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Table 4 Characteristics of MMTLV positive and negative breast cancer in Chinese women

From: Prevalence and characteristics of mouse mammary tumor virus-like virus associated breast cancer in China

Variables

Number of MMTLV positive cases (%)

Number of MMTLV negative cases (%)

P-value a

Ages (years)

  

0.68

 <35

0 (0.00)

3 (3.06)

 

 35–50

10 (47.62)

49 (50.00)

 

 >50

11 (52.38)

46 (46.94)

 

Sample source (province)

  

0.03

 Northern China

19 (90.48)

65 (66.33)

 

 Southern China

2 (9.52)

33 (33.67)

 

Histological type

  

0.61

 Invasive ductal carcinoma

20 (95.24)

87 (88.78)

 

 Invasive lobular carcinoma

1 (4.76)

8 (8.16)

 

 Mucious Adenocarcinoma

0 (0.00)

3 (3.06)

 

Histological grade b

  

0.77

 GradeI

8 (38.10)

40 (46.51)

 

 GradeII

11 (52.38)

38 (44.19)

 

 GradeIII

2 (9.52)

8 (9.30)

 

Lymph node involvement

  

0.21

 Positive

8 (38.10)

52 (53.06)

 

 Negative

13 (61.90)

46 (46.94)

 

Position

  

0.82

 Right

13 (61.90)

58 (59.18)

 

 Left

8 (38.10)

40 (40.82)

 

Estrogen receptor

  

0.73

 Positive

12 (57.14)

52 (53.06)

 

 Negative

9 (42.86)

46 (46.94)

 

Progesterone receptor

  

0.54

 Positive

12 (57.14)

63 (64.29)

 

 Negative

9 (42.86)

35 (35.71)

 

HER-2

  

0.02

 −/1+

6 (28.57)

55 (56.12)

 

 2+/3+

15 (71.43)

43 (43.88)

 
  1. a P value was calculated by χ2 or Fisher’s tests and was considered to be statistically significant for P<0.05. Bold values indicate significant correlation
  2. b Histological grade was performed only in specimens with invasive ductal carcinoma