2.
IKZF1基因亚型对B-ALL患儿复发的影响 [例（%）]
| 组别 | n | 复发 |
| IKZF1功能亚型 | 130 | 11(8) |
| IKZF1功能缺失亚型 | 22 | 15(68) |
| χ2值 | 47.3 | |
| P值 | < 0.001 |
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