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Table 3 Tumor mutation burden between DDR-mutated BCs and non-DDR-mutated BCs

From: High tumor mutation burden is associated with DNA damage repair gene mutation in breast carcinomas

 

DDR mutated

Non-DDR mutated

Total

p Value

# (average)

% (range)

# (average)

% (range)

# (average)

% (range)

#

13

 

49

 

62

  

Age

50.7

36–70

54.6

30–78

53.8

30–78

0.2718

Specimens

Biopsy

10

76.9%

37

75.5%

47

75.8%

 

Excision

1

7.7%

9

18.4%

10

16.1%

 

Cytology

2

15.4%

3

6.1%

5

8.1%

 

Locations

primary

3

23.1%

10

20.4%

13

21.0%

NS

Metastatic

10

76.9%

39

79.6%

49

79.0%

Biomarkers

ER/PR+

10

76.9%

25

51.0%

35

56.5%

0.01769

HER2+

2

15.4%

3

6.1%

5

8.1%

TNBC

1

7.7%

21

42.9%

22

35.5%

Histologic types

Ductal, NOS

11

84.6%

41

83.7%

52

83.9%

NS

Lobular

1

7.7%

5

10.2%

6

9.7%

Metaplastic

1

7.7%

1

2.0%

2

3.2%

Neuroendocrine

0

0.0%

2

4.1%

2

3.2%

TMB

12.08

4–33

6.57

1–61

7.73

1–61

0.042909

Nuclear grade

2.5

2–3

2.4

2–3

2.5

2–3

NS

Tumor infiltrating lymphocytes

8.8%

1–25%

6.6%

0–60%

7.1%

0–60%

NS

  1. Abbreviations: DDR DNA damage repair, ER estrogen receptor, PR progesterone receptor, TNBC triple negative breast cancer, TMB tumor mutation burden