METTL1 and head and neck squamous cell carcinoma: A key mRNA-miRNA-lncRNA regulatory network related to HNSCC prognosis was ultimately established, including four mRNAs (EIF3D, EIF1, LARP1, and METTL1), one miRNA (hsa-miR-30b-5p), and two lncRNAs (LINC00707 and SNHG16) (Figure 13E).