Tofacitinib Monotherapy in Rheumatoid Arthritis: Comparative Efficacy in a 12-Month Prospective Cohort Study
Main Article Content
Keywords
rheumatoid arthritis, tofacitinib, efficacy
Abstract
This 12-month prospective cohort study evaluated the comparative efficacy of tofacitinib monotherapy, methotrexate (MTX) monotherapy, and their combination in rheumatoid arthritis (RA) patients. Patients meeting the 2010 ACR/EULAR classification criteria were stratified into three treatment groups. Primary endpoints were changes in Disease Activity Score-28 (DAS28) and Health Assessment Questionnaire (HAQ) scores; secondary endpoints included hemoglobin, white blood cell count, rheumatoid factor (RF), C-reactive protein (CRP), and erythrocyte sedimentation rate (ESR). At 3 months, no significant differences were observed among groups in most parameters except for lower white blood cell counts in the combination therapy group. By 6 months, the combination therapy group showed significantly reduced RF levels and DAS28 scores compared to the monotherapy groups. At 12 months, combination therapy demonstrated the most significant reduction in RF and DAS28. Tofacitinib monotherapy showed comparable efficacy to MTX monotherapy in improving DAS28 and reducing RF, with unique advantages in acute inflammation control. Notably, combination therapy led to sustained white blood cell suppression, warranting careful monitoring. Tofacitinib monotherapy emerged as a viable alternative for RA patients intolerant to MTX, offering comparable efficacy without significant myelosuppression. Future studies should validate these findings in larger cohorts and specific subgroups.
References
- Alemao, E., Bao, Y., Weinblatt, M. E., & Shadick, N. (2020). Association of seropositivity and mortality in rheumatoid arthritis and the impact of treatment with disease-modifying antirheumatic drugs: Results from a real-world study. Arthritis Care and Research, 72(2), 176-183. https://doi.org/10.1002/ACR.24071
- Bohannon, C., Powers, R., Satyabhama, L., Cui, A., Tipton, C., Michaeli, M., Skountzou, I., Mittler, R. S., Kleinstein, S. H., Mehr, R., Lee, F. E. Y., Sanz, I., & Jacob, J. (2016). Long-lived antigen-induced IgM plasma cells demonstrate somatic mutations and contribute to long-term protection. Nature Communications, 7, Article 11826. https://doi.org/10.1038/NCOMMS11826
- Chen, Q. W., Li, Q. R., Cao, M. W., Yan, J. H., & Zhang, X. Z. (2022). Hierarchy-assembled dual probiotics system ameliorates cholestatic drug-induced liver injury via gut-liver axis modulation. Advanced Science, 9(17), Article e2200986. https://doi.org/10.1002/ADVS.202200986
- Chen, Y., Wang, Y., Jiang, X., Cai, J., Chen, Y., Huang, H., Yang, Y., Zheng, L., Zhao, J., & Gao, M. (2022). Dimethylamino group modified polydopamine nanoparticles with positive charges to scavenge cell-free DNA for rheumatoid arthritis therapy. Bioactive Materials, 18, 409-420. https://doi.org/10.1016/J.BIOACTMAT.2022.03.028
- Favalli, E. G., Biggioggero, M., & Meroni, P. L. (2014). Methotrexate for the treatment of rheumatoid arthritis in the biologic era: Still an "anchor" drug? Autoimmunity Reviews, 13(11), 1102-1108. https://doi.org/10.1016/J.AUTREV.2014.08.026
