Table 3
Genetic testing and outcome in 100%, 50%, and 25% risk carriers in the 18 HNPCC families
25%
Pre-test risk
100%
50%
Parent alive
Parent dead
Total
Total
Number
60
308
64
91
155
523
Tested
52 (87%)
175 (57%)
3 (5%)
30 (33%)
33 (21%)
260 (50%)
Mutation carrier
50 (96%)
80 (46%)
0
3 (10%)
3 (9%)
133 (51%)