Up‐regulated glycolysis is corroborated by the average GAPDH gene expression in breast cancer, which is over four times higher than in normal breast tissue.18 Song et al. even reported an increase in GAPDH gene expression of a factor of 5 to 21.19 Enhanced expression of GAPDH is associated with breast cancer cell proliferation and tumor aggressiveness.20 Here, GAPDH is linked to breast carcinoma.