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Table 3 Percentage ER hypermethylation in relation to tumor phenotype

From: ESR1gene promoter region methylation in free circulating DNA and its correlation with estrogen receptor protein expression in tumor tissue in breast cancer patients

Test result

Luminal A

Luminal B

Triple negative

HER2(+)

P

n

%

n

%

n

%

n

%

(−) ESR1 < 0.02

28

(71%)

14

(64%)

3

(20%)

4

(40%)

<0.05

(+) ERS1 > 0.02

11

(28%)

8

(36%)

12

(80%)

6

(60%)

<0.05

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BMC Cancer

ISSN: 1471-2407

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