It is noteworthy that one out of the significantly abundant clusters was distinguished by higher expression of CX3CR1. In another study, Zhang et al. [161] showed that CX3CR1 transcript level was increased in the anterior cingulate cortex of suicide completers with schizophrenia when compared to the subjects affected by this condition who died of other causes. This evidence concerns the gene CX3CR1 and schizophrenia.