Table 2.

Serum progranulin levels in dermatomyositis patients with interstitial lung disease correlate with disease activity of interstitial lung disease ^a

Variables	r S	P -value
PGRN vs LDH	0.54	0.0003
PGRN vs ferritin	0.77	<0.0001
PGRN vs KL-6	0.26	0.1034
PGRN vs CRP	0.48	0.0015

^aCRP, C-reactive protein; KL-6, Krebs von den Lungen-6; LDH, Lactate dehydrogenase; PGRN, Progranulin; r _S, Correlation coefficient established employing Spearman’s correlation coefficients. Correlations between the serum PGRN levels and LDH, ferritin, KL-6 and CRP are shown, as measured in 41 DM patients with ILD.