder that causes progressive damage to the body and brain. "I've been waiting 20 years to see a boy like Ollie doing as well as he is," a doctor said.