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BACKGROUND: The causal association between the gut microbiome and the development of migraine and its subtypes remains unclear. METHODS: The single nucleotide polymorphisms concerning gut microbiome were retrieved from the gene-wide association study (GWAS) of the MiBioGen consortium. The summary statistics datasets of migraine, migraine with aura (MA), and migraine without aura (MO) were obtained from the GWAS meta-analysis of the International Headache Genetics Consortium (IHGC) and FinnGen consortium. Inverse variance weighting (IVW) was used as the primary method, complemented by sensitivity analyses for pleiotropy and increasing robustness. RESULTS: In IHGC datasets, ten, five, and nine bacterial taxa were found to have a causal association with migraine, MA, and MO, respectively, (IVW, all P 

Original publication




Journal article


J Headache Pain

Publication Date





Causal association, Gut microbiome, Mendelian randomization, Migraine, Migraine with aura, Migraine without aura, Humans, Gastrointestinal Microbiome, Genetic Association Studies, Genome-Wide Association Study, Headache, Migraine Disorders, Migraine with Aura