Number and percentage of karyotypic abnormalities identified by G-banding in the myeloproliferative disorders.
| Abnormality . | Polycythemia Vera . | Idiopathic Myelofibrosis . | Essential Thrombocythemia . |
|---|---|---|---|
| Deletion of 20q | 45 (8.4%) | 28 (7.1%) | 1 (0.2%) |
| Deletion of 13q | 16 (3.0%) | 25 (6.3%) | 3 (0.7%) |
| Trisomy 8 | 37 (6.9%) | 20 (5.0%) | 4 (0.9%) |
| Trisomy 9 | 35 (6.6%) | 4 (1.0%) | 1 (0.2%) |
| Trisomy of 1q | 19 (3.6%) | 14 (3.5%) | 0 |
| Deletion of 7q or monosomy 7 | 5 (0.9%) | 15 (3.8%) | 0 |
| Deletion of 5q or monosomy 5 | 17 (3.2%) | 6 (1.5%) | 0 |
| Total number of patients with one or more abnormality | 180 (33.7%) | 157 (39.5%) | 23 (5.0%) |
| Total patients | 534 | 397 | 456 |
| Data taken from papers reviewed by Bench and colleagues.20 | |||
| Abnormality . | Polycythemia Vera . | Idiopathic Myelofibrosis . | Essential Thrombocythemia . |
|---|---|---|---|
| Deletion of 20q | 45 (8.4%) | 28 (7.1%) | 1 (0.2%) |
| Deletion of 13q | 16 (3.0%) | 25 (6.3%) | 3 (0.7%) |
| Trisomy 8 | 37 (6.9%) | 20 (5.0%) | 4 (0.9%) |
| Trisomy 9 | 35 (6.6%) | 4 (1.0%) | 1 (0.2%) |
| Trisomy of 1q | 19 (3.6%) | 14 (3.5%) | 0 |
| Deletion of 7q or monosomy 7 | 5 (0.9%) | 15 (3.8%) | 0 |
| Deletion of 5q or monosomy 5 | 17 (3.2%) | 6 (1.5%) | 0 |
| Total number of patients with one or more abnormality | 180 (33.7%) | 157 (39.5%) | 23 (5.0%) |
| Total patients | 534 | 397 | 456 |
| Data taken from papers reviewed by Bench and colleagues.20 | |||