EGF, FGF2 and MMP2 exhibited significant under-expression in BC vs. normal tissue: EGF, 0.00004±0.000047 vs. 0.000151±0.000235 (p = 0.0017); FGF2, 0.0003±0.0004 vs. 0.0023±0.0019 (p<0.0001); MMP2, 0.0752±0.0858 vs. 0.1341±0.0834 (p = 0.0007; Mann-Whitney U test) (Figure S3C). The gene discussed is EGF; the disease is breast cancer.