Serum KL-6 is a predictor of outcome in pulmonary alveolar proteinosis

Table 2 Prognostic value of serum KL-6 for disease progression and for necessity of treatment with repeated WLL

	Se (%)	Sp (%)	PPV	NPV	Accuracy
KL-6 ≥1526 U/mL
Disease progression	81	94	93	84	88
KL-6 ≥2157 U/mL
Necessity of repeated WLL	83	96	91	92	94

Se=sensitivity, Sp=specificity, PPV= positive predictive value, NPV= negative predictive value.

ISSN: 1750-1172