GNG12 and schizophrenia: Regarding neuropsychological traits, the proportion of the effect of MSDP mediated through blood DNAm is substantial: 48.4% for cord blood DNAm at GFI1 gene on attention deficit and hyperactivity disorder symptoms [60], and around 30% for adult blood DNAm at the GNG12 gene on schizophrenia-related outcomes [26].