sB7-H3 is upregulated in NSCLC-derived malignant pleural effusions (MPEs).
Sera and cognate MPEs have comparable and closely correlated sB7-H3 expression.
MPEs-derived sB7-H3 has equal diagnostic effectiveness with CEA and CYFRA21-1.
MPEs-derived sB7-H3 is correlated with smoking status and TNM stage of NSCLC.