Mechanism and clinical utility of abatacept in the treatment of rheumatoid arthritis

Abatacept, a biological disease-modifying antirheumatic drug(bDMARD), has demonstrated unique and effective therapeutic properties for rheumatoid arthritis (RA). This review offers an in-depth examination of the mechanism by which abatacept exerts its effects in RA treatment and assesses its efficacy and safety based on a range of studies. We conducted a comprehensive search of PubMed, Embase databases, Web of Science, the Cochrane Library, MEDLINE, Wanfang Data, and CNKI from the time the databases were created until 30 July 2024. By modulating the CD28 and CD80/CD86 costimulatory signaling pathways, abatacept is instrumental in regulating immune cells and cytokines implicated in the pathogenesis RA. Longitudinal studies have highlighted its capacity to mitigate disease advancement and maintain joint functionality. The most frequently reported adverse effects associated with abatacept are headache, nausea, and upper respiratory tract infections, which are typically self-resolving. The incidence of serious infections was not high, mainly various types of bacterial pneumonia. Comparative safety analyses of abatacept with other DMARDs yield encouraging results. As our understanding of the mechanism of action of abatacept improves, we may be able to better identify appropriate biologic therapies and advanced combination therapies for RA patients and ultimately improve patient outcomes.