Table 1.

MDM2-ALT1.

Characteristic	MDM2-ALT1 Present, n (%)	MDM2-ALT1 Absent, n (%)	P Value (Fisher Exact Test)
IRSG stage
I	4 (14.3%)	6 (30%)	.0043
II	6 (21.4%)	1 (5%)
III	7 (25%)	12 (60%)
IV	11 (39.3%)	1 (5%)
RMS risk level
Low	4 (13.8%)	5 (25%)	.0288
Intermediate	14 (48.3%)	14 (70%)
High	11 (37.9%)	1 (5%)

	n (Estimated Survival %)	n (Estimated Survival %)	P Value (Log-Rank Test)
Survival (5 years)
Low risk	4 (66.7%)	5 (100%)	.2395
Intermediate risk	14 (71.4%)	14 (74.1%)
High risk	11 (67.5%)	1 (100%)