ST6GALNAC1 and head and neck squamous cell carcinoma: As shown Figure 2A, the hazard ratio of ATP8A1, ACACB, A2G2D, SMPD3, LPIN1, FUT2, CD38, ST6GALNAC1, GATM, and EPHX3 was less than 1, indicating they were protective genes for HNSCC.