Demographic and clinical characteristics at presentation in 41 children with relapsed ALL
. | Patients with at least one original sequence conserved at relapse . | Patients with only new sequence at relapse . | P . |
|---|---|---|---|
| N | 33 | 8 | |
| Age, y | .68 | ||
| Median (range) | 4.2 (0.1-17.1) | 3.5 (0.3-17.4) | |
| Sex (%) | .43 | ||
| Male | 22 (67) | 4 (50) | |
| Female | 11 (33) | 4 (50) | |
| WBC, × 109/L (%) | .37 | ||
| 0 to less than 20 | 19 (58) | 3 (37) | |
| 20 to less than 50 | 6 (18) | 1 (13) | |
| 50 to less than 100 | 2 (6) | 2 (25) | |
| 100 or more | 6 (18) | 2 (25) | |
| Immunophenotype (%) | 1.0 | ||
| B cell | 31 (94) | 8 (100) | |
| T cell | 2 (6) | 0 (0) | |
| Time to relapse, mo | .07 | ||
| Median (range) | 29.9 (7.4-68.4) | 10.5 (6.0-54.5) |
. | Patients with at least one original sequence conserved at relapse . | Patients with only new sequence at relapse . | P . |
|---|---|---|---|
| N | 33 | 8 | |
| Age, y | .68 | ||
| Median (range) | 4.2 (0.1-17.1) | 3.5 (0.3-17.4) | |
| Sex (%) | .43 | ||
| Male | 22 (67) | 4 (50) | |
| Female | 11 (33) | 4 (50) | |
| WBC, × 109/L (%) | .37 | ||
| 0 to less than 20 | 19 (58) | 3 (37) | |
| 20 to less than 50 | 6 (18) | 1 (13) | |
| 50 to less than 100 | 2 (6) | 2 (25) | |
| 100 or more | 6 (18) | 2 (25) | |
| Immunophenotype (%) | 1.0 | ||
| B cell | 31 (94) | 8 (100) | |
| T cell | 2 (6) | 0 (0) | |
| Time to relapse, mo | .07 | ||
| Median (range) | 29.9 (7.4-68.4) | 10.5 (6.0-54.5) |
WBC indicates white blood cell count.