Table 2. PIK3CA amplification status according to liposarcoma histologic subtype.
| Histologic classification | Normal Copy Number | Copy Number Gain | ||
|---|---|---|---|---|
| Polysomy | Amplification | Total, n (%) | ||
| Well- and De-differentiated | 33 | 6 | 3 | 9 (21.4) |
| Well- differentiated | 30 | 6 | 3 | |
| De-differentiated | 3 | 0 | 0 | |
| Myxoid/Round cell, Pleomorphic | 54 | 5 | 0 | 5 (8.5) |
| Myxoid/ Round cell | 49 | 3 | 0 | |
| Pleomorphic | 5 | 2 | 0 | |
| Total, n (%) | 87 (86.1) | 11 (10.9) | 3 (3.0) | |
| 14 (13.9) | ||||