| EGFRvIII expression |  | ||
---|---|---|---|---|
 | Total | Negative or low | High | P-value |
Staging | Â | Â | Â | Â |
T classification# | 108 | Â | Â | Â |
 1 | 38 | 35 | 3 | <0.001 |
 2 | 36 | 20 | 16 |  |
 3 | 6 | 4 | 2 |  |
 4 | 28 | 15 | 13 |  |
N classification | 108 | Â | Â | Â |
 0 | 72 | 53 | 19 | 0.071 |
 1 | 15 | 11 | 4 |  |
 2 | 21 | 10 | 11 |  |
TNM stage | 108 | Â | Â | Â |
 1 | 30 | 29 | 1 | <0.001 |
 2 | 24 | 13 | 11 |  |
 3 | 13 | 10 | 3 |  |
 4 | 41 | 22 | 19 |  |
Factors | Â | Â | Â | Â |
EGFR GCN amplification | 104 | Â | Â | Â |
 Negative | 53 | 38 | 15 | 0.529 |
 Positive | 51 | 33 | 18 |  |
EGFR expression | 108 | Â | Â | Â |
 Negative | 39 | 27 | 12 | 1.000 |
 Positive | 69 | 47 | 22 |  |
PIK3CA GCN increase | 105 | Â | 1.000 | Â |
 Negative | 79 | 53 | 26 |  |
 Positive | 26 | 18 | 8 |  |
PTEN expression | 108 | Â | Â | Â |
 Negative | 53 | 41 | 12 | 0.064 |
Positive | 55 | 33 | 22 | Â |
pAKT expression# | 107 | Â | Â | Â |
 Negative | 14 | 11 | 3 | 0.543 |
 Positive | 93 | 63 | 30 |  |