Since deficits in PPI are not specific to schizophrenia or ASD, but also shown in multiple neuropsychiatric disorders including bipolar disorder (51), a certain form of attention deficit hyperactivity disorder (52) and obsessive-compulsive disorder (OCD) (53), it would be interesting to explore the possibility that FABP7 could be a common contributor to all these disorders. Here, FABP7 is linked to attention deficit-hyperactivity disorder.