Abstract
Objective
The aim of this study was to investigate whether the thymidylate synthase (TYMS) 2R/3R and 6 bp I/D polymorphisms can predict the response to or toxicity of methotrexate (MTX) in patients with rheumatoid arthritis (RA).
Methods
We conducted a meta-analysis of studies on the association between the TYMS 2R/3R and 6 bp I/D polymorphisms and non-responsiveness to or toxicity of MTX in RA patients.
Results
A total of 11 studies involving 1613 patients were considered. Meta-analysis showed no association between the TYMS 2R/3R 3R allele and non-responsiveness to MTX therapy (odds ratio [OR] = 1.087, confidence interval [CI] = 0.682–1.731, p = 0.726). The meta-analysis indicated that there was no association between the TYMS 6 bp I/D D allele and non-responsiveness to MTX therapy (OR = 0.688, 95% CI = 0.281–1.683, p = 0.413). Meta-analysis revealed that the TYMS 2R/3R polymorphism was not associated with MTX toxicity, except for in a co-dominant model, and the TYMS 6 bp I/D polymorphism was not associated with MTX toxicity in all genetic models.
Conclusions
This meta-analysis demonstrates that the TYMS 2R/3R and 6 bp I/D polymorphisms may not be associated with non-responsiveness to or toxicity of MTX therapy in RA patients.
Zusammenfassung
Ziel
Ziel der vorliegenden Studie war es zu untersuchen, ob sich anhand von Thymidylatsynthase(TYMS)-2R/3R- und TYMS-6bp-I/D-Polymorphismen die Reaktion auf oder die Toxizität von Methotrexat (MTX) bei Patienten mit rheumatoider Arthritis (RA) vorhersagen lassen.
Methoden
Die Autoren erhoben eine Metaanalyse von Studien zur Assoziation zwischen TYMS-2R/3R- und TYMS-6bp-I/D-Polymorphismen und dem Nichtansprechen auf oder der Toxizität von MTX bei Patienten mit RA.
Ergebnisse
Insgesamt wurden 11 Studien mit 1613 Patienten ausgewertet. Die Metaanalyse ergab keine Assoziation zwischen dem TYMS-2R/3R-3R-Allel und dem Nichtansprechen auf eine MTX-Therapie (Odds Ratio [OR] = 1,087; 95% Konfidenzintervall [KI] = 0,682–1,731; p = 0,726). Anhand der Metaanalyse zeigte sich ebenfalls, dass keine Assoziation zwischen dem TYMS-6-bp-I/D-D-Allel und dem Nichtansprechen auf eine MTX-Therapie vorlag (OR = 0,688; 95%-KI = 0,281–1,683; p = 0,413). Außerdem ergab sich aus der Metaanalyse, dass der TYMS-2R/3R-Polymorphismus nicht mit der MTX-Toxizität assoziiert war – außer in einem kodominanten Modell – und dass auch der TYMS-6-bp-I/D-Polymorphismus in sämtlichen genetischen Modellen nicht mit der MTX-Toxizität assoziiert war.
Schlussfolgerung
Die vorliegende Metaanalyse zeigt, dass der TYMS-2R/3R- und -6bp-I/D-Polymorphismus möglicherweise mit dem Nichtansprechen auf oder der Toxizität von MTX als Therapie bei RA-Patienten assoziiert sind.
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Acknowledgements
This study was supported in part by a grant of the Korea Healthcare technology R&D Project, Ministry for Health and Welfare, Republic of Korea (HI15C2958).
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S.-C. Bae and Y.H. Lee declare that they have no competing interests.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.
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U. Müller-Ladner, Bad Nauheim
U. Lange, Bad Nauheim
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Bae, SC., Lee, Y.H. TYMS polymorphisms and responsiveness to or toxicity of methotrexate in rheumatoid arthritis. Z Rheumatol 77, 824–832 (2018). https://doi.org/10.1007/s00393-018-0419-4
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DOI: https://doi.org/10.1007/s00393-018-0419-4