A similar correlation has been reported for cell lines from oral squamous cell carcinoma (TPCN2, CCND1, ORAOV1, ANO1, FADD, PPFIA1 and EMS1 (Huang et al, 2006); FADD, PPFIA1 and EMS1 (Jarvinen et al, 2008)). Here, PPFIA1 is linked to oral cavity squamous cell carcinoma.