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Table 2 Comparison of HRM and pyrosequencing results in 61 CRC samples

From: A rational two-step approach to KRAS mutation testing in colorectal cancer using high resolution melting analysis and pyrosequencing

 

Run 1

Run 2

Summary

Summary of Results

HRM

n

%

n

%

n

%

 Number of samples

61

100.0

7

100.0 (11.5)

61

100.0

 Analysis passed

50

82.0

7

100.0

57

93.4

  WT (total)

32

64.0

6

85.7

38

66.7

  WT (skewed HRM curve)

24

75.0

2

33.3

26

68.4

  Mutant (total)

18

36.0

1

14.3

19

33.3

  Mutant (skewed HRM curve)

0

 

0

 

0

 

 Analysis failed

11

18.0

0

   

Pyrosequencing

n

%

n

%

n

%

 Number of samples

61

100.0

1

100.0 (1.6)

61

100.0

 Analysis passed

60

98.4

1

100.0

61

100.0

  WT (total)

41

68.3

0

 

41

67.2

  WT (call: WT)

35

58.3

  

35

 

  WT (call: potential low level mutation)

6

10.0

0

 

6

 

  Mutant

19

31.7

1

100.0

20

32.8

 Analysis failed

1

1.6

0

   

Concordance of Results

HRM

Pyrosequencing

 

n

%

n

%

 Number of samples

57

100

57

100

 WT (total)

38

66.7

37

64.9

  WT (call: WT)

  

33

57.9

  WT (call: potential low level mutation)

  

4

7.0

 Mutant

19

33.3

20

35.1

 Concordant

56

98.2

  

 Discordant

1

1.8

  

 Correctly classified WT

37

97.4

  

 Incorrectly classified WT

1

2.6

  

 Correctly classified mutant

19

100

  

 Incorrectly classified mutant

0

0

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