Summary of the current status of clinically diagnosed cases of Schnitzler syndrome in Japan
Copyright © 2022 Japanese Society of Allergology. Published by Elsevier B.V. All rights reserved..
BACKGROUND: Schnitzler syndrome is a rare disorder with chronic urticaria, and there is no report summarizing the current status in Japan.
METHODS: A nationwide survey of major dermatology departments in Japan was conducted in 2019. We further performed a systematic search of PubMed and Ichushi-Web, using the keywords "Schnitzler syndrome" and "Japan" then contacted the corresponding authors or physicians for further information.
RESULTS: Excluding duplicates, a total of 36 clinically diagnosed cases were identified from 1994 through the spring of 2022, with a male to female ratio of 1:1. The median age of onset was 56.5 years. It took 3.3 years from the first symptom, mostly urticaria, to reach the final diagnosis. The current status of 30 cases was ascertained; two patients developed B-cell lymphoma. SchS treatment was generally effective with high doses of corticosteroids, but symptoms sometimes recurred after tapering. Colchicine was administered in 17 cases and was effective in 8, but showed no effect in the others. Tocilizumab, used in six cases, improved laboratory abnormalities and symptoms, but lost its efficacy after several years. Rituximab, used in five cases, was effective in reducing serum IgM levels or lymphoma mass, but not in inflammatory symptoms. Four cases were treated with IL-1 targeting therapy, either anakinra or canakinumab, and achieved complete remission, except one case with diffuse large B-cell lymphoma.
CONCLUSIONS: Since Schnitzler syndrome is a rare disease, the continuous collection and long-term follow-up of clinical information is essential for its appropriate treatment and further understanding of its pathophysiology.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:72 |
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| Enthalten in: |
Allergology international : official journal of the Japanese Society of Allergology - 72(2023), 2 vom: 02. Apr., Seite 297-305 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Takimoto-Ito, Riko [VerfasserIn] |
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| Links: |
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| Themen: |
Autoinflammatory disorders |
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| Anmerkungen: |
Date Completed 04.04.2023 Date Revised 04.04.2023 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.alit.2022.11.004 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 245 | 1 | 0 | |a Summary of the current status of clinically diagnosed cases of Schnitzler syndrome in Japan |
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| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2022 Japanese Society of Allergology. Published by Elsevier B.V. All rights reserved. | ||
| 520 | |a BACKGROUND: Schnitzler syndrome is a rare disorder with chronic urticaria, and there is no report summarizing the current status in Japan | ||
| 520 | |a METHODS: A nationwide survey of major dermatology departments in Japan was conducted in 2019. We further performed a systematic search of PubMed and Ichushi-Web, using the keywords "Schnitzler syndrome" and "Japan" then contacted the corresponding authors or physicians for further information | ||
| 520 | |a RESULTS: Excluding duplicates, a total of 36 clinically diagnosed cases were identified from 1994 through the spring of 2022, with a male to female ratio of 1:1. The median age of onset was 56.5 years. It took 3.3 years from the first symptom, mostly urticaria, to reach the final diagnosis. The current status of 30 cases was ascertained; two patients developed B-cell lymphoma. SchS treatment was generally effective with high doses of corticosteroids, but symptoms sometimes recurred after tapering. Colchicine was administered in 17 cases and was effective in 8, but showed no effect in the others. Tocilizumab, used in six cases, improved laboratory abnormalities and symptoms, but lost its efficacy after several years. Rituximab, used in five cases, was effective in reducing serum IgM levels or lymphoma mass, but not in inflammatory symptoms. Four cases were treated with IL-1 targeting therapy, either anakinra or canakinumab, and achieved complete remission, except one case with diffuse large B-cell lymphoma | ||
| 520 | |a CONCLUSIONS: Since Schnitzler syndrome is a rare disease, the continuous collection and long-term follow-up of clinical information is essential for its appropriate treatment and further understanding of its pathophysiology | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Autoinflammatory disorders | |
| 650 | 4 | |a Chronic urticaria | |
| 650 | 4 | |a Japan | |
| 650 | 4 | |a Monoclonal gammopathy | |
| 650 | 4 | |a Schnitzler syndrome | |
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| 700 | 1 | |a Izawa, Kazushi |e verfasserin |4 aut | |
| 700 | 1 | |a Jo, Tomoyasu |e verfasserin |4 aut | |
| 700 | 1 | |a Kazuma, Yasuhiro |e verfasserin |4 aut | |
| 700 | 1 | |a Yoshifuji, Hajime |e verfasserin |4 aut | |
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| 700 | 1 | |a Fujita, Yuya |e verfasserin |4 aut | |
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