GLRX and colon adenocarcinoma: The concentration of Grx1 in the serum of patients with colon adenocarcinoma (M = 17.76 ng/mL; Me = 11.61 ng/mL) was significantly lower than in the serum of healthy volunteers (M = 45.43 ng/mL; Me = 47 ng/mL) (p < 0.001) (Figure 8F).