Table 1.
Association of patient factors with engraftment.
| Factor | No. of Samples | Engrafted (%) | No. of Engrafted | Odds Ratio (95% CI) | P |
|---|---|---|---|---|---|
| Age (years) | |||||
| <12 | 36 | 30.6 | 11 | ||
| ≥12 | 32 | 59.4 | 19 | 3.88 (1.1–14.3) | 0.042 |
| Tumor type | |||||
| All | 68 | 44.1 | 30 | ||
| Ewing sarcoma | 41 | 41.5 | 17 | ||
| Osteosarcoma | 12 | 41.7 | 5 | 0.99 (0.2–5.6) * | |
| Rhabdomyosarcoma | 15 | 53.3 | 8 | 1.97 (0.4–10.7) * | 0.69 |
| Alveolar | 9 | 66.7 | 6 | ||
| Embryonal | 6 | 33.3 | 2 | ||
| Timing of surgery | |||||
| Diagnosis | 31 | 22.6 | 7 | ||
| Relapse | 37 | 62.2 | 23 | 15.4 (1.3–182.8) | 0.031 |
| Biopsy origin | |||||
| Limbs | 22 | 31.8 | 7 | ||
| Head and neck | 14 | 64.3 | 9 | 21.1 (0.04–11 056.5) † | |
| Chest wall and ribs | 7 | 42.9 | 3 | 3.4 (0.05–215.9) † | |
| Lung or pleura | 13 | 61.5 | 8 | 15 (0.07–3,075.8) † | |
| Pelvic bones | 3 | 33.3 | 1 | 1.2 (0.01–134.4) † | 0.17 |
| Muscle | 2 | 100 | 2 | ‡ | |
| Testes | 1 | 0 | 0 | ‡ | |
| Vertebral spine | 6 | 0 | 0 | ‡ | |
| Metastasis at diagnosis | |||||
| No | 48 | 37.5 | 18 | ||
| Yes | 20 | 60.0 | 12 | 3.62 (0.64–20.50) | 0.15 |
*
Compared to Ewing sarcoma.
†
Compared to limbs.
‡
Excluded from statistical analysis of biopsy origin due to lack of an event in the number of engrafted or nonengrafted samples.