Fig. 2

Forest map of the causal relationship between X-12100-hydroxytryptophan-associated SNPs and pulmonary embolism. Causality between X-12100-- Hydroxy Tryptophan) and Pulmonary embolism (outcome) was analyzed using an IVW model by MR analysis, and a significant causal relationship was found (β = − 0.0294, Se = