FMR1 and autism: We have recently completed a preliminary study of serine 499 phosphorylated FMRP protein levels in the cerebellar vermis in adults (n = 5 controls and 5 adults with autism) and children (n = 3 controls and 4 children with autism), and in the superior frontal cortex in adults (n = 6 controls and 10 adults with autism) and children (n = 6 controls and 8 children with autism).