TABLE 2.

Correlations between serum biomarkers and 6 month change in physiological parameters

	6 month change in FVC % predicted		6 month change in DLCO % predicted
	rs	p-value	rs	p-value
First time point
Serum KL-6	−0.25	0.07	−0.13	0.36
Serum SP-D	−0.09	0.51	−0.07	0.63
6 month change
Serum KL-6	−0.38	<0.01	−0.33	0.01
Serum SP-D	−0.37	<0.01	−0.14	0.32

FVC: forced vital capacity; D_LCO: diffusing capacity of the lung for carbon monoxide; KL-6: Krebs von den Lungen-6; SP-D: surfactant protein-D.