# The value of minimal residual disease and IKZF1 deletion for predicting prognosis in adult patients with B-cell acute lymphoblastic leukemia

**Authors:** 诗雨 邓, 家旺 区, 子聪 黄, 俊杰 陈, 梓红 蔡, 启发 刘, 红升 周

PMC · DOI: 10.3760/cma.j.cn121090-20231002-00157 · Chinese Journal of Hematology · 2024-03-01

## TL;DR

This study shows that combining minimal residual disease and IKZF1 gene deletion can better predict outcomes in adult B-cell acute lymphoblastic leukemia patients.

## Contribution

A novel prognostic system combining MRD and IKZF1 deletion is proposed for adult B-ALL patients.

## Key findings

- MRD positivity at day 45 is independently linked to higher relapse risk.
- IKZF1 deletion is independently associated with increased mortality risk.
- High-risk patients (MRD+ or IKZF1 deletion) had significantly worse survival and relapse rates.

## Abstract

评估微小残留病（MRD）和IKZF1基因缺失在接受儿童特点化疗方案的成人急性B淋巴细胞白血病 (B-ALL) 中的预后价值。

回顾性分析2016年1月至2020年9月南方医科大学南方医院收治的149例成人B-ALL患者的预后情况。采用Cox回归模型进行预后因素分析。

149例患者完全缓解（CR）率为93.2％，5年总生存（OS）率和累积复发率（CIR）分别为（54.3±5.0）％和（47.5±5.2）％。Cox回归分析发现诱导治疗后第45天的微小残留病（MRD3）阳性与患者复发风险独立相关（HR＝2.535，95％CI 1.122～5.728，P＝0.025），IKZF1基因缺失与患者的死亡风险独立相关（HR＝1.869，95％CI 1.034～3.379，P＝0.039）。基于MRD3和IKZF1基因状态，我们将149例成人B-ALL患者分为高危组［MRD3阳性和（或）IKZF1基因缺失］和低危组（MRD3阴性且IKZF1基因野生型）。两组的5年OS率分别为（45.5±6.0）％和（69.4±8.6）％（P<0.001），5年CIR分别为（61.6±8.3）％和（25.5±6.5）％（P<0.001），差异均有统计学意义。多因素分析表明，高危组是影响OS（HR＝3.937，95％CI 1.975～7.850，P<0.001）以及CIR（HR＝4.037，95％CI 2.095～7.778，P<0.001）的独立危险因素。

MRD结合IKZF1的预后分层系统可更有效地预测成人B-ALL患者的临床结局，有助于指导患者治疗方案的选择。

## Linked entities

- **Genes:** IKZF1 (IKAROS family zinc finger 1) [NCBI Gene 10320]
- **Diseases:** B-cell acute lymphoblastic leukemia (MONDO:0004947)

## Full-text entities

- **Genes:** IKZF1 (IKAROS family zinc finger 1) [NCBI Gene 10320] {aka CVID13, Hs.54452, IK1, IKAROS, LYF1, LyF-1}
- **Diseases:** ALL (MESH:D054198), B-ALL (MESH:D015456), minimal residual disease (MESH:D018365)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## References

29 references — full list in the complete paper: https://tomesphere.com/paper/PMC11078655/full.md

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Source: https://tomesphere.com/paper/PMC11078655