INPP4A and autism: Furthermore, we discovered INPP4A, a gene linked to schizophrenia (Föcking et al., 2015), epilepsy (Wang et al., 2012), and intellectual disability (Banihashemi et al., 2020) as well as RIMS4, which is involved in synaptic plasticity and the development of autism (Leblond et al., 2019).