FN1 and colorectal carcinoma: When the quantity of Fn DNA was compared among MSI-H, L/E and MSS CRC, the Fn DNA load in MSI-H was the highest (MSI-H > L/E, p = 0.028; MSI-H > MSS, p = 0.000085) and the Fn DNA load in L/E was higher than in MSS (L/E > MSS, p = 0.028) (Fig. 1a).