Table 1 |.

Baseline characteristics and sequencing performed for the analytical cohort (n = 345)

Variable
Age at diagnosis (years), median (range)	12 (0–27.5)
Age at enrollment (years), median (range)	13 (0.2–28.8)
Sex, n (%)
Female	151 (44)
Male	194 (56)
Race, n (%)
White	244 (71)
Black or African-American	25 (7)
Asian	14 (4)
More than one race	29 (8)
Other	33 (10)
Ethnicity, n (%)
Hispanic or Latino	32 (9)
Non-Hispanic	275 (80)
Unknown	38 (11)
Cancer diagnosis, n (%)
Osteosarcoma	64 (19)
Rhabdomyosarcoma	46 (13)
Ewing sarcoma	44 (13)
Other sarcoma	70 (20)
Renal tumor	29 (8)
Neuroblastoma	28 (8)
Liver tumor	13 (4)
Carcinoma	19 (6)
Other	32 (9)
Sequencing method, n (%)
Targeted DNA NGS only	269 (78)
Targeted DNA NGS + RNA NGS	32 (9)
Targeted DNA NGS + whole transcriptome	26 (8)
Targeted DNA NGS + RNA NGS + whole transcriptome	18 (5)