1 One first degree relative | 149 | 9 (6.0) | 4 (2.7) | 13 (8.7) |
1a One younger first degree relative‡ | 31 | 4 (12.9) | 2 (6.5) | 6 (19.4) |
1b One older first degree relative§ | 118 | 5 (4.2) | 2 (1.7) | 7 (5.9) |
2 Two second degree relatives | 41 | 3 (7.3) | 4 (9.8) | 7 (17.1) |
3 Proband diagnosis at age ⩽ 35 | 53 | 5 (9.4) | 2 (3.8) | 7 (13.2) |
4 Second or third degree relatives with diagnosis age restriction | 46 | 6 (13.0) | 3 (6.5) | 9 (19.6) |
5 and 6 Male proband or male relative | 8 | 0 (0) | 0 (0) | 0 (0) |
7 Multiple primary tumours | 36 | 2 (5.6) | 5 (13.9) | 7 (19.4) |
8 and 9 Relative with multiple primary tumours | 16 | 1 (6.3) | 1 (6.3) | 2 (12.5) |
10 Three first degree relatives with cancer | 69 | 4 (5.8) | 3 (4.4) | 7 (10.1) |
11 Ashkenazi Jewish background | 43 | 4 (9.3) | 4 (9.3) | 8 (18.6) |