FAT1 and head and neck squamous cell carcinoma: Considering that the expression of FAT1 in SCC25 and CAL27 cells was greater than that in the other HNSCC cell lines (Fig. 1F), we used three different siRNAs to interfere with FAT1 expression in CAL27 and SCC25 cells and selected the most effective sequence for the following experiments (Fig. S2A).