GSR and colon adenocarcinoma: The concentration of GR in the serum of patients with colon adenocarcinoma (M = 47.53 ng/mL; Me = 51.49 ng/mL) was significantly lower than in the serum of healthy volunteers (M = 5.46 ng/mL; Me = 3.65 ng/mL) (p < 0.001) (Figure 7F).