This may be because PART1 is located on chromosome 5q12, a region that is usually lost in oral squamous cell carcinoma (OSCC) and head and neck squamous cell carcinoma (HNSCC) (Abou-Elhamd & Habib, 2008; Noutomi et al., 2006). This evidence concerns the gene PART1 and oral cavity squamous cell carcinoma.