Table 2. The gene amplification and deletion events in breast cancer patients.
Young Group | Old Group | ||||
Positive n | Negative n | Positive n | Negative n | ||
Rb1 deletion* | 61 | 135 | 23 | 204 | 0.000 |
CHEK2 deletion* | 91 | 105 | 44 | 183 | 0.000 |
CCND1 amplification* | 46 | 150 | 52 | 175 | 0.891 |
c-Myc amplification* | 56 | 140 | 30 | 197 | 0.000 |
*In all the gene mutation events, the following are excluded: 3 Rb1 amplification cases (1 old, 2 young), 1 CHEK2 amplification case (1 young), 2 CCND1 deletion case (1 old, 1 young), 2 c-Myc deletion cases (1 old, 1 young).