MTHFR and MTHFD1 gene polymorphisms are not associated with pseudoexfoliation syndrome in South Indian population

Int Ophthalmol. 2018 Apr;38(2):599-606. doi: 10.1007/s10792-017-0498-2. Epub 2017 Mar 15.

Abstract

Purpose: Pseudoexfoliation syndrome (PEX) is a late onset disorder of extracellular matrix turnover, associated systemically with cardiovascular and cerebrovascular disease. To evaluate the suggested association of polymorphisms of homocysteine metabolism genes MTHFR (rs1801131, rs1801133) and MTHFD1 (rs8006686) with PEX.

Methods: A case-control association study was undertaken, comprising a total of 1472 individuals including 860 unrelated PEX cases and 612 ethnic-matched cataract controls (CC). All the study subjects were genotyped for three SNPs using the TaqMan allelic discrimination assay. Association and statistical analysis were performed with PLINK 1.07 and STATA 11.1.

Results: Among the three SNPs genotyped, MTHFR polymorphisms did not exhibit significant association with PEX (rs1801131; p = 0.549, rs1801133; p = 0.408). The intronic SNP rs8006686 showed nearly significant association (p = 0.069), and however did not remain significant after Bonferroni correction.

Conclusion: Our study suggests no significant genetic association of MTHFR (rs1801131, rs1801133) and MTHFD1 (rs8006686) polymorphisms in South Indian PEX patients.

Keywords: Homocysteine; MTHFD1; MTHFR; PEX; Polymorphisms.

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Aminohydrolases
  • Asian People / genetics
  • Case-Control Studies
  • Exfoliation Syndrome / genetics*
  • Female
  • Formate-Tetrahydrofolate Ligase
  • Genetic Association Studies
  • Genetic Predisposition to Disease*
  • Humans
  • Male
  • Methylenetetrahydrofolate Dehydrogenase (NADP) / genetics*
  • Methylenetetrahydrofolate Reductase (NADPH2) / genetics*
  • Middle Aged
  • Minor Histocompatibility Antigens / genetics*
  • Multienzyme Complexes
  • Polymorphism, Single Nucleotide*

Substances

  • Minor Histocompatibility Antigens
  • Multienzyme Complexes
  • formyl-methenyl-methylenetetrahydrofolate synthetase
  • MTHFR protein, human
  • Methylenetetrahydrofolate Reductase (NADPH2)
  • MTHFD1 protein, human
  • Methylenetetrahydrofolate Dehydrogenase (NADP)
  • Aminohydrolases
  • Formate-Tetrahydrofolate Ligase