FUT4 and breast cancer: Previous studies reported that FUT8 level in spontaneous hepatocarcinoma was downregulated by miR-26a, miR-34a, miR-455-3p and miR-122.26, 27 Whether miR-200b suppresses the proliferation and metastasis of breast cancer cells via targeting FUT4, thus decreasing α1,3-fucosylated glycan biosynthesis of the glycoproteins, remains unclear.