TFRC and cancer: Accumulating evidence has proven that overexpression of TFR‐1 and high iron concentration, are both widespread conditions of cancer cells, and both seem to be essential to tumour onset and progression (Daniels, Delgado, Helguera, et al., 2006; Daniels, Delgado, Rodriguez, et al., 2006; Shen et al., 2018), and can represent potential selective targets in cancer therapy (Daniels, Delgado, Helguera, et al., 2006; Daniels, Delgado, Rodriguez, et al., 2006; Shen et al., 2018).