| No. of patients | 88 |
| Male/female | 63/25 (72%/28%) |
| Age, y | |
| Median | 36 y |
| Range | 20-40 y |
| Prior therapy | |
| None | 42 |
| Splenectomy alone | 7 |
| Interferon alone | 17 |
| Splenectomy, interferon | 15 |
| Splenectomy, interferon, 2′-deoxycoformycin | 2 |
| Chlorambucil, splenectomy | 1 |
| Chlorambucil, interferon, splenectomy | 3 |
| Other regimens | 1 |
| Duration from diagnosis of HCL to the first cladribine course | |
| Median | 16 mo |
| Range | 2 d to 470 mo |
| Peripheral blood hematologic parameters | |
| Absolute neutrophil count (×109/L) | |
| Median (range) | 0.6 (0.1-2.7) |
| White blood cell count (×109/L) | |
| Median (range) | 2.8 (0.3-30.3) |
| Hemoglobin level (g/dL) | |
| Median (range) | 10.7 (3.2-16.1) |
| Platelets (×109/L) | |
| Median (range) | 63 (11-136) |
| No. of patients | 88 |
| Male/female | 63/25 (72%/28%) |
| Age, y | |
| Median | 36 y |
| Range | 20-40 y |
| Prior therapy | |
| None | 42 |
| Splenectomy alone | 7 |
| Interferon alone | 17 |
| Splenectomy, interferon | 15 |
| Splenectomy, interferon, 2′-deoxycoformycin | 2 |
| Chlorambucil, splenectomy | 1 |
| Chlorambucil, interferon, splenectomy | 3 |
| Other regimens | 1 |
| Duration from diagnosis of HCL to the first cladribine course | |
| Median | 16 mo |
| Range | 2 d to 470 mo |
| Peripheral blood hematologic parameters | |
| Absolute neutrophil count (×109/L) | |
| Median (range) | 0.6 (0.1-2.7) |
| White blood cell count (×109/L) | |
| Median (range) | 2.8 (0.3-30.3) |
| Hemoglobin level (g/dL) | |
| Median (range) | 10.7 (3.2-16.1) |
| Platelets (×109/L) | |
| Median (range) | 63 (11-136) |