Table I.

Overview of demographic data.

Variable	Tumor tissue	Normal tissue
Number of samples tested	46	11
Lost to follow-up, n (%)	3 (6.5)	2 (18.2)
FOXM1 expression
Median	1.21	0.12
SD	1.53	0.14
95% CI	1.26–2.18	0.09–0.26
Gender
Female, n (%)	16 (34.8)	4 (36.4)
Male, n (%)	30 (65.2)	7 (63.6)
Female:male	1:1.9	1:1.8
Age at operation
Median	37.6 months	36.9 months
Range	0–17 years	2–62 months
Relapse, n (%)	5 (11.6)	1 (11.1)
Mortality from disease, n (%)	4 (9.3)	1 (11.1)
Histology, n (%)	n=43
Blastemal	15 (34.9)	n.a.
Diffuse and focal anaplastic	2 (4.7)	n.a.
Epithelial	7 (16.3)	n.a.
Stromal	2 (4.7)	n.a.
Other	17 (39.5)	n.a.
SIOP stage, n (%)	n=43	n=9
1	16 (37.2)	3 (33.3)
2	3 (7.0)	0 (0.0)
3	6 (14.0)	2 (22.2)
4	3 (7.0)	0 (0.0)
5	15 (34.9)	4 (44.4)
Doxorubicin administered, n (%)	9 (20.9)	3 (33.3)

FOXM1, forkhead box M1; SD, standard deviation; CI, confidence interval; SIOP, International Society of Pediatric Oncology; n.a., not applicable.