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[Clinical Prognostic Factors Analysis of Initially Treated AML Children with t(8;21)/RUNX1-RUNX1T1]

Guang-Lai Fan1, Peng-Jun Jiang2, Min Yuan3

  • 1Department of Blood Transfusion, Huaian Maternal and Child Health Hospital, Huaian 223002, Jiangsu Province, China,E-mail: fanguanglai@126.com.

Zhongguo Shi Yan Xue Ye Xue Za Zhi
|October 17, 2020
PubMed

Insights

Clinical factors influence outcomes for children with t(8;21)/RUNX1-RUNX1T1 positive acute myeloid leukemia (AML). RUNX1-RUNX1T1 gene expression levels are critical for predicting recurrence and survival in these young patients.

Area of Science:

  • Pediatric Oncology
  • Hematologic Malignancies
  • Molecular Genetics

Background:

  • Acute myeloid leukemia (AML) with the t(8;21) translocation, resulting in the RUNX1-RUNX1T1 fusion gene, represents a distinct subtype.
  • Understanding prognostic factors is crucial for optimizing treatment strategies in pediatric AML.

Purpose of the Study:

  • To identify clinical prognostic factors in initially-treated pediatric patients with AML harboring the t(8;21)/RUNX1-RUNX1T1 fusion.
  • To evaluate the impact of gene expression levels on patient outcomes.

Main Methods:

  • Retrospective analysis of clinical data from 41 pediatric AML patients with t(8;21)/RUNX1-RUNX1T1.
  • Assessment of complete remission rates, event-free survival (EFS), and overall survival (OS).
  • Statistical evaluation using chi-squared tests and Cox regression models to determine influencing factors.

Main Results:

  • High complete remission rates (82.93% after first, 97.56% after second induction).
  • Median EFS of 30 months and OS of 31 months.
  • Factors influencing prognosis included achieving CR after the first course, male sex, age < 10 years, and RUNX1-RUNX1T1 gene expression levels post-chemotherapy.

Conclusions:

  • Pediatric AML patients with t(8;21)/RUNX1-RUNX1T1 generally have a favorable prognosis with standard chemotherapy.
  • RUNX1-RUNX1T1 gene expression levels are closely associated with recurrence risk and long-term survival.
  • Decreased RUNX1-RUNX1T1 expression (< 3 log) post-induction is an independent risk factor for EFS and OS.
Abstract

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