YTHDF1 and neoplasm: Furthermore, we find a positive correlation between CNVs and mRNA expression levels for many of the regulators in most tumor types, especially in BRCA, LUSC, OV, LUAD, HNSC, BLCA, COAD, LIHC, CESC, STAD, SKCM, ESCA, and LGG, and YTHDF1 in BRCA is the strongest among them (Figure 3A).