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Table 3 Combined clinicopathologic analysis according to the various criteria

From: Comparative analysis of the EGFR, HER2, c-MYC, and MET variations in colorectal cancer determined by three different measures: gene copy number gain, amplification status and the 2013 ASCO/CAP guideline criterion for HER2 testing of breast cancer

Characteristics

Amplification

GCN gain

2013 ASCO/CAP guideline

Negative

Positive

P

CN< 4

4 ≤CN

P

Negative

Equivocal or positive

P

Location

  

0.403

  

0.241

  

0.213

 Right colon

79 (84.9%)

14 (15.1%)

 

69 (74.2%)

24 (25.8%)

 

67 (72.0%)

26 (28.0%)

 

 Left colon

100 (78.7%)

27 (21.3%)

 

81 (63.8%)

46 (36.2%)

 

77 (60.6%)

50 (39.4%)

 

 Rectum

89 (78.1%)

25 (21.9%)

 

75 (65.8%)

39 (34.2%)

 

74 (64.9%)

40 (35.1%)

 

pTNM stage

  

0.708

  

0.124

  

0.257

 I–III

218 (79.9%)

55 (20.1%)

 

189 (69.2%)

84 (30.8%)

 

182 (66.7%)

91 (33.3%)

 

 IV

50 (82.0%)

11 (18.0%)

 

36 (59.0%)

25 (41.0%)

 

36 (59.0%)

25 (41.0%)

 

MSI status (n = 323)

  

0.097

  

0.004

  

0.002

 MSS/MSI-L

235 (79.4%)

61 (20.6%)

 

194 (65.5%)

102 (34.5%)

 

188 (63.5%)

108 (36.5%)

 

 MSI-H

25 (92.6%)

2 (7.4%)

 

25 (92.6%)

2 (7.4%)

 

25 (92.6%)

2 (7.4%)

 
  1. MSI microsatellite instability, MSS microsatellite instability stable, MSI-L microsatellite instability-low, MSI-H microsatellite instability-high, GCN gene copy number, CN copy number, ASCO/CAP American Society of Clinical Oncology/College of American Pathologists