Chondroitin sulfate N-acetylgalactosaminyltransferase 1 (CSGALNACT1) was one of the most frequently lost genes in oral squamous cell carcinoma (OSCC; Yong et al., 2014) and follicular variant of papillary thyroid carcinoma (FVPTC; Schulten et al., 2015). The gene discussed is CSGALNACT1; the disease is oral cavity squamous cell carcinoma.