SYNJ2 and cancer: Previous research showed differential expression levels of SYNJ2 between some cancers (e.g., BRCA [14] and LIHC [32]) and their control samples, and our study further comprehensively analyzed 20 cancers and revealed that increased and decreased SYNJ2 expression levels were defined in seven cancers (CHOL, COAD, LIHC, LUAD, LUSC, PRAD, and STAD) and four cancers (GBM, KICH, KIRC, and KIRP), respectively.