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Iranian Journal of Pediatrics
Tehran University of Medical Sciences Press
ISSN: 1018-4406
EISSN: 2008-2150
Vol. 23, No. 6, 2013, pp. 681-686
Bioline Code: pe13144
Full paper language: English
Document type: Research Article
Document available free of charge

Iranian Journal of Pediatrics, Vol. 23, No. 6, 2013, pp. 681-686

 en Prevalence of ETV6/RUNX1 Fusion Gene in Pediatric Patients with Acute Lymphoblastic Leukemia in Iran
Rahnemoon, Ahmad-Reza; Zaker, Farhad; Izadyar, Mina; Ansari, Shahla; Poopak, Behzad & Tadavosyan, Yuri

Abstract

Objective: ETV6/RUNX1 (also known as TEL/AML1) is the most frequent gene fusion in childhood acute lymphoblastic leukemia (ALL). Sixty-three patients were enrolled in this study to explore the distribution of this gene in Iranian population.
Methods:This study used 63 peripheral blood and bone marrow (PB/BM) samples from children with ALL. Immunophenotyping of PB and BM samples were performed using flow cytometry to illustrate the lineage. Moreover, reverse transcriptase polymerase chain reaction (RT-PCR) technique was used to amplify transcripts of leukemia-specific chromosome fusion gene ETV6/RUNX1 and to monitor the expression levels of the ETV6/RUNX1 in patients according to Van Dongen et al protocol.
Findings: On the basis of French-American-British (FAB) classification, 47 individuals had ALL-L1. The incidence of ETV6/RUNX1 fusion gene in this study was 34.9%. The laboratory and clinical features of twenty two ETV6/RUNX1 positive ALL cases were similar to those of other studies. The most positive cases of ETV6/RUNX1 fusion gene had the early pre B ALL and pre B ALL immunophenotypes.
Conclusion: The ETV6/RUNX1 fusion gene is a common genetic anomaly in Iranian childhood ALL patients and the prevalence of the ETV6/RUNX1 fusion gene is similar to that of ALL patients in other countries. However early pre B cells were the most common type in studied patients.

Keywords
Acute Lymphoblastic Leukemia; Reverse Transcriptase; ETV6/RUNX1 Fusion; Polymerase Chain Reaction

 
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