Background: Methotrexate (MTX) is the most used drug for the treatment of rheumatoid arthritis (RA) although outcome differs among patients.
Aim: To evaluate whether polymorphisms in pharmacokinetic genes are associated with outcome in RA patients receiving MTX.
Patients & Methods: We analyzed 28 SNPs in SLC19A1/RFC1, ABCB1, FPGS and GGH genes.
Results: We studied 194 RA patients receiving MTX monotherapy. Two FPGS SNPs, rs10987742 and rs10106, were associated with response (p = 0.033 and p = 0.041, respectively). The FPGS rs10106 variant was also associated with MTX survival (p = 0.005) and toxicity (p = 0.021). Three ABCB1 SNPs, rs868755, rs10280623 and rs1858923, were associated with toxicity (p = 0.025, p = 0.048 and p = 0.031, respectively).
Conclusion: FPGS and ABCB1 genetic variants can influence the outcome in RA patients receiving MTX monotherapy.
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| http://dx.doi.org/10.2217/pgs.15.150 | DOI Listing |
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