CSMD1 and head and neck squamous cell carcinoma: Toomes et al. and other scientists showed a hemizygous or homozygous deletion of the chromosome band at 8p23 encoding the CSMD1 protein in different cancer types such as oropharyngeal squamous cell carcinomas (OSCCs) and head and neck squamous cell carcinomas (HNSCCs) [1,61,62,63].