 ETV6/RUNX1 (also known as TEL/AML1) is the most frequent gene fusion in childhood acute lymphoblastic leukemia (ALL).     ///    "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. "    ///    Prevalence of ETV6/RUNX1 Fusion Gene in Pediatric Patients with Acute Lymphoblastic Leukemia in Iran..     ///    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.     ///    The incidence of ETV6/RUNX1 fusion gene in this study was 34.9%.     ///    The most positive cases of ETV6/RUNX1 fusion gene had the early pre B ALL and pre B ALL immunophenotypes.     ///    The laboratory and clinical features of twenty two ETV6/RUNX1 positive ALL cases were similar to those of other studies. 