Here we report the clinical and molecular characterisation of a maternally inherited BP1-BP2 deletion in two siblings with intellectual, motor and speech delay, autistic syndrome disorder and several dysmorphic features.     ///    Our results suggest that BP1-BP2 deletion could be considered as a risk factor for neuropsychological phenotypes and that it presents with variable clinical expressivity..     ///    "15q11.2 deletion, implicating common PWS/AS breakpoints BP1-BP2, has been described in patients with delayed motor and speech development and behavioural problems. "