“Suppose you had a patient whose aunt or grandmother on her father’s side carries the BRCA1 gene mutation for breast/ ovarian cancer syndrome. In your opinion, could your patient also be a carrier of this mutation?” |
•Yes ‡ | 15 (71) | (90) 18 | .219 |
•No | 2 (10) | 1 (5) | |
•Not sure | 4 (19) | 1 (5) | |
“In your opinion, what percentage of female breast cancer patients has a BRCA1 or BRCA2 gene mutation?” |
•< 100%‡ | 19 (90) | 18 (90) | > .99 |
•> 10%–100% | 0 | 1 (5) | |
•Not sure | 2 (10) | 1 (5) | |
“In your opinion, what percentage of patients who carry a gene for hereditary non-polyposis colorectal cancer will actually go on to develop colorectal cancer?” |
•< 50% | 9 (43) | 7 (35) | .031§ |
•≥ 50%‡ | 5 (24) | 10 (50) | |
•Not sure | 7 (33) | 3 (15) | |