Table 4 Breakdown of results submitted by participating laboratories

Correct result and

correct nomenclature used

106

248

193

122

115

Correct result

(variant uncharacterised)

125

N/A

10

88

4

Correct result

(incorrect nomenclature)

12

N/A

43

39

26

One of the two variants present not reported

N/A

N/A

7

N/A

79

False negative result

13

N/A

3

3

24

False positive result

2

5

1

5

0

Incorrect EGFR variant reported

1

N/A

1

1

6

Technical failure

3

8

4

4

7

Not marked

2

2

1

1

2