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Effectiveness of early cycles of fast-acting treatment in generalised myasthenia gravis
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  • Published on:
    Issues on factors and propensity score matching in the study of achieving the treatment target in generalised myasthenia gravis
    • Hai-feng Li, Neurologist Xuanwu Hospital Capital Medical University
    • Other Contributors:
      • Shi-min Hu, Epidemiologist

    We appreciate the author for exploring the independent factors associated with the achievement of the treatment target (MM and MM5mg) in generalized myasthenia gravis (MG) patients, including early fast-acting treatment (EFT) [1]. This study attempted to include patients treated with EFT or non-EFT by propensity score (PS) matching to obtain a balance in baseline characters between the two groups, and to determine whether EFT was an independent factor of achieving MM5mg the treatment target by adjusting the confounding factors. The primary endpoint of this study was to reach MM5mg, and Cox regression analysis was used to explore the independent factors. Some concerns are raised here for discussion with the authors.
    1. Is the starting point of the study from the beginning of immunotherapy? If so, pre-treatment factors such as gender, onset age, pre-treatment disease duration, pre-treatment worst severity, subtype, and severity at the start of treatment, need to be included. Ongoing treatment factors should include at least the dose range and duration of oral prednisone, Calcineurin inhibitors usage and intervals between their initiation time and the beginning of immunotherapy, and the number of cycles of fast-acting therapies administered 6 months after initiation of immunotherapy. All of these factors may affect the prognosis. We also wish to know whether the thymectomy was performed before or after the initiation of immunotherapy in each patient, and the interva...

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    Conflict of Interest:
    None declared.