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Article History

Received: 17 February 2026

Accepted: 24 March 2026

First Online: 31 March 2026

Change Date: 12 April 2026

Change Type: Update

Change Details: The original online version of this article was revised: The street address for Department of Neurology, Graduate School of Medicine, Chiba University was unexpectedly duplicated as "1-8-1 1-8-1."

Declarations

:

: The requirement for written informed consent was waived by the Ethics Committees of the Chiba University School of Medicine (IRB No. 2266). All participants were provided the opportunity to opt-out of the study.

: This study was conducted in accordance with the 1964 Helsinki Declaration and its later amendments. The study was approved by the Ethics Committees of the Chiba University School of Medicine (IRB No. 2266).

: M. Yasuda received honoraria from Alexion Pharmaceuticals, Argenx, UCB, Asahi Kasei Medical, and Japan Blood Products Organization. A. Uzawa received honoraria from Alexion Pharmaceuticals, Argenx, Novartis, Chugai Pharmaceutical, and UCB. H. Handa received honoraria from Argenx and Chugai Pharmaceutical. K. Kurumada received honoraria from Alexion Pharmaceuticals. M. Mori received honoraria from Alexion Pharmaceuticals, Novartis, Chugai Pharmaceutical, and Mitsubishi Tanabe Pharma, and Biogen. S. Kuwabara received honoraria from Argenx and CSL Behring. E. Ogaya and K. Takasaka declare no conflict of interest.

: Not applicable.