Characteristics at Diagnosis in Patients with 123I-MIBG–avid, Stage 4 Disease
| Characteristic | n |
| Total patients | 345 |
| Sex | |
| Male | 212 (61%) |
| Female | 133 (39%) |
| Age | |
| Median age | 2.9 (range, 0.2%–16.1%) |
| Age < 18 mo | 48 (14%) |
| Age ≥ 18 mo | 297 (86%) |
| MYCN status | |
| Amplified | 122 (35%) |
| Nonamplified | 182 (53%) |
| Unknown | 41 (12%) |
| ASCT | 261 (76%) |
| Chimeric antibody | 23 (7%) |
ASCT = autologous stem cell transplantation, which was performed if patient was in CR/PR with ≤ 3 123I-MIBG–avid sites and > 50% reduction of 123I-MIBG–avid osseous lesions.