Impact of Methionine Synthase Reductase Polymorphisms in Chronic Myeloid Leukemia Patients

Abstract: Introduction: Metabolism methionine and of folate play a vital function in cellular methylation
reactions, DNA synthesis and epigenetic process.However, polymorphisms of methionine
have received much attention in recent medical genetics research. Objectives: To ascertain whether
the common polymorphisms of the MTRR (Methionine Synthase Reductase) A66G gene could
play a role in affecting susceptibility to Chronic Myeloid Leukemia (CML) in Sudanese individuals.
Methods: In a case-controlled study, we extracted and analyzed DNA from 200 CML patients and
100 healthy control subjects by the PCR-RFLP method. Results: We found no significant difference
in age orgender between the patient group and controls. The MTRR A66G genotypes were
distributed based on the Hardy-Weinberg equilibrium (p > 0.05). The variation of MTRR A66G
was less significantly frequent in cases with CML (68.35%) than in controls (87%) (OR = 0.146,
95% CI = 0.162–0.662, p < 0.002). Additionally, AG and GG genotypes and G allele were reducing the
CML risk (Odds ratio [OR] = 0.365; 95% CI [0.179–0.746]; p = 0.006; OR = 0.292; 95% CI [0.145–0.590];
p = 0.001 and OR = 0.146; 95% CI [0.162–0.662]; p = 0.002 and OR = 2.0; 95% CI [1.3853–2.817]; respectively,
(p = 0.000)). Conclusions: Our data demonstrated that heterozygous and homozygous mutant
genotypes of MTRR polymorphisms were associated with decreased risk of developing CML in the
Sudanese population.