- Forster, V. J., McDonnell, A., Theobald, R., & McKay, J. A. (2017). Effect of methotrexate/vitamin B12 on DNA methylation as a potential factor in leukemia treatment-related neurotoxicity. Epigenomics, 9(9), 1205-1218. https://doi.org/10.2217/EPI-2016-0165
- Furuya, M. Y., Asano, T., Sumichika, Y., Sato, S., Kobayashi, H., Watanabe, H., Suzuki, E., Kozuru, H., Yatsuhashi, H., Koga, T., Ohira, H., Sekine, H., Kawakami, A., & Migita, K. (2018). Tofacitinib inhibits granulocyte-macrophage colony-stimulating factor-induced NLRP3 inflammasome activation in human neutrophils. Arthritis Research and Therapy, 20(1), Article 196. https://doi.org/10.1186/S13075-018-1685-X
- Gruber, C. N., Calis, J. J. A., Buta, S., Evrony, G., Martin, J. C., Uhl, S. A., Caron, R., Jarchin, L., Dunkin, D., Phelps, R., Webb, B. D., Saland, J. M., Merad, M., Orange, J. S., Mace, E. M., Rosenberg, B. R., Gelb, B. D., & Bogunovic, D. (2020). Complex autoinflammatory syndrome unveils fundamental principles of JAK1 kinase transcriptional and biochemical function. Immunity, 53(3), 672-684.e611. https://doi.org/10.1016/J.IMMUNI.2020.07.006
- Hu, C., Wu, D., Yu, J., Xu, J., Liu, L., Zhang, M., Jiao, W., & Chen, G. (2022). Dihydroarteannuin ameliorates collagen-induced arthritis via inhibiting B cell activation by activating the FcγRIIb/Lyn/SHP-1 pathway. Frontiers in Pharmacology, 13, Article 883835. https://doi.org/10.3389/FPHAR.2022.883835
- Jang, S., Kwon, E. J., & Lee, J. J. (2022). Rheumatoid arthritis: Pathogenic roles of diverse immune cells. International Journal of Molecular Sciences, 23(2), Article 905. https://doi.org/10.3390/IJMS23020905
- Khanna, D., Padilla, C., Tsoi, L. C., Nagaraja, V., Khanna, P. P., Tabib, T., Kahlenberg, J. M., Young, A., Huang, S., Gudjonsson, J. E., Fox, D. A., & Lafyatis, R. (2022). Tofacitinib blocks IFN-regulated biomarker genes in skin fibroblasts and keratinocytes in a systemic sclerosis trial. JCI Insight, 7(17), Article e159566. https://doi.org/10.1172/JCI.INSIGHT.159566
- Koh, J. H., Yoon, S. J., Kim, M., Cho, S., Lim, J., Park, Y., Kim, H. S., Kwon, S. W., & Kim, W. U. (2022). Lipidome profile predictive of disease evolution and activity in rheumatoid arthritis. Experimental and Molecular Medicine, 54(2), 143-155. https://doi.org/10.1038/S12276-022-00725-Z
- Matsubara, T., Inoue, H., Nakajima, T., Tanimura, K., Sagawa, A., Sato, Y., Osano, K., Nagano, S., Ueki, Y., Hanyu, T., Hashizume, K., Amano, N., Tanaka, Y., & Takeuchi, T. (2018). Abatacept in combination with methotrexate in Japanese biologic-naive patients with active rheumatoid arthritis: A randomised placebocontrolled phase IV study. RMD Open, 4(2), Article e000813. https://doi.org/10.1136/RMDOPEN-2018-000813
- Nicoletti, P., Carr, D. F., Barrett, S., McEvoy, L., Friedmann, P. S., Shear, N. H., Nelson, M. R., Chiriac, A. M., Blanca-López, N., Cornejo-García, J. A., Gaeta, F., Nakonechna, A., Torres, M. J., Caruso, C., Valluzzi, R. L., Floratos, A., Shen, Y., Pavlos, R. K., Phillips, E. J., Demoly, P., Romano, A., Blanca, M., & Pirmohamed, M. (2021). Beta-lactam-induced immediate hypersensitivity reactions: A genome-wide association study of a deeply phenotyped cohort. Journal of Allergy and Clinical Immunology, 147(5), 1830-1837.e1815. https://doi.org/10.1016/J.JACI.2020.10.004
