DAG1 and Intellectual disability: Moreover, synapse-associated Dp71 interacts with β-dystrobrevin (βDb), dystroglycan and Inhibitory Synaptic Factor 1 (Insyn1); in contrast, glia-associated Dp71 exhibits interactions with α-dystrobrevin (αDb) and dystroglycan.75 Insyn1 is preferentially found with gephyrin at inhibitory post-synaptic densities and is a potential candidate gene for epilepsy and intellectual disability.114