Table 3.

Correlations between the four COL6 serum biomarkers.

Biomarkers	Spearman, r	P
C6Ma1 vs C6Ma3	0.739	<.0001
C6Ma3 vs PRO-C6	0.216	.058
C6Ma1 vs IC-6	0.207	.088
C6Ma3 vs IC-6	0.163	.179
IC-6 vs PRO-C6	0.123	.313
C6Ma1 vs PRO-C6	0.042	.715