Table I.

Patient Demographics and Baseline Characteristics (Total Population N=205)

Characteristic	N (% of total)
Median age, years (range)	16.5 (5–51)
Male, N (%)	127 (62%)
Caucasian/Hispanic/Black/Asian/other (N)	149/32/14/6/3
Disease status at study entry
No active disease after surgery, N (%)	57 (29%)
Active disease after surgery, N (%)	143 (72%)
Local Relapse, N (%)	9 (6%)
Metastatic, N (%)	132 (64%)
Pulmonary	107 (52%)
Bone	9 (4%)
Other	21 (10%)
Indicator lesions, N (%)	79 (39%)
Lesion site, N (%)
Primary tumor	14 (8)
Lung metastases	72 (35%)
Other (e.g. bone or soft tissue metastases)	11 (5%)
Median time from initial osteosarcoma diagnosis to first mifamurtide dose, months (range)	24 (1–136)