Association of FOXE3-p.Ala170Ala and PITX3-p.Ile95Ile polymorphisms with congenital cataract and microphthalmia
Message:
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Purpose
To investigate the association of FOXE3-p.Ala170Ala (rs34082359) and PITX3-p.Ile95Ile (rs2281983) polymorphisms with congenital cataract and microphthalmia in a western Indian population.
Methods
FOXE3-p.Ala170Ala (c.510C>T) and PITX3-p.Ile95Ile (c.285C>T) polymorphisms were genotyped in 561 subjects consisting of 242 cases with congenital cataract, 52 with microphthalmia, and 267 controls using polymerase chain reaction-restriction fragment length polymorphism. Approximately 10% of samples were randomly sequenced for each single nucleotide polymorphism to confirm the genotypes. The prediction of mRNA secondary structure for polymorphism FOXE3-p.Ala170Ala and PITX3-p.Ile95Ile was performed.
Results
A significantly high frequency of T allele and a borderline significance in the frequency of TT genotype of FOXE3-p.Ala170Ala was observed in microphthalmia cases, as compared to controls [T allele: OR: [CI] = 1.8 [1.15-2.72], P = 0.0115; TT: OR [CI] = 2.9 [1.14-7.16], P = 0.0291). The frequency of CC genotype was significantly low in microphthalmia cases when compared to controls (CC: OR [CI] = 0.5 [0.24-0.86, P = 0.0150). There was no significant difference in the allele and genotype frequencies of PITX3-p.Ile95Ile between cases and controls. A slight free energy change was observed in the secondary structure of mRNA between the FOXE3-p.Ala170Ala C-allele (-917.60 kcal/mol) and T-allele (-916.80 kcal/mol) and between PITX3-p.Ile95Ile C-allele (-659.80 kcal/mol) and T-allele (-658.40 kcal/mol).
Conclusion
The present findings indicate that FOXE3-p.Ala170Ala 'T' allele and 'TT' genotype could be predisposing factors for microphthalmia while 'CC' genotype might play a protective role against it. A reduction in the free energy change associated with FOXE3-p.Ala170Ala 'T' allele could further contribute towards disease risk.
Language:
English
Published:
Journal of Ophthalmic and Vision Research, Volume:13 Issue: 4, Oct-Dec 2018
Pages:
397 to 402
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