Table 1.
Clinical characteristics of patients with acute lymphoblastic leukemia.
| Features | Cases (n = 423) | |
|---|---|---|
| n | % | |
| Gender | ||
| Male | 245 | 57.9 |
| Female | 178 | 42.1 |
| Age group (years) | ||
| <1 | 9 | 2.1 |
| 1–9 | 258 | 61.0 |
| ≥10 | 156 | 36.9 |
| Age at diagnosis (years) | ||
| Median (min–max) | 7.9 (0–18) | |
| BM blast at diagnosis (%) | ||
| <90 | 135 | 31.7 |
| ≥90 | 288 | 68.3 |
| Median (min–max) | 85.3 (20–100) | |
| Inmunophenotype | ||
| Pre-B Cell | 386 | 91.2 |
| Cell-T | 29 | 6.9 |
| Biphenotype | 8 | 1.9 |
| NCI risk classification | ||
| Standard risk | 214 | 50.6 |
| High risk | 209 | 49.4 |
| Relapse | ||
| No | 346 | 81.8 |
| Yes | 77 | 18.2 |
| Relapse site | ||
| Isolated BM | 52 | 67.5 |
| Isolated CNS | 17 | 22.1 |
| BM and CNS | 2 | 2.6 |
| BM and CNS and eye | 1 | 1.3 |
| CNS and eyes | 1 | 1.3 |
| BM and testis | 3 | 3.9 |
| Ovary | 1 | 1.3 |
| Death | ||
| No | 364 | 86.0 |
| Yes | 59 | 14.0 |
WBC, whole blood cell count; BM, bone marrow; NCI, National Cancer Institute; CNS, central nervous system.