Methotrexate is commonly used in combination with biologic DMARDs in the treatment of rheumatoid arthritis on the basis that the combined therapy has synergistic benefits. New data challenge this concept in the treatment of older adults and highlight the uncertainty of the mode of action of methotrexate in this population.
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Lahaye, C., Soubrier, M. Does methotrexate improve TNF inhibitor drug survival in elderly patients with RA?. Nat Rev Rheumatol 16, 353–354 (2020). https://doi.org/10.1038/s41584-020-0411-7
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DOI: https://doi.org/10.1038/s41584-020-0411-7