HNSCC cells treatment with miR‐206 inhibitor exhibited a higher cell growth rate and higher fluorescence intensity than blank and NC (P < 0.05), while that treated with miR‐206 mimic or si‐STC2 presented opposite results (P < 0.05); co‐treatment of miR‐206 inhibitor + si‐STC2 showed reduced cell growth rate and fluorescence intensity in contrast to miR‐206 inhibitor (Figure 7G‐I) (P < 0.05). This evidence concerns the gene STC2 and head and neck squamous cell carcinoma.