CTTN and head and neck squamous cell carcinoma: Our results showed that metastatic or primary persistent HNSCC cancer cells (UT-SCC-19B, −24B and −42B) displayed higher invasive capacity than corresponding cells from primary tumor (UT-SCC-19A,−24A and −42A) (Fig. 4) explaining differences in localization of liprin-α1 and cortactin in different types of cell lines.