Segregation analysis of FDR in the pedigree of EC probands.
| No. of siblings in each household | No. of families | Total number of siblings | No. of cancer patients in siblings | No. of families with only 1 patient in siblings |
|---|---|---|---|---|
| 1 | 15 | 15 | 15 | 15 |
| 2 | 51 | 102 | 68 | 36 |
| 3 | 35 | 105 | 50 | 25 |
| 4 | 53 | 212 | 56 | 46 |
| 5 | 67 | 335 | 95 | 40 |
| 6 | 42 | 252 | 61 | 24 |
| 7 | 14 | 98 | 19 | 10 |
| 8 | 6 | 48 | 10 | 2 |
| 9 | 1 | 9 | 3 | 0 |
| 10 | 1 | 10 | 1 | 1 |
| Total | 285 | 1186 (T) | 378 (R) | 199 (J) |