Skip to main content
. 2021 Apr 21;11:632094. doi: 10.3389/fonc.2021.632094

Table 1.

Characteristics of pediatric patients with or without WT1 mutations.

  All patients WT1-mutated case WT1 wildtype case P-value
Number (%) 870 58 (6.7%) 812(93.3%)
Age, median (year) 9.6 11 9.5 0.221
<3years, n (%) 211(24.3%) 6 (10.3%) 205 (25.2%) 0.011
3≤Age<10years, n (%) 237(27.2%) 19 (32.8%) 218 (26.8%) 0.329
10≤Age<18years, n (%) 422(48.5%) 33 (56.9%) 389 (47.9%) 0.186
Sex 0.119
male, n (%) 454 (52.2%) 36 (62.1%) 418 (51.5%)
female, n (%) 416 (47.8%) 22 (37.9%) 394 (48.5%)
WBC, ×109/L,
Median (range) 31.7(0.2-610) 56.9(1.1-446) 30.8(0.2-610) 0.041
FAB classification: n (%) 0.001
M0 20 (2.8%) 1 (2.0%) 19 (2.9%) >0.999
M1 96 (13.4%) 10 (19.6%) 86 (13.0%) 0.181
M2 193 (27.0%) 11 (21.6%) 182 (27.5%) 0.362
M3 2 (0.3%) 0 (0.0%) 2 (0.3%) >0.999
M4 193 (27.0%) 21 (41.2%) 172 (25.9%) 0.018
M5 160 (22.4%) 3 (5.9%) 157 (23.7%) 0.003
M6 11 (1.5%) 4 (7.8%) 7 (1.1%) 0.005
M7 39 (5.5%) 1 (2.0%) 38 (5.7%) 0.351
Risk group: n (%) <0.001
Low risk 328 (39.0%) 15 (27.8%) 313 (39.8%) 0.079
Standard risk 391 (46.5%) 17 (31.5%) 374 (47.6%) 0.022
High risk 121 (14.4%) 22 (40.7%) 99 (12.6%) <0.001
FLT3/ITD <0.001
Positive, n (%) 147 (16.9%) 28 (48.3%) 119 (14.7%)
Negative, n (%) 722(83.1%) 30 (51.7%) 692 (85.3%)
FLT3/ITD allelic ratio,
Median (range)
0.54 0.55 0.54 0.865
(0.03-9.50) (0.03-5.19) (0.03-9.50)
NPM1 0.794
Positive, n (%) 66(7.6%) 3(5.3%) 63(7.8%)
Negative, n (%) 802(92.4%) 63(94.7%) 748(92.2%)
CEBPA 0.245
Positive, n (%) 49(5.7%) 1(1.7%) 48(5.9%)
Negative, n (%) 817(94.3%) 57(98.3) 760(94.1%)
Cytogenetic status
Normal (n, %) 196(23.7%) 23(44.2%) 173(22.3%) <0.001
Abnormal (n, %) 631 (76.4%) 29 (55.8%) 602 (77.7%) 0.317
inv(16)(n, %) 106(12.8%) 9(17.3%) 97(12.5%) 0.046
t(8;21) (n, %) 128(15.5%) 3(5.8%) 125(16.1%)
HSCT in 1st CR 0.906
No (n, %) 663 (83.8%) 38 (84.4%) 625 (83.8%)
Yes (n, %) 128 (16.2%) 7 (15.6%) 121 (16.2%)
Protocol 0.058
AAML03P1 (n, %) 91 (10.5%) 7 (12.1%) 84 (10.3%) 0.679
AAML0531 (n, %) 732 (84.1%) 44 (75.9%) 688 (84.7%) 0.074
CCG-2961 (n, %) 47(5.4%) 7 (12.1%) 40 (4.9%) 0.031
CR status at end of course 1 0.002
CR, n (%) 656 (76.3%) 35 (60.3%) 621 (77.4%) 0.003
Not CR, n (%) 189 (22.0%) 20 (34.5%) 169 (21.1%) 0.017
Death, n (%) 15 (1.7%) 3 (5.2%) 12 (1.5%) 0.074
CR status at end of course 2 <0.001
CR, n (%) 736 (87.2%) 38 (69.1%) 698 (88.5%) <0.001
Not CR, n (%) 88 (10.4%) 14 (25.5%) 74 (9.4%) <0.001
Death, n (%) 20 (2.4%) 3 (5.5%) 17 (2.2%) 0.136

CEBPA CCAAT, enhancer binding protein alpha; CR, complete remission; FAB, French–American–British morphology classification; FLT3/ITD, internal tandem duplication of the FLT3 gene; HSCT, hematopoietic stem cell transplantation; NPM1, Nucleophosmin; WBC, white blood cell count.