Finally, combining a WES analysis of fourteen complete parent–offspring trios with sporadic schizophrenia, which yielded one case with a disruptive PTPRG mutation, and the identification of five additional mutant alleles via targeted sequencing in an independent cohort of 48 patients also linked PTPRG to schizophrenia (Kranz et al., 2015; Kranz et al., 2016; Cressant et al., 2017). Here, PTPRG is linked to schizophrenia.