CXCL9 and head and neck squamous cell carcinoma: qRT-PCR and ELISA assays demonstrated that miR-375 overexpression counteracted the effect of PVT1 on the expression of IFNβ, CXCL9, CXCL10, and CXCL11 in HNSCC cells (Supplemental Fig. S6E, F).