Table 3.

Correlations between CSF biomarkers.

	YKL-40	MCP-1	CRP	SAA	IL-6	IL-8	α-syn	Tau	P-tau	Aβ42
MCP-1	NS
CRP	0.143*	NS
SAA	0.153*	NS	0.669***
IL-6	NS	NS	NS	0.139*
IL-8	0.253***	0.158*	0.182**	0.218***	0.285***
α-syn	0.363***	NS	NS	0.160*	NS	0.209**
Tau	0.4135***	NS	NS	0.161*	− 0.188**	NS	0.736***
P-tau	0.359***	NS	NS	NS	NS	0.160 *	0.789***	0.731***
Aβ42	NS	NS	NS	NS	NS	NS	0.406***	NS	0.213***
NfL	0.376***	0.218***	0.149*	0.196**	NS	0.243***	0.137*	0.367***	NS	−0.157*

Correlations between different CSF biomarkers in the cohort as a whole, corrected for age, gender, disease duration, total somatic illness and inflammatory conditions, given as β-values.

For α-syn only samples with Hb <200 ng/L was included.

*significant for <0.05. **Significant for <0.01. ***Significant for <0.001.

NS = Not Significant.