ZDHHC19 and schizophrenia: Using eQTL data in MR analysis (primarily the inverse variance weighted [IVW] method), we detected significant associations between the expression of four palmitoylation genes—PPT2, ZDHHC19, ZDHHC20, and ZDHHC24—and schizophrenia susceptibility (p < 0.05), as shown in Figure 3 (see Supplementary Table S3 for details).