B7-H4 Expression Is Associated with Tumor Progression and Prognosis in Patients with Osteosarcoma

الملخص EN

Increasing evidences have demonstrated that B7-H4 is associated with tumor development and prognosis.

However, the clinical significance of B7-H4 expression in human osteosarcoma (OS) remains unclear.

The aim of present study was to examine the B7-H4 expression and to explore its contribution in OS.

B7-H4 expression in OS tissues was examined by immunohistochemistry.

Soluble B7-H4 (sB7-H4) levels in blood were examined by ELISA.

The association of B7-H4 expression with clinicopathological factors or prognosis was statistically analyzed.

Our findings demonstrated that B7-H4 expression in OS tissues was significantly higher than those in paired normal bone tissues ( P < 0.001 ).

sB7-H4 level in OS serum samples was significantly higher than that in healthy controls ( P = 0.005 ).

High B7-H4 expression in tissues and sB7-H4 level were both correlated with advanced tumor stage ( P < 0.001 , P = 0.017 , resp.) and distant metastasis ( P = 0.034 , P = 0.021 , resp.).

Additionally, high B7-H4 expression or serum sB7-H4 levels were significantly related to poor overall survival ( P = 0.028 , P = 0.005 , resp.).

B7-H4 in tissues and serum samples were an independent factor for affecting the survival time of OS patients ( P = 0.004 , P = 0.041 , resp.).

Collectively, our data suggest that the evaluation of B7-H4 expression in tissues and blood is a useful tool for predicting the progression of osteosarcoma and prognosis.