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| Number of patients | 198 |
| Male:Female ratio | 1.7:1 |
| Age, yr: median (range) | 69 (37–91) |
| IGHV mutational status | |
| Unmutated | 79 (40%) |
| Mutated | 119 (60%) |
| Monoclonal B-cell lymphocytosis (MBL; typical CLL type) | 1 |
| Small lymphocytic lymphoma (SLL) | 4 |
| CLL Patients | 193 |
| Stage 0 | 97 (50%) |
| Stages I/II | 74 (38%) |
| Stages III/IV | 18 (9%) |
| Unknown | 4 (2%) |
a The definitions of CLL, SLL and MBL are from the international workshop on CLL [18].
