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Acute Lymphoblastic Leukemia ( All )

Decent Essays

Acute lymphoblastic leukemia (ALL), a malignant disorder of lymphoid progenitor cells, is the most common hematological malignancy affects children, accounting for 25–30% of all childhood cancers with peak prevalence between the ages of 2 and 5 years [1]. The causes of pediatric acute leukemias are still not well known, the identification of causes and prevention/early intervention is clearly a worthwhile goal [2]. Previous studies have demonstrated that the interaction between genetic background, lifestyle, and these environmental factors play a critical role in the development of ALL in children [3]. MicroRNAs are a class of small (17–25 nucleotides) single-stranded noncoding RNAs that function as a sequence-targeted modifiers of gene expression through translational repression [4]. The miRNAs are important key regulators of normal hematopoiesis and their disruption could lead to leukemogenesis [5]. Mutations like single-nucleotide polymorphisms located in microRNA binding sites can cause disruption in microRNA-target interactions, leading to deregulation of the target gene expression [6]. One of these SNPs is the one found within the miR-502 binding site in the 3′-UTR of the SET8 gene. SET8 (also known as PR-SET7; located on chromosome 12q24.31) encodes a histone H4–Lys-20–specific methyltransferase which plays an important role in cell cycle–dependent transcriptional silencing and mitotic regulation [7]. There are about 129 variants of the SET8 gene

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