what organs are affected by angelman syndrome
Angelman syndrome is a genetic disorder that affects the nervous system and causes severe physical and intellectual disability. It's relatively rare, occurring in around 1 in 16,000 people.Typical characteristics of Angelman syndrome include: 1  delayed development (usually noticeable from 6-12 months of age).n most cases of Angelman syndrome (about 70%), the child's maternal copy of the UBE3A gene is missing, which means there's no active copy of the UBE3A gene in the child's brain.