UALCAN portal analysis of GLMP expression in HNSCC based on nodal metastasis indicated that GLMP expression was significantly higher in HNSCC tissues with N0, N1, N2, and N3 LN metastases than in normal tissues, as well as in advanced tumor stages and grades (Fig. S1B–D). This evidence concerns the gene GLMP and head and neck squamous cell carcinoma.