- Palmroth, M., Kuuliala, K., Peltomaa, R., Virtanen, A., Kuuliala, A., Kurttila, A., Kinnunen, A., Leirisalo-Repo, M., Silvennoinen, O., & Isomäki, P. (2021). Tofacitinib suppresses several JAK-STAT pathways in rheumatoid arthritis In vivo and baseline signaling profile associates with treatment response. Frontiers in Immunology, 12, Article 738481. https://doi.org/10.3389/FIMMU.2021.738481
- Pisaniello, H. L., Whittle, S. L., Lester, S., Menz, F., Metcalf, R., McWilliams, L., Hill, C. L., & Proudman, S. (2022). Using the derived 28-joint disease activity score patient-reported components (DAS28-p) index as a discriminatory measure of response to disease-modifying anti-rheumatic drug therapy in early rheumatoid arthritis. BMC Rheumatology, 6(1), Article 6. https://doi.org/10.1186/S41927-022-00299-3
- Pope, J., Finckh, A., Silva-Fernández, L., Mandl, P., Fan, H., Rivas, J. L., Valderrama, M., & Montoro, M. (2024). Tofacitinib monotherapy in rheumatoid arthritis: Clinical trials and real-world data contextualization of patients, efficacy, and treatment retention. Open Access Rheumatology: Research and Reviews, 16, 115-126. https://doi.org/10.2147/OARRR.S446431
- Schoels, M., Alasti, F., Smolen, J. S., & Aletaha, D. (2017). Evaluation of newly proposed remission cut-points for disease activity score in 28 joints (DAS28) in rheumatoid arthritis patients upon IL-6 pathway inhibition. Arthritis Research and Therapy, 19(1), Article 155. https://doi.org/10.1186/S13075-017-1346-5
- Smolen, J. S., Landewé, R. B. M., Bergstra, S. A., Kerschbaumer, A., Sepriano, A., Aletaha, D., Caporali, R., Edwards, C. J., Hyrich, K. L., Pope, J. E., De Souza, S., Stamm, T. A., Takeuchi, T., Verschueren, P., Winthrop, K. L., Balsa, A., Bathon, J. M., Buch, M. H., Burmester, G. R., Buttgereit, F., Cardiel, M. H., Chatzidionysiou, K., Codreanu, C., Cutolo, M., Den Broeder, A. A., El Aoufy, K., Finckh, A., Fonseca, J. E., Gottenberg, J. E., Haavardsholm, E. A., Iagnocco, A., Lauper, K., Li, Z., McInnes, I. B., Mysler, E. F., Nash, P., Poor, G., Ristic, G. G., Rivellese, F., Rubbert-Roth, A., Schulze-Koops, H., Stoilov, N., Strangfeld, A., Van Der Helm-Van Mil, A., Van Duuren, E., Vliet Vlieland, T. P. M., Westhovens, R., & Van Der Heijde, D. (2022). EULAR recommendations for the management of rheumatoid arthritis with synthetic and biological disease-modifying antirheumatic drugs: 2022 update. Annals of the Rheumatic Diseases, 82(1), 3-18. https://doi.org/10.1136/ARD-2022-223356
- Takeuchi, T., Tanaka, Y., Sugiyama, N., Iikuni, N., Soma, K., Shi, H., Mysler, E., Moots, R. J., Smolen, J. S., & Fleischmann, R. (2019). THU0193 efficacy of tofacitinib monotherapy, tofacitinib with methotrexate AND adalimumab with methotrexate in patients with early (≤2 years) vs established (>2 years) rheumatoid arthritis: A post hoc analysis of data from oral strategy. Annals of the Rheumatic Diseases, 78(2), 373-374. https://doi.org/10.1136/ANNRHEUMDIS-2019-EULAR.587
- Togashi, T., Ishihara, R., Watanabe, R., Shiomi, M., Yano, Y., Fujisawa, Y., Katsushima, M., Fukumoto, K., Yamada, S., & Hashimoto, M. (2025). Rheumatoid factor: Diagnostic and prognostic performance and therapeutic implications in rheumatoid arthritis. Journal of Clinical Medicine, 14(5), Article 1529. https://doi.org/10.3390/JCM14051529