However, reports have shown shared cell death–related transcriptional expression between schizophrenia and bipolar disorder (75), including increased levels of TNFR1, TWEAKR, and FAS in serum (36,58,59,76, 77, 78), the frontal cortex (39,40,79), and the hippocampus (42). Here, TNFRSF12A is linked to schizophrenia.