Table 1 Population characteristics (N = 125)

From: The molecular tumor burden index as a response evaluation criterion in breast cancer

Characteristics

No

Percentage (%)

HER2 status

Positive

0

0.0

Negative

125

100.0

Hormone receptor status

Positive

110

88.0

Negative

15

12.0

Age at diagnosis

≤35

20

16.0

35–60

96

76.8

>60

9

7.2

Tumor stage at initial diagnosis

I

17

13.6

II

41

32.8

III

32

25.6

IV

14

11.2

Unknown

21

16.8

Nuclear grade

1

2

1.6

2

56

44.8

3

20

16.0

Unknown

47

37.6

Disease-free survival (months)

≤12

24

19.2

12–24

17

13.6

24–60

43

34.4

>60

40

32.0

Unknown

1

0.8

Number of metastatic sites

1

33

26.4

2–3

72

57.6

≥4

22

17.6

Visceral metastases

  

Yes

41

32.8

No

86

68.8

Previous endocrine therapy (after confirmed tumor relapse)

Yes

33

26.4

No

92

73.6