Table 4.
Regions of gains and losses, significantly different between the MBC and BLC groups
| Chromosome | Region | Alteration | Start position (bp) | End position (bp) | MBC | BLC | Median frequency (percentage) | p |
| 3 | 3q27 | G | 159,935,817 | 163,800,681 | G | 30.3 | 0.049 | |
| 4 | 4p15.2-15.1 | L | 27,441,218 | 30,744,383 | L | 34.8 | 0.025 | |
| 9 | 9p24 | G | 628,053 | 2,280,507 | G | 30.3 | 0.0146 | |
| 9 | 9p24 | G | 3,447,196 | 7,740,086 | G | 30.3 | 0.022 | |
| 9 | 9p13 | G | 36,830,822 | 40,205,823 | G | 31.8 | 0.011 | |
| 10 | 10p14-13 | G | 10,572,971 | 15,532,695 | G | 53.0 | 0.018 | |
| 16 | 16q24 | G | 85,913,563 | 88,552,226 | G | 25.8 | 0.01525 | |
| X | Xq12–13 | L | 66,582,902 | 71,458,243 | L | 38.5 | 0.001 |
MBC, medullary breast carcinoma; BLC, basal-like carcinoma; G, gain; L, loss. Start and end coordinates of the regions are indicated in bp (May 2004 working draft).