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). This evidence concerns the gene CSGALNACT1 and differentiated thyroid carcinoma.