Table 2. Optimum diagnostic FNDC5/Irisin and CEA cutoff point, AUC according to the receiver operator characteristic (ROC) curve.

Parameters	AUC	95% CI	Cutoff Point	p
FNDC5/Irisin (pg/mL)	0.768	0.658-0.856	>105.2	0.0001
CEA (ng/mL)	0.666	0.558-0.763	>2.67	0.005