Prospective analysis of TEL gene rearrangements in childhood acute lymphoblastic leukemia: a Children's Oncology Group study.
PURPOSE: To prospectively determine the prognostic significance of the TEL-AML1 fusion in children with acute lymphoblastic leukemia (ALL). PATIENTS AND METHODS: TEL gene status was determined for 926 patients with B-precursor ALL enrolled on the Pediatric Oncology Group ALinC 16 trials and patients were observed for a median time of 8 years. RESULTS: Rearrangements of the TEL gene were detected in 244 patients (26%). The estimated 5-year event-free survival rate (+/- SE) for patients with TEL rearrangements was 86% +/- 2%, compared with 72% +/- 2% for those with germline TEL (P < .0001). TEL rearrangements were associated with a superior outcome among patients with standard-risk ALL, high-risk ALL, and rapid early responses to therapy. In a multivariate analysis that included risk group, sex, and day 15 marrow status, TEL status was an independent predictor of outcome (P = .0002). CONCLUSION: We conclude that TEL gene status should be incorporated into risk classification schemes and suggest that patients who have standard-risk features, the TEL-AML1 fusion, and rapid early responses to therapy, should be treated with antimetabolite-based therapy designed to maintain their high cure rates and avoid late effects.
Duke Scholars
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- United States
- Treatment Outcome
- Time Factors
- Survival Rate
- Sex Factors
- Risk Assessment
- Prospective Studies
- Proportional Hazards Models
- Prognosis
- Precursor B-Cell Lymphoblastic Leukemia-Lymphoma
Citation
Published In
DOI
EISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- United States
- Treatment Outcome
- Time Factors
- Survival Rate
- Sex Factors
- Risk Assessment
- Prospective Studies
- Proportional Hazards Models
- Prognosis
- Precursor B-Cell Lymphoblastic Leukemia-Lymphoma