To examine whether LAMP-1 is a target of α(1,2)-fucosytransferases, FUT1 and FUT2 were transiently overexpressed in breast cancer cell line T47D breast cancer cells in which the mRNA expression of FUT1 and FUT2 was about ~8401 and ~5490-fold of the control groups, respectively (Supplementary Figure S2a). This evidence concerns the gene FUT1 and breast cancer.