Most of these mutations were identical in all cell lines, such as two 5′ UTR mutations observed in neural cell adhesion molecule 1 (NCAM1) (insertion of adenine at position 112832307 (dbSNP ID: rs117108942) and deletion of cytosine at position 112832340) in virtually every HNSCC cell line in Barretina et al. Of note, 11 cell lines with the same name were characterized in both studies. This evidence concerns the gene NCAM1 and head and neck squamous cell carcinoma.