CD276 and head and neck squamous cell carcinoma: discovered that in human head and neck squamous cell carcinoma, the 3′-untranslated region (3′-UTR) of B7 homolog 3 (B7-H3) can bind to microRNA-214-3p (miR-214-3p), and overexpression of miR-214-3p inhibits the expression of B7-H3 (28).