Table 1 Characteristics of 94 patients with Ewing sarcoma and 72 patients with osteosarcoma with available ctDNA results
Ewing sarcoma cohort (n = 94) | Osteosarcoma cohort (n = 72) | |
|---|---|---|
Sex | ||
Male | 53 (56.4) | 46 (63.9) |
Female | 41 (43.6) | 26 (36.1) |
Age at diagnosis, years (median, range) | 14.1 (1.9–20.6)a | 13.6 (5.6–22.4) |
Primary disease site | ||
Pelvic | 20 (26.3)b | |
Non-pelvic | 56 (73.7) | |
Femur | 31 (43.1) | |
Tibia | 24 (33.3) | |
Humerus | 8 (11.1) | |
Fibula | 5 (6.9) | |
Other | 4 (5.6) | |
Stage at diagnosis | ||
Localised | 52 (63.4)c | 72 (100) |
Metastatic | 30 (36.6) | 0 (0) |
Time of sample acquisition | ||
Initial diagnosis | 77 (81.9) | 72 (100) |
Relapse | 17 (18.1) | 0 (0) |
