Subsequent analysis revealed several positive correlations between ERVWE1 and HTR1B (p = 0.01, r = 0.65, Additional file 1: Fig. S2J), Arc (p = 0.03, r = 0.57, Additional file 1: Fig. S2K), and ALKBH5 (p < 0.01, r = 0.78, Additional file 1: Fig. S2L) in the mRNA levels of schizophrenia patients, as determined by Spearman's correlation. Here, ARC is linked to schizophrenia.