Table.
Number of affected relatives | |||||||
---|---|---|---|---|---|---|---|
None | 1 | 2 | ≥3 | ||||
1 FDR | No FDR | ≥1 FDR | No FDR | ≥1 FDR | No FDR | ||
No germline mutation | No | No | No | Yes (92% if 2 FDRs and 78% if 1 FDR) |
No 25% |
Yes 92% |
--- |
BRCA1 | --- | Indeterminate 69% |
--- | Yes 78% |
Indeterminate 69% |
Yes 78% |
--- |
BRCA2 | Indeterminate 51% |
Yes 86% |
--- | Yes 90% |
Yes 90% |
Yes 90% |
--- |
PALB2 | No | Yes 78% |
--- | Yes 78% |
--- | Yes 78% |
--- |
STK11 | Yes 96% |
Yes 96% |
Yes 96% |
Yes 96% |
Yes 96% |
Yes 96% |
Yes 96% |
CDKN2A | Indeterminate 57% |
Yes 88% |
Indeterminate 57% |
Yes 88% |
Indeterminate 57% |
Yes 88% |
Indeterminate 57% |
Lynch syndrome* | No | Yes 88% |
No 44% |
Yes 88% |
Indeterminate 53% |
Yes 88% |
Indeterminate 53% |
Associated with MLH1, MSH2, MSH6, or PMS2 gene mutations.