Among them, AP1AR-DT, AC018647.1, ATP2C2-AS1, and AL596244.1 have been reported to be consistently differentially expressed in the postmortem brain tissue of bipolar disorder in the PsychENCODE brain RNA-seq dataset (P < 0.05; Fig. 1D and Table 1) [25]. Here, ATP2C2 is linked to bipolar disorder.