FADS1 and asthma: Cis-eQTL-MR found that the genetically predicted expression level of FADS1 gene was negatively associated with the risk of asthma, with no presence of heterogeneity or pleiotropy detected by the MR-Egger intercept and the MR-PRESSO method (Pintercept = 0.304, PMR-PRESSO global test = 0.36; Additional file 1: Table S7, Figure S7 A-B).