Conversely, the methylation level of Syk was lower in head and neck squamous cell carcinoma (Figure 1B), kidney renal clear cell carcinoma (Figure 1C), kidney renal papillary cell carcinoma (Figure 1D), lung adenocarcinoma (Figure 1E), lung squamous cell carcinoma (Figure 1F), and prostate adenocarcinoma (Figure 1G) compared with paired normal tissues. This evidence concerns the gene SYK and head and neck squamous cell carcinoma.