To investigate, whether MDA-9/Syntenin plays any role in the growth and invasion of oral epithelial cell carcinomas, as the first step, we measured MDA-9/Syntenin protein expression in 81 primary HNSCC tumors from various stages including tumors positive for lymph node metastasis (Table S1). The gene discussed is SDCBP; the disease is head and neck squamous cell carcinoma.