CISH
|
FISH
|
---|
EGFR status
|
Chromosome 7
|
EGFR status
|
Chromosome 7
|
---|
|
Disomy
|
Polysomy
| |
Disomy
|
Polysomy
|
31 NA
|
6 (19%)
|
25 (81%)
|
30 NA
|
4 (13%)
|
26 (87%)
|
|
Disomy
|
Polysomy
| |
Disomy
|
Polysomy
|
2 A
|
0
|
2 (100%)
|
3 A
|
1 (33%)
|
2 (67%)
|
Total 33
|
6
|
27
|
33
|
5
|
28
|
- CISH: chromogenic in situ hybridization; FISH: fluorescence in situ hybridization; NA: not amplified, gene-to-chromosome 7 ratio < 2; A: amplified, gene-to-chromosome 7 ratio ≥2; Disomy: 1.6-2.0 balanced gene and chromosome 7; Polysomy: 3.1-4.4 balanced gene and chromosome 7
- Concordance 97%; k = 0.78; p < 0.0001; Sensitivity 67%; Specificity 100%; Positive predictive value 100%; Negative predictive value 97%