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Article History

Received: 18 June 2024

Accepted: 28 January 2025

First Online: 26 February 2025

Declarations

:

: All procedures with human participants’ involvement were following the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This is an observational study, and the local ethics committee for clinical research has confirmed that no ethical approval is required. Before administration of the efgartigimod, we clearly informed the efficacy and AEs of it and fully explained the purpose and content of this study. Moreover, as this is a retrospective study with no additional interventions, the requirement for written informed consent was waived. Every patient who filled out the questionnaire indicated agreement to participate.

: All patients indicated agreement for publication. No personal information of the participants has been disclosed in this manuscript.

: The authors declare no competing interests.