Methylenetetrahydrofolate Reductase C677T polymorphism and breast cancer risk in Moroccan women|
Diakite, B.; Tazzite, A.; Hamzi, K.; Jouhadi, H. & Nadifi, S.
Background: Methylenetetrahydrofolate (MTHFR) enzyme plays an important role in folate metabolism which is involved
in DNA methylation, repair, and synthesis.
Objective: We investigated if the MTHFR C677T polymorphism modulates the risk of developing breast cancer in
Methods: Genotyping was performed by PCR-RFLP method on a sample of 96 patients with breast cancer and 117
Results: A positive correlation was found between the MTHFR C677T polymorphism and progesterone receptors expression
(p= 0.04). According to menopausal status, the heterozygous CT (OR = 2.29 and P = 0.03) was statistically significant in
pre-menopausal women. There was a significant association between C677T polymorphism and breast cancer risk in both
additive (OR = 2.2, 95% CI = 1.24-3.86, p = 0.007) and dominant (OR = 2.10, CI 95% = 1.21-3.64, p = 0.008) models. In
addition, the T allele were associated with a high breast cancer risk (OR = 1.59, 95% CI = 1.04-2.44, p = 0.03).
Conclusion: In the light of our preliminary study, 677T allele and 677CT MTHFR genotype may represent a genetic
determinant increasing breast cancer risk in Moroccan women. A larger study including a larger sample size and more
information is needed to confirm our conclusions.
MTHFR polymorphism, breast neoplasm, Morocco.