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Table 3 Peaks differentially expressed among intrinsic subtypes at a feature selection P < 0.001

From: Protein and lipid MALDI profiles classify breast cancers according to the intrinsic subtype

mz

p

Relative peak intensity

 

Assignment

  

Luminal

HER2+

Triple-negative

 

p514.32

0.0006

2.2

3.8

2.0

 

p515.2

0.0007

1.7

2.8

1.3

 

p531.34

0.0002

1.3

2.4

1.1

 

p534.25

0.0001

1.8

3.0

1.5

PC {16:1} [M+H]+

p535.22

0.0001

1.2

1.7

1.1

 

p578.67

0.0000

14.6

5.3

3.1

 

p644.33

0.0004

3.6

2.1

1.5

 

p678.32

0.0006

4.8

4.6

2.6

 

p706.52

0.0003

2.4

2.7

5.7

PC {30:0} [M+H]+

p732.58

< 0.001

1.3

2.7

11.0

PC {32:1} [M+H]+

n505.37

0.0001

13.2

90.5

78.1

 

n527.44

0.0005

4.5

1.6

1.6

 

n545.56

< 0.001

5.0

1.5

1.7

 

n552.56

0.0003

2.3

1.1

1.1

 

n554.49

< 0.001

3.8

1.2

1.2

 

n587.67

0.0009

4.3

1.6

1.7

 

n589.59

0.0002

3.6

1.4

1.4

 

n627.71

0.0008

4.7

1.9

2.1

 

n631.89

0.0005

2.5

1.3

1.2

 
  1. 1Ratio, cancer/normal
  2. p, lipids identified in the positive ion mode
  3. n, lipids identified in the negative ion mode