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. 2024 Jun;76(6):949-962.
doi: 10.1002/art.42808. Epub 2024 Mar 7.

Clinical Characteristics of Cryopyrin-Associated Periodic Syndrome and Long-Term Real-World Efficacy and Tolerability of Canakinumab in Japan: Results of a Nationwide Survey

Takayuki Miyamoto  1 Kazushi Izawa  1 Sho Masui  1 Atsue Yamazaki  1 Yuichi Yamasaki  2 Tadashi Matsubayashi  3 Mayuka Shiraki  4 Hidenori Ohnishi  4 Junko Yasumura  5 Tomohiro Kawabe  6 Takako Miyamae  6 Tomoyo Matsubara  7 Naoya Arakawa  8 Takashi Ishige  8 Takumi Takizawa  8 Asami Shimbo  9 Masaki Shimizu  9 Naoki Kimura  9 Yuichi Maeda  10 Yuta Maruyama  11 Tomonari Shigemura  11 Junichi Furuta  12 Satoshi Sato  13 Hiroshi Tanaka  14 Miharu Izumikawa  15 Masahiro Yamamura  16 Toshio Hasegawa  17 Hiroshi Kaneko  18 Yasuo Nakagishi  19 Naoko Nakano  20 Yasunori Iida  21 Tamaki Nakamura  21 Hiroyuki Wakiguchi  21 Takayuki Hoshina  22 Toshinao Kawai  23 Kosaku Murakami  1 Shuji Akizuki  1 Akio Morinobu  1 Koichiro Ohmura  24 Katsuhide Eguchi  25 Motoshi Sonoda  25 Masataka Ishimura  25 Kenji Furuno  26 Momoko Kashiwado  27 Masaaki Mori  28 Kimito Kawahata  27 Koremasa Hayama  29 Kumiko Shimoyama  30 Natsuko Sasaki  22 Taisuke Ito  30 Hiroaki Umebayashi  31 Tae Omori  32 Seiko Nakamichi  33 Tomotsune Dohmoto  34 Yasuyuki Hasegawa  34 Hisashi Kawashima  35 Shojiro Watanabe  36 Yuichiro Taguchi  37 Haruna Nakaseko  38 Naomi Iwata  38 Hiroki Kohno  6 Taiki Ando  17 Yasuhiko Ito  39 Yuko Kataoka  40 Takako Saeki  41 Utako Kaneko  42 Ayako Murase  43 Seira Hattori  43 Tomo Nozawa  43 Kenichi Nishimura  43 Reiji Nakano  44 Misa Watanabe  45 Masato Yashiro  46 Tomonori Nakamura  47 Toshihiko Komai  48 Kentaro Kato  1 Yoshitaka Honda  1 Eitaro Hiejima  1 Atsushi Yonezawa  1 Kazuhisa Bessho  1 Satoshi Okada  5 Osamu Ohara  49 Junko Takita  1 Takahiro Yasumi  1 Ryuta Nishikomori  50 Japan CAPS Working Group
Collaborators, Affiliations

Clinical Characteristics of Cryopyrin-Associated Periodic Syndrome and Long-Term Real-World Efficacy and Tolerability of Canakinumab in Japan: Results of a Nationwide Survey

Takayuki Miyamoto et al. Arthritis Rheumatol. 2024 Jun.

Abstract

Objective: We assess the clinical characteristics of patients with cryopyrin-associated periodic syndrome (CAPS) in Japan and evaluate the real-world efficacy and safety of interleukin-1 (IL-1) inhibitors, primarily canakinumab.

Methods: Clinical information was collected retrospectively, and serum concentrations of canakinumab and cytokines were analyzed.

Results: A total of 101 patients were included, with 86 and 15 carrying heterozygous germline and somatic mosaic mutations, respectively. We identified 39 mutation types, and the common CAPS-associated symptoms corresponded with those in previous reports. Six patients (5.9% of all patients) died, with four of the deaths caused by CAPS-associated symptoms. Notably, 73.7% of patients (100%, 79.6%, and 44.4% of familial cold autoinflammatory syndrome, Muckle-Wells syndrome, and chronic infantile neurological cutaneous articular syndrome/neonatal onset multisystem inflammatory disease, respectively) achieved complete remission with canakinumab, and early therapeutic intervention was associated with better auditory outcomes. In some patients, canakinumab treatment stabilized the progression of epiphysial overgrowth and improved height gain, visual acuity, and renal function. However, 23.7% of patients did not achieve inflammatory remission with crucial deterioration of organ damage, with two dying while receiving high-dose canakinumab treatment. Serological analysis of canakinumab and cytokine concentrations revealed that the poor response was not related to canakinumab shortage. Four inflammatory nonremitters developed inflammatory bowel disease (IBD)-unclassified during canakinumab treatment. Dual biologic therapy with canakinumab and anti-tumor necrosis factor-α agents was effective for IBD- and CAPS-associated symptoms not resolved by canakinumab monotherapy.

Conclusion: This study provides one of the largest epidemiologic data sets for CAPS. Although early initiation of anti-IL-1 treatment with canakinumab is beneficial for improving disease prognosis, some patients do not achieve remission despite a high serum concentration of canakinumab. Moreover, IBD may develop in CAPS after canakinumab treatment.

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