Clinical trial · Observational
A Retrospective Cohort Study on the Risk of Serious Infections in Rheumatoid Arthritis Patients Receiving Tocilizumab
A Retrospective Cohort Study to Examine the Risk of Serious Infections in Rheumatoid Arthritis Patients Receiving Tocilizumab Compared With Tumor Necrosis Factor Inhibitors Using the National Health Insurance Database
NCT04115423CI-TRIAL-00047066unknownClinicalTrials.gov clinicaltrialsProvenance
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
The purpose of this study is to evaluate whether the risk of serious infections in rheumatoid arthritis patients with tocilizumab is higher than in those with tumor necrosis factor inhibitors using the nationwide real-world data.
Conditions
Conditions (2)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Infection | — | UNRESOLVED | — |
| Rheumatoid Arthritis | — | UNRESOLVED | — |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Tocilizumab | Drug | — | UNRESOLVED |
| Tumor Necrosis Factor Inhibitor (etanercept, infliximab, adalimumab, and golimumab) | Drug | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- label
- Tocilizumab initiators
- description
- Patients over 18 years of age with a diagnosis of RA (ICD-10 codes: M05-06) and receiving tocilizumab at least once from January 2013 to December 2018. Tocilizumab initiators are required to have no record of tocilizumab within 1 year prior to the first prescription of tocilizumab.
- interventionNames
- Drug: Tocilizumab
- label
- Tumor necrosis factor inhibitors (TNFi) users
- description
- Patients over 18 years of age with a diagnosis of RA (ICD-10 codes: M05-06) and receiving TNFi at least once from January 2013 to December 2018. TNFi users will be patients who had no record of tocilizumab and given specific TNFi during 1 year before the first prescription of TNFi.
- interventionNames
- Drug: Tumor Necrosis Factor Inhibitor (etanercept, infliximab, adalimumab, and golimumab)
Primary outcomes (1)
- measure
- Hazard ratio for serious infections
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * Individuals who had a diagnosis of rheumatoid arthritis (ICD-10 codes: M05-06) between 2013 and 2018 Exclusion Criteria: * Individuals less than 18 years of age * Having no records of prescription of tocilizumab or TNFi at least once between 2013 and 2018
References
Publications (10)
- BACKGROUNDJones G, Panova E. New insights and long-term safety of tocilizumab in rheumatoid arthritis. Ther Adv Musculoskelet Dis. 2018 Oct 7;10(10):195-199. doi: 10.1177/1759720X18798462. eCollection 2018 Oct. PMID 30327685
- BACKGROUNDRamiro S, Sepriano A, Chatzidionysiou K, Nam JL, Smolen JS, van der Heijde D, Dougados M, van Vollenhoven R, Bijlsma JW, Burmester GR, Scholte-Voshaar M, Falzon L, Landewe RBM. Safety of synthetic and biological DMARDs: a systematic literature review informing the 2016 update of the EULAR recommendations for management of rheumatoid arthritis. Ann Rheum Dis. 2017 Jun;76(6):1101-1136. doi: 10.1136/annrheumdis-2016-210708. Epub 2017 Mar 15. PMID 28298374
- BACKGROUNDSingh JA. Infections With Biologics in Rheumatoid Arthritis and Related Conditions: a Scoping Review of Serious or Hospitalized Infections in Observational Studies. Curr Rheumatol Rep. 2016 Oct;18(10):61. doi: 10.1007/s11926-016-0609-5. PMID 27613285
- BACKGROUNDSingh JA, Hossain A, Tanjong Ghogomu E, Mudano AS, Maxwell LJ, Buchbinder R, Lopez-Olivo MA, Suarez-Almazor ME, Tugwell P, Wells GA. Biologics or tofacitinib for people with rheumatoid arthritis unsuccessfully treated with biologics: a systematic review and network meta-analysis. Cochrane Database Syst Rev. 2017 Mar 10;3(3):CD012591. doi: 10.1002/14651858.CD012591. PMID 28282491
- BACKGROUNDNishimoto N, Ito K, Takagi N. Safety and efficacy profiles of tocilizumab monotherapy in Japanese patients with rheumatoid arthritis: meta-analysis of six initial trials and five long-term extensions. Mod Rheumatol. 2010 Jun;20(3):222-32. doi: 10.1007/s10165-010-0279-5. Epub 2010 Mar 11. PMID 20221663
- BACKGROUNDSakai R, Cho SK, Nanki T, Watanabe K, Yamazaki H, Tanaka M, Koike R, Tanaka Y, Saito K, Hirata S, Amano K, Nagasawa H, Sumida T, Hayashi T, Sugihara T, Dobashi H, Yasuda S, Sawada T, Ezawa K, Ueda A, Fujii T, Migita K, Miyasaka N, Harigai M; REAL Study Group. Head-to-head comparison of the safety of tocilizumab and tumor necrosis factor inhibitors in rheumatoid arthritis patients (RA) in clinical practice: results from the registry of Japanese RA patients on biologics for long-term safety (REAL) registry. Arthritis Res Ther. 2015 Mar 23;17(1):74. doi: 10.1186/s13075-015-0583-8.