Incidence of individual chromosome abnormalities appearing as single aberrations or associated with other aberrations
| Anomaly . | Total n (% of all cases) . | Isolated, n (%) . | Plus a single additional abnormality, n (%) . | As part of complex abnormalities, n (%) . |
|---|---|---|---|---|
| 7q− | 94 (39) | 22 (23) | 16 (17) | 54 (57) |
| +3/+3q | 60 (25) | 4 (7) | 10 (17) | 46 (77) |
| +1q | 15 (6) | 0 | 2 (13) | 13 (87) |
| 1p− | 11 (5) | 0 | 2 (18) | 9 (82) |
| 8p− | 9 (4) | 0 | 0 | 9 (100) |
| 8q+ | 4 (2) | 0 | 0 | 4 (100) |
| t(8q) | 21 (9) | 1 (5) | 0 | 20 (95) |
| 6q− | 24 (10) | 2 (8) | 5 (21) | 17 (71) |
| +12/12q+ | 30 (13) | 5 (17) | 5 (17) | 20 (66) |
| t(14q32) | 29 (12) | 2 (7) | 5 (17) | 22 (76) |
| 14q− | 8 (3) | 1 (12.5) | 3 (37.5) | 4 (50) |
| Anomaly . | Total n (% of all cases) . | Isolated, n (%) . | Plus a single additional abnormality, n (%) . | As part of complex abnormalities, n (%) . |
|---|---|---|---|---|
| 7q− | 94 (39) | 22 (23) | 16 (17) | 54 (57) |
| +3/+3q | 60 (25) | 4 (7) | 10 (17) | 46 (77) |
| +1q | 15 (6) | 0 | 2 (13) | 13 (87) |
| 1p− | 11 (5) | 0 | 2 (18) | 9 (82) |
| 8p− | 9 (4) | 0 | 0 | 9 (100) |
| 8q+ | 4 (2) | 0 | 0 | 4 (100) |
| t(8q) | 21 (9) | 1 (5) | 0 | 20 (95) |
| 6q− | 24 (10) | 2 (8) | 5 (21) | 17 (71) |
| +12/12q+ | 30 (13) | 5 (17) | 5 (17) | 20 (66) |
| t(14q32) | 29 (12) | 2 (7) | 5 (17) | 22 (76) |
| 14q− | 8 (3) | 1 (12.5) | 3 (37.5) | 4 (50) |