Figure 1From: TIMP3 and CCNA1 hypermethylation in HNSCC is associated with an increased incidence of second primary tumorsThe methylation rates of five genes (CCNA1, TIMP3, DAPK, MGMT and SFRP1) in normal controls and HNSCC samples. x-axis, proportion of methylated cases/tested cases; y-axis, quantity of hypermethylation (gene of interest/ACTB × 100).Back to article page