Table 1.
Group (n) | Criteria | Number of probands |
---|---|---|
EO (37) | Onset of cancer ≤40 years | 37 |
Ashk-FH (40) | Onset of cancer ≤40 years with family history | 12 |
Onset of cancer >40 years with family history | 28 | |
FH (57) | Onset of cancer ≤40 years with family history | 31 |
Onset of cancer >40 years with family history | 26 | |
Total | 134 |
n: total number of probands per group. EO: Early onset; Ashk: Ashkenazi; FH: Family history, defined as: at least 2 members of 1st or 2nd degree with breast and/or ovarian cancer.