Abstract
Purpose
The purpose of this study is to evaluate the association between variants in prostaglandin-endoperoxide synthase 1 (PTGS1), prostaglandin F (2α) receptor (PTGFR), and multidrug resistance protein 4 (MRP4) genes and intraocular pressure (IOP) response to latanoprost in Chinese patients with primary open-angle glaucoma (POAG).
Methods
The IOP response to latanoprost was evaluated by percent IOP reduction (%ΔIOP) in the treated eye with the formula %ΔIOP = (Baseline IOP values − IOP values posttreatment) / Baseline IOP values × 100 %. Polymorphisms in PTGS1 (rs3842787 and rs10306114), PTGFR (rs3753380 and rs3766355), and MRP4 (rs11568658 and rs11568668) genes were detected by direct DNA sequencing. The differences among %ΔIOP of genotypes or haplotypes were obtained by use of the Mann–Whitney U test. Association analyses were performed by multiple linear regression analysis.
Results
Latanoprost were prescribed to 63 subjects, 60 of which met the inclusion/exclusion criteria for the current study. Notably, the %ΔIOP in the rs11568658 GT heterozygous genotype was 10.4 %ΔIOP lower than that of GG homozygous wild-type on day 7 (15.7 ± 2.52 vs. 26.1 ± 2.88, P = 0.003), and the corresponding results in the rs10306114 AG heterozygous genotype and AT haplotype constructed by rs3753380 and rs3766355 on day 7 were 7.2 and 10.3 %ΔIOP (P < 0.05). Interestingly, similar results were also observed on day 30 (P = 0.008, P = 0.006, and P = 0.002, respectively). Multiple regression analysis showed that heterozygous genotypes of rs10306114, rs11568658, and carrier of AT haplotype were significantly correlated with the lower %ΔIOP. On day 30, the above variations explained 9.9, 10.7, and 17.7 % of the total variability of %ΔIOP in the Chinese POAG patients, respectively.
Conclusion
rs10306114, rs3753380, rs3766355, and rs11568658 single-nucleotide polymorphisms (SNPs) correlate with a response to latanoprost treatment in patients with POAG. These SNPs may be important determinants of variability in response to latanoprost.
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Acknowledgments
We would like to take this opportunity to thank Prof. Howard L. McLeod of the Institute of Pharmacogenomics and Individualized Therapy, University of North Carolina at Chapel Hill, North Carolina, for his important comments and Prof. Xiao-ping Chen, Prof. Dong-sheng Ouyang, and Dr. He-bin Xie for their excellent technical support on our paper.
This work was supported by the Grant from the Science and Technology Agency of Hunan Province (2014SK3272, 2014SS2033, and 2014TT2021) and the Grant from the Changsha Municipal Science and Technology Bureau (K13ZD075-33).
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Gao LC and Wang D contributed equally to the work.
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Gao, Lc., Wang, D., Liu, Fq. et al. Influence of PTGS1, PTGFR, and MRP4 genetic variants on intraocular pressure response to latanoprost in Chinese primary open-angle glaucoma patients. Eur J Clin Pharmacol 71, 43–50 (2015). https://doi.org/10.1007/s00228-014-1769-8
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DOI: https://doi.org/10.1007/s00228-014-1769-8