FN1 and colorectal carcinoma: We found significant difference neither in the presence (OR 1.40; 95% CI [0.77; 2.54]; I2 = 0% [0; 71%], p = 0.215) nor in the relative abundance (MD -0.01; 95% CI [-0.13; 0.11]; I2 = 25% [0; 69%], p = 0.851) of salivary Fn between CRC and controls (CRP and healthy individuals) (Figs. 4 and 5).