Therapy of Castleman’s disease with siltuximab – case report and review of literature

Česká verzia

Authors: Z. Adam ¹; D. Zeman ²; A. Chodacki ³; L. Pour ¹; T. Horváth ⁴; P. Benda ⁴; Z. Adamová ^5,6; M. Krejčí ¹; M. Tomíška ¹; I. Boichuk ¹; Z. Král ¹
Authors place of work: Interní hematologická a onkologická klinika LF MU a FN Brno ¹; Oddělení klinické biochemie a katedra laboratorních metod, Ústav laboratorní medicíny LF MU a FN Brno ²; PET centrum – nukleární medicína, Masarykova nemocnice, Ústí nad Labem ³; Chirurgická klinika LF MU a FN Brno ⁴; Chirurgické oddělení, Nemocnice ve Frýdku-Místku ⁵; Chirurgické oddělení, Vsetínská nemocnice ⁶
Published in the journal: Klin Onkol 2023; 37(4): 320-329
Category: Case Reports

Summary

Background: Idiopathic multicentric Castleman disease (iMCD) is characterized by constitutional symptoms, enlarged lymph nodes and laboratory test abnormalities, which are primarily related to the overproduction of interleukin-6 (IL-6). This form (iMCD) was treated earlier with cytostatics used for lymphoma, later with biologic therapy as rituximab, immunodulatory drugs and proteasome inhibitors, and in the last years with an anti-IL-6 antibody, siltuximab. Siltuximab is a human-mouse chimeric immunoglobulin G1k monoclonal antibody against human IL-6 approved in the European Union for the treatment of iMCD. In view of the limited treatment options for iMCD, this case report aimed to evaluate the efficacy and safety of siltuximab in the management of this condition.

Case: We describe a young woman with iMCD diagnosed at the age of 25 years. For first line treatment, rituximab and dexamethasone were used without any cytostatic because the patient wished to give birth to a healthy child in the future. However, the response after this first line therapy was short. In addition, after 3 years from the start of rituximab + dexamethasone therapy, it was necessary to administer treatment for the relapse of iMCD. We decided for siltuximab in this young woman, still aged < 30 years, and started administration of siltuximab in 3-week intervals.

Results: After administration of first two infusions of siltuximab, all inflammatory markers returned to normal value. Moreover, serum hemoglobin and albumin levels as well as C-reactive protein normalized after the first two administrations of siltuximab. The clinical response continue, siltuximab is still administered in 3-week intervals. PET/CT with fluorodeoxyglucose confirmed a very good anatomic and metabolic response to the treatment. Siltuximab demonstrated a favorable safety profile, and the prolonged treatment was well tolerated.

Conclusion: This result is encouraging and demonstrates the potential of siltuximab as treatment of CD. As earlier published, this case confirms that significantly elevated inflammatory markers in a patient with CD predict a good response to siltuximab.

Keywords:

siltuximab – interleukin-6 – idiopathic multicentric Castleman‘s disease

Zdroje

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