Cerebrospinal Fluid Biomarkers in Spinocerebellar Ataxia: A Pilot Study

Table 3

Expanded CAG repeat length, Spearman correlation coefficient, and values.

Spearman correlation coefficient ( value):
Expanded CAG repeat length and biomarker concentration by disease state
	Tau	-Synuclein	DJ-1	GFAP
SCA1	−0.700 (0.188)	0.100 (0.873)	−0.100 (0.873)	0.500 (0.391)
SCA2	0.304 (0.558)	0.439 (0.383)	0.304 (0.558)	−0.101 (0.848)
SCA6	−0.410 (0.493)	−0.718 (0.172)	−0.154 (0.805)	0.103 (0.870)

Spearman correlations were performed to elucidate any relationship between expanded CAG repeat length and biomarker concentrations within each disease state. Data are expressed as correlation coefficient ( value).