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| Characteristics | Median (range) | Number of patients/percentage |
|---|---|---|
| Sex | ||
| Female | 30 | |
| Male | 36 | |
| Age | 63 (38–85) | |
| Rai stadium | ||
| 0 | 31% | |
| I | 17% | |
| II | 30% | |
| III | 8% | |
| IV | 14% | |
| CD38 expression | ||
| Negative | 56% | |
| Positive | 44% | |
| ZAP-70 expression | ||
| Negative | 68% | |
| Positive | 32% | |
| Cytogenetics | ||
| Low-risk | 60% | |
| High-risk | 40% | |
| First-line therapy | ||
| Fludarabine-based regimens | 30 | |
| Chlorambucil+/−Prednisone | 7 | |
| Bendamustine | 1 |
