The expression level of EFNA4 was higher in 27 tumor tissues than in corresponding normal tissues, including GBM, LGG, UCEC, BRCA, CESC, LUAD, ESCA, STES, KIRP, COAD, PRAD, STAD, HNSC, LUSC, LIHC, WT, BLCA, THCA, READ, OV, PAAD, TGCT, UCS, ALL, LAML, ACC, and CHOL (Supplementary Figure S1D). Here, BCR is linked to neoplasm.