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Abstract - Association between A1298C and C677T methylenetetrahydrofolate reductase gene polymorphisms and the risk of acute lymphoid and myeloid leukemia
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Yousef Mortazavi, Zahra Ghasemi, Sanaz Aghajani, Mohammad Eftekhari Shirkohy, Minoosh Moghimi, Alireza Khademolmelleh, Saeideh Mazloomzadeh

ABSTRACT

Background: Methylenetetrahydrofolate reductase (MTHFR) is a key enzyme involved in folate metabolism, DNA methylation and synthesis. Two MTHFR polymorphisms, C677T and A1298C, have been associated with reduced enzyme activity. Rapidly replicating cell types, such as hematopoietic cells, may be especially sensitive to changes in the availability of intracellular folate. The aim of this case-control study was to evaluate whether  the  mentioned polymorphisms in MTHFR gene plays a role in altering susceptibility to acute myeloid leukemia and acute lymphoblastic leukemia.

Material and methods: 281 patients comprising 101 patients with acute lymphoblastic leukemia and 180 patients with acute myeloid leukemia as well as 490 normal individuals as control group were studied for the C677T and the A1298C MTHFR gene polymorphisms using PCR. The PCR products were digested with HinfI and Mbo‌‌‌‌‌II restriction enzymes respectively (RFLP). The results were electrophoresed on agaros gel and analyzed using SPSS software.

Results: The number of patients with acute lymphoblastic leukemia who had C677T polymorphism was less than the control group, but this difference was not significant. Also, combination of C677T/A1298C genotypes in both case and control groups, showed no increase of susceptibility to acute myeloid leukemia and/or acute lymphoblastic leukemia risk. There was no significant relationship between common MTHFR variants and the risk of acute myeloid leukemia and acute lymphoblastic leukemia in controls and the cases.

Conclusion: Our findings showed that the MTHFR C677T and A1298C gene variants do not have a major influence on the susceptibility to acute lymphoblastic leukemia and acute myeloid leukemia in Iranian individuals. However, the C677T polymorphism has a protection role in acute lymphoblastic leukemia group, but this difference was not statistically significant.

Key words: MTHFR, polymorphism, acute lymphoblastic leukemia, acute myeloid leukemia, PCR/RFLP

Corresponding author: Dr. Yousef Mortazavi, Department of Pathology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran. Post code: 45139 56111. Tel: +98 912 389 2427. E-mail: youmort@yahoo.com

 

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Volume 4, Number 58 (2020)