Recently, protein levels of important glycosylation enzymes, B3GNT8 and MGAT4A, were found decreased in the prefrontal cortex in schizophrenia (12 case–control pairs),33 whereas in our study B3GNT1, B3GNT3 and MGAT1 transcripts were downregulated in schizophrenia cases (Supplementary Table S1). Here, MGAT4A is linked to schizophrenia.