2015), and previous studies indicating that each isoform of IL‐17 increases the risk of IBD (Cai et al. 2023). In addition, IL‐17 is involved in the pathogenesis of many other inflammatory diseases, including neurological disorders. The results of this MR study suggest that IL_17C is also a potential risk factor for BP. Previous studies have shown that IL‐17 contributes to the neuroinflammatory response after neurological injury (Kim and Moalem‐Taylor 2011). Another study indicated that IL_17C is a neurotrophic cytokine (Peng et al. 2017; Iliev et al. 2023). Here, IL17A is linked to nervous system disorder.