CD26-Related Serum Biomarkers: sCD26 Protein, DPP4 Activity, and Anti-CD26 Isotype Levels in a Colorectal Cancer-Screening Context

Table 4

Correlation of DPP-IV, sCD26, IgA, IgG, and IgM in all the cohort.

	DPP4	sCD26	IgA	IgG	IgM
DPP4	1	0.138	0.038	-0.015	0.003
value		0.003	0.661	0.867	0.968
	484	480	134	135	135
	sCD26	1	-0.149	-0.117	-0.021
	value		0.084	0.174	0.803
		493	136	137	137
		IgA	1	0.441	0.268
		value		<0.0001	0.002
			136	136	136
			IgG	1	0.638
			value		<0.0001
				137	137
				IgM	1
				value
					137

: Pearson correlation coefficient.