AIF1 and schizophrenia: Overall, we found support for lower-than-normal levels of microglial transcripts in the prefrontal cortex of patients with schizophrenia (no increase in IBA1 or Hexb mRNA, reduced CD11c mRNA), in line with putative microglial quiescence and aligning with previous reports of comparable numbers of cortical microglia in people with schizophrenia compared to controls (Bergon et al., 2015; Gandal et al., 2018a,b; Snijders et al., 2021).