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Table 1 The frequency of gene promoter methylation of 10 tumor suppressor genes in NPC, high risk and normal subjects.

From: Epigenetic markers for early detection of nasopharyngeal carcinoma in a high risk population

Gene

NPC group (paraffin and/or brushing)

High Risk Group (brushing)

EBV-normal carriers (brushing)

CHFR

31/53 (58.5%)

0/22 (0.0%)

0/25 (0.0%)

RIZ1

30/53 (56.6%)

0/22 (0.0%)

0/25 (0.0%)

WIF1

30/49 (61.2%)

4/22 (18.2%)

0/25 (0.0%)

p16

35/53 (66.0%)

6/22 (27.2%)

0/25 (0.0%)

RASSF2A

14/48 (29.2%)

0/22 (0.0%)

0/25 (0.0%)

RASSF1A

40/53 (75.5%)

0/22 (0.0%)

1/25 (4.0%)

DAPK1

42/53 (79.2%)

9/22 (40.9%)

12/25 (48.0%)

DLC1

40/52 (76.9%)

9/22 (40.9%)

16/25 (64.0%)

CDH13

41/53 (77.4%)

16/22 (72.7)

16/25 (64.0%)

CADM1

37/53 (69.8%)

8/22 (36.4%)

18/25 (72.0%)

  1. In NPC group methylation status was determined either from paraffin or brushing DNA.
  2. Frequency is presented in order of percentage in EBV-normal group from the smallest to the largest