We observed that the expression of 8 genes (Slc1a2, Larp1b, Lef1, Edn2, Slc6a12, Fgf21, C1qtnf5 and Flt3l) is appreciably elevated in invasive BC compared to normal breast samples using the Cancer Genome Atlas (TCGA) dataset (Fig. 7b). Here, FGF21 is linked to breast cancer.