Angelman syndrome is a neuro-developmental disorder caused by genetic abnormalities affecting the maternal gene expression in the chromosome region 15q11-q13.
[ncbi.nlm.nih.gov]
Abstract Angelman Syndrome is a rare neurodevelopmental disorder associated with significant developmental and communication delays, high risk for epilepsy, motor dysfunction
[ncbi.nlm.nih.gov]
The main features consist of psychomotor retardation, developmental speech disorder, ataxia, tremor, hyperactivity, clapping hands, inadequate laughter and happiness, attention
[osti.gov]