Clinical use of dimethyl fumarate in multiple sclerosis treatment: an update to include China, using a modified Delphi method.

Gold, Ralf; Barnett, Michael; Chan, Andrew; Feng, Huiyu; Fujihara, Kazuo; Giovannoni, Gavin; Montalbán, Xavier; Shi, Fu-Dong; Tintoré, Mar; Xue, Qun; Yang, Chunsheng; Zhou, Hongyu (2023). Clinical use of dimethyl fumarate in multiple sclerosis treatment: an update to include China, using a modified Delphi method. Therapeutic advances in neurological disorders, 16(17562864231180734), p. 17562864231180734. Sage 10.1177/17562864231180734

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Dimethyl fumarate (DMF) is a widely used oral disease-modifying therapy for multiple sclerosis (MS). Its efficacy and safety profiles are supported by over a decade of experience. Differences exist between Asia and Europe/United States in the prevalence and characteristics of MS; most data for DMF are derived from populations outside Asia. DMF was recently (2021) approved for use in China. The objectives of this review were to evaluate the evidence for DMF's profile, to provide an update to healthcare providers on current knowledge surrounding its use and to assess the relevance of existing data to use in China. This study used a modified Delphi method based on the insights of a scientific Steering Committee (SC), with a structured literature review conducted to assess the data of DMF. The literature review covered all papers in English (from 01 January 2011 to 21 February 2022) that include 'dimethyl fumarate' and 'multiple sclerosis', and their MeSH terms, on PubMed, supplemented by EMBASE and Citeline searches. Papers were categorized by topic and assessed for relevance and quality, before being used to formulate statements summarizing the literature on each subject. SC members voted on/revised statements, requiring ⩾80% agreement and ⩽10% disagreement for inclusion. Statements not reaching this level were discussed further until agreement was reached or until there was agreement to remove the statement. A total of 1030 papers were retrieved and used to formulate the statements and evidence summaries considered by the SC members. A total of 45 statements were agreed by the SC members. The findings support the positive efficacy and safety profile of DMF in treating patients with MS. Limited Chinese patient data are an ongoing consideration; however, based on current evidence, the statements are considered applicable to both the global and Chinese populations. DMF is a valuable addition to address unmet MS treatment needs in China. Registration: Not applicable.

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