Table 2.

Methylation status in paired (n=39) tumorous and non-tumorous tissues from the same patient.

Gene	T−/NT−(%)	T−/NT+ (%)	T+/NT−(%)	T+/NT+ (%)
p16	7 (18%)	1 (3%)	25 (64%)	6 (15%)
SOCS-1	1 (3%)	3 (8%)	3 (8%)	32 (82%)
RASSF1A	0 (0%)	0 (0%)	12 (31%)	27 (69%)
APC	2 (5%)	0 (0%)	29 (74%)	8 (21%)
GSTP1	17 (44%)	1 (3%)	20 (51%)	1 (3%)
RIZ1	8 (21%)	1 (3%)	27 (69%)	3 (8%)
MGMT	33 (85%)	6 (15%)	0 (0%)	0 (0%)
Average %	25%	4%	42%	28%

T, tumorous; NT, non-tumorous; (−) indicates no promoter methylation and (+) indicates promoter methylation in tumorous or non-tumorous tissues