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Article: Promoter Hypermethylation Profiling Identifies Subtypes of Head and Neck Cancer with Distinct Viral, Environmental, Genetic and Survival Characteristics.

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Choudhury JH; Ghosh SK
PLoS ONE, 2015


10.1371/journal.pone.0129808.t002 Frequency of methylation of follow genes in normal and tumor tissues of HNSCC patients.
Genes/loci Frequency of methylation (%)
Tumor tissue Normal tissue P-value
Tumor suppressor genes
p16
Unmethylated 48 (67.6) 39 (86.7)
Methylated 23 (32.4) 6 (13.3) 0.02
DAPK
Unmethylated 50 (70.4) 40 (88.9)
Methylated 21 (29.6) 5 (11.1) 0.02
BRCA1
Unmethylated 58 (81.7) 41 (91.1)
Methylated 13 (18.3) 4 (8.9) 0.16
GSTP1
Unmethylated 49 (69) 38 (84.4)
Methylated 22 (31) 7 (15.6) 0.06
ECAD
Unmethylated 48 (67.6) 41 (91.1)
Methylated 23 (32.4) 4 (8.9) 0.04*
RASSF1
Unmethylated 35 (49.3) 35 (77.8)
Methylated 36 (50.7) 10 (22.2) 0.02*
MLH1
Unmethylated 67 (94.4) 44 (97.8)
Methylated 4 (5.6) 1 (2.2) 0.38
Tumor-specific loci
MINT1
Unmethylated 40 (56.3) 39 (86.7)
Methylated 31 (43.7) 6 (13.3) 0.01*
MINT2
Unmethylated 34 (47.9) 40 (88.9)
Methylated 37 (52.1) 5 (11.1) <0.01*
MINT31
Unmethylated 38 (53.5) 37 (82.2)
Methylated 33 (46.5) 8 (17.8) 0.01*

Wilcoxon rank-sum test was used to calculate P-value

*Bonferroni correction of significance was applied


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