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Association of SLCO1B1 *14 Allele with Poor Response to Methotrexate in Juvenile Idiopathic Arthritis Patients
OBJECTIVE: Variants in the SLCO1B1 gene, encoding a hepatic methotrexate (MTX) transporter, affect clearance of high‐dose MTX. We tested whether in the *14 and *15 alleles of SLCO1B1 influenced the response to low‐dose MTX in juvenile idiopathic arthritis (JIA) patients. METHODS: The study included...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6858017/ https://www.ncbi.nlm.nih.gov/pubmed/31777781 http://dx.doi.org/10.1002/acr2.1008 |
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author | Ramsey, Laura B. Moncrieffe, Halima Smith, Chelsey N. Sudman, Marc Marion, Miranda C. Langefeld, Carl D. Becker, Mara L. Thompson, Susan D. |
author_facet | Ramsey, Laura B. Moncrieffe, Halima Smith, Chelsey N. Sudman, Marc Marion, Miranda C. Langefeld, Carl D. Becker, Mara L. Thompson, Susan D. |
author_sort | Ramsey, Laura B. |
collection | PubMed |
description | OBJECTIVE: Variants in the SLCO1B1 gene, encoding a hepatic methotrexate (MTX) transporter, affect clearance of high‐dose MTX. We tested whether in the *14 and *15 alleles of SLCO1B1 influenced the response to low‐dose MTX in juvenile idiopathic arthritis (JIA) patients. METHODS: The study included 310 JIA patients genotyped for three single nucleotide polymorphisms (SNPs) in SLCO1B1 (rs4149056, rs2306283, and rs11045819). A patient's SLCO1B1 diplotype was determined by combining the SNPs into the *1a, *1b, *4, *5, *14, and *15 alleles. Number of active joints at follow‐up (visit closest to 6 months of treatment and prior to starting a tumor necrosis factor inhibitor) was used as the dependent variable in a negative binomial regression model that included active joint count at baseline as a covariate. RESULTS: The SLCO1B1*14 allele was associated with less response to MTX (P = 0.024) and the *15 allele was not associated with response to MTX (P = 0.392). CONCLUSION: SLCO1B1 alleles may be associated with poor response to MTX in JIA patients. The *14 allele has been associated with fast clearance (low exposure) after high‐dose MTX in patients with leukemia. Thus, the SLCO1B1 gene may be informative for precision dosing of MTX in JIA patients. Patients carrying the *14 allele may require a higher dose than noncarriers to achieve a similar response to MTX. |
format | Online Article Text |
id | pubmed-6858017 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-68580172019-11-27 Association of SLCO1B1 *14 Allele with Poor Response to Methotrexate in Juvenile Idiopathic Arthritis Patients Ramsey, Laura B. Moncrieffe, Halima Smith, Chelsey N. Sudman, Marc Marion, Miranda C. Langefeld, Carl D. Becker, Mara L. Thompson, Susan D. ACR Open Rheumatol Brief Reports OBJECTIVE: Variants in the SLCO1B1 gene, encoding a hepatic methotrexate (MTX) transporter, affect clearance of high‐dose MTX. We tested whether in the *14 and *15 alleles of SLCO1B1 influenced the response to low‐dose MTX in juvenile idiopathic arthritis (JIA) patients. METHODS: The study included 310 JIA patients genotyped for three single nucleotide polymorphisms (SNPs) in SLCO1B1 (rs4149056, rs2306283, and rs11045819). A patient's SLCO1B1 diplotype was determined by combining the SNPs into the *1a, *1b, *4, *5, *14, and *15 alleles. Number of active joints at follow‐up (visit closest to 6 months of treatment and prior to starting a tumor necrosis factor inhibitor) was used as the dependent variable in a negative binomial regression model that included active joint count at baseline as a covariate. RESULTS: The SLCO1B1*14 allele was associated with less response to MTX (P = 0.024) and the *15 allele was not associated with response to MTX (P = 0.392). CONCLUSION: SLCO1B1 alleles may be associated with poor response to MTX in JIA patients. The *14 allele has been associated with fast clearance (low exposure) after high‐dose MTX in patients with leukemia. Thus, the SLCO1B1 gene may be informative for precision dosing of MTX in JIA patients. Patients carrying the *14 allele may require a higher dose than noncarriers to achieve a similar response to MTX. John Wiley and Sons Inc. 2019-03-15 /pmc/articles/PMC6858017/ /pubmed/31777781 http://dx.doi.org/10.1002/acr2.1008 Text en © 2019 The Authors. ACR Open Rheumatology published by Wiley Periodicals, Inc. on behalf of American College of Rheumatology. This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
spellingShingle | Brief Reports Ramsey, Laura B. Moncrieffe, Halima Smith, Chelsey N. Sudman, Marc Marion, Miranda C. Langefeld, Carl D. Becker, Mara L. Thompson, Susan D. Association of SLCO1B1 *14 Allele with Poor Response to Methotrexate in Juvenile Idiopathic Arthritis Patients |
title | Association of SLCO1B1 *14 Allele with Poor Response to Methotrexate in Juvenile Idiopathic Arthritis Patients |
title_full | Association of SLCO1B1 *14 Allele with Poor Response to Methotrexate in Juvenile Idiopathic Arthritis Patients |
title_fullStr | Association of SLCO1B1 *14 Allele with Poor Response to Methotrexate in Juvenile Idiopathic Arthritis Patients |
title_full_unstemmed | Association of SLCO1B1 *14 Allele with Poor Response to Methotrexate in Juvenile Idiopathic Arthritis Patients |
title_short | Association of SLCO1B1 *14 Allele with Poor Response to Methotrexate in Juvenile Idiopathic Arthritis Patients |
title_sort | association of slco1b1 *14 allele with poor response to methotrexate in juvenile idiopathic arthritis patients |
topic | Brief Reports |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6858017/ https://www.ncbi.nlm.nih.gov/pubmed/31777781 http://dx.doi.org/10.1002/acr2.1008 |
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