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Polymorphism in Organic Anion-Transporting Polypeptide Gene Related to Methotrexate Response in Rheumatoid Arthritis Treatment
- Source :
- Journal of Nippon Medical School. 86:149-158
- Publication Year :
- 2019
- Publisher :
- Medical Association of Nippon Medical School, 2019.
-
Abstract
- BACKGROUND Methotrexate (MTX) is still the first-choice drug for the treatment of rheumatoid arthritis (RA). In Japan, MTX doses of up to 16 mg/week were approved in 2011. In this study, we aimed to identify the gene polymorphisms that can predict therapeutic effects of MTX in Japanese patients in current clinical settings. METHODS This study involved 171 patients with RA (all Japanese nationals, age 63.5±10.0 years) who had been administered MTX. The analyzed polymorphisms included 82 single nucleotide polymorphisms (SNPs) involved in the MTX pharmacological pathway or in the pathogenesis of RA. Responders were patients who showed high sustained remission or low disease activity with MTX or conventional disease-modifying anti-rheumatic drugs (DMARDs) treatment beyond 6 months. Non-responders were patients who showed moderate or high disease activity, who were prescribed biological DMARDs. A logistic model was constructed with Responder/Non-responder as the target variable, and minor allele frequency was set as an explanatory variable. RESULTS None of the 82 SNPs targeted for analysis met the Bonferroni significance threshold of 6.098×10-4. However, we identified SLCO1B1 rs11045879 as an SNP that might yield significant results if the number of patients were to be increased (P=0.015). CONCLUSIONS The rs11045879 minor allele in the SLCO1B1 gene is a potential predictor of non-responders to MTX treatment among Japanese RA patients. In future collaborative research, we will investigate whether the association with SLCO1B1 polymorphism is significant by performing statistical analysis with a larger study population.
- Subjects :
- Male
musculoskeletal diseases
Oncology
medicine.medical_specialty
Organic Anion Transporters
Single-nucleotide polymorphism
Polymorphism, Single Nucleotide
Arthritis, Rheumatoid
03 medical and health sciences
0302 clinical medicine
Asian People
Internal medicine
medicine
Humans
SNP
skin and connective tissue diseases
Alleles
Genetic Association Studies
Aged
biology
Liver-Specific Organic Anion Transporter 1
business.industry
Therapeutic effect
General Medicine
Middle Aged
medicine.disease
Minor allele frequency
Logistic Models
Methotrexate
Treatment Outcome
Antirheumatic Agents
030220 oncology & carcinogenesis
Rheumatoid arthritis
biology.protein
Population study
Female
030211 gastroenterology & hepatology
SLCO1B1
business
medicine.drug
Subjects
Details
- ISSN :
- 13473409 and 13454676
- Volume :
- 86
- Database :
- OpenAIRE
- Journal :
- Journal of Nippon Medical School
- Accession number :
- edsair.doi.dedup.....3fef26fefd51094129e6ab6c75a705b6