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Updated: May 25, 2026

An Adoptive Transfer Model of Rheumatoid Arthritis in Mice
Published on: June 6, 2025
[Rheumatoid arthritis and multiple myeloma as comorbidity. Is tocilizumab a therapy option?]
1Klinik Innere Medizin IV (Rheumatologie, klinische Immunologie und Nephrologie), HSK, Dr.-Horst-Schmidt-Kliniken GmbH, Ludwig-Erhard-Str. 100, 65199, Wiesbaden, Deutschland. norbert.schuetz@hsk-wiesbaden.de
Abstract:
Multiple myeloma (MM) is a disease of the elderly with an incidence of 4/100,000 per year and can occur as a comorbidity especially in elderly patients with rheumatoid arthritis (RA). For MM and also for RA interleukin-6 (IL-6) is a pathogenetically important cytokine in both disease events. This article presents the case of a female patient who achieved sustained remission of RA and stabilization of MM with quantitative reduction of paraprotein by treatment with tocilizumab. The question whether tocilizumab represents a meaningful treatment approach for treatment of RA when MM is also present will be discussed.
Insights
Tocilizumab effectively treated rheumatoid arthritis (RA) and stabilized multiple myeloma (MM) in an elderly patient. This suggests tocilizumab may be a viable treatment for RA with co-existing MM.
Area of Science:
- Rheumatology
- Oncology
- Immunology
Background:
- Multiple myeloma (MM) and rheumatoid arthritis (RA) are common in the elderly.
- Interleukin-6 (IL-6) plays a key role in the pathology of both MM and RA.
Observation:
- A case study of an elderly female patient with both MM and RA was presented.
- The patient was treated with tocilizumab, an IL-6 receptor inhibitor.
Findings:
- Tocilizumab treatment resulted in sustained remission of RA.
- The treatment also led to stabilization of MM, with a quantitative reduction in paraprotein.
Implications:
- Tocilizumab may be a beneficial treatment option for patients with RA and co-existing MM.
- Further investigation into IL-6 targeted therapies for combined MM and RA is warranted.
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