ZCCHC4 and breast cancer: Significant correlation (|R| > 0.3 and P < 0.05) was observed in WTAP, ZC3H13, ZCCHC4, FTO, ALKBH5, YTHDC2, IGF2BP2, and IGF2BP3, implying a possible role of DNA methylation in shaping their gene expression in breast cancer (Table S4).