Associations of polymorphisms of glutathione-S-transferase and N-acetyltransferase 2 genes in children with acute lymphoblastic leukemia

   The development of personalized medicine is inextricably linked with the study of the patient’s genetic profile, which determines not only the features of the course of the disease, but also the risks of its occurrence.

   Purpose. The aim of the work was to study possible associations between the genetic polymorphisms GSTT1, GSTM1, NAT2 and predisposition to the development of acute lymphoblastic leukemia in children of the East Siberian region.

   Material and methods. A total of 82 children with acute lymphoblastic leukemia and 227 healthy volunteers with no history of hematological pathology were examined. Deletion polymorphisms in the glutathione S-transferase GSTT1 and GSTM1 genes were detected by polymerase chain reaction (PCR) with electrophoretic detection of amplification products in agarose gel; the type of acetylation was determined by genotyping SNP rs1495741 of the NAT2 gene by conducting a polymerase chain reaction in real time. The material for the study was DNA samples isolated from buccal epithelium samples.

   Results. Statistical processing allowed us to draw the following conclusions: the rate of acetylation of xenobiotics does not affect the risk of acute lymphoblastic leukemia in children of the Caucasian ethnic group of the East Siberian region.

   Conclusion. There is no associative relationship between deletions in the GSTM1 and GSTT1 genes and the risk of developing acute lymphoblastic leukemia in children of the Caucasian ethnic group of the East Siberian region. It was found that the risk of developing acute lymphoblastic leukemia in children was significantly higher with the variant of combinations of alleles of the rapid type of NAT2 acetylation and normal activity of GSST1 and GSTM1 (G/G, active, active).

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