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KMID : 0338420210360020424
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The Korean Journal of Internal Medicine
2021 Volume.36 No. 2 p.424 ~ p.432
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The clinical, laboratory, and radiologic improvement due to siltuximab treatment in idiopathic multicentric Castleman’s disease
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Min Gi-June
Jeon Young-Woo
Park Sung-Soo
Park Silvia
Shin Seung-Hawn
Yahng Seung-Ah
Yoon Jae-Ho
Lee Sung-Eun
Cho Byung-Sik
Eom Ki-Seong
Kim Yoo-Jin
Lee Seok
Kim Hee-Je
Min Chang-Ki
Kim Dong-Wook
Lee Jong-Wook
Cho Seok-Goo
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Abstract
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Background/Aims: Idiopathic multicentric Castleman disease (iMCD) comprises approximately 30% of all cases of Castleman disease. It is characterized by constitutional symptoms, enlarged lymph nodes at multiple anatomical sites, and laboratory test abnormalities, which are primarily related to the overproduction of interleukin 6 (IL-6). Siltuximab is a human-mouse chimeric immunoglobulin G1κ monoclonal antibody against human IL-6. In view of the limited treatment options for iMCD, this study aimed to evaluate the efficacy and safety of siltuximab in the management of this condition.
Methods: In this real-world retrospective study, we administered siltuximab to 15 patients with iMCD who previously received conventional chemotherapy and/or steroid pulse therapy. The median time to a durable symptomatic response was 22 days (range, 17 to 56). The serum hemoglobin and albumin levels and erythrocyte sedimentation rates significantly normalized after the first 3 months of siltuximab treatment. Lymph node involution, assessed using imaging, was relatively gradual, demonstrating a complete or partial response at 6 months.
Results: On an average, the improvements in clinical, laboratory, and radiologic parameters of iMCD in responders were observed after one, three, and eight cycles of siltuximab treatment, respectively. Siltuximab demonstrated a favorable safety profile, and prolonged treatment was well-tolerated.
Conclusions: Despite the small sample size of the present study, the results are encouraging and demonstrate the potential of siltuximab as the first-line treatment of iMCD. Further large multicenter studies are needed to evaluate the clinical outcomes and adverse events associated with siltuximab.
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KEYWORD
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Multi-centric Castleman's disease, Siltuximab, Interleukin-6, Tolerance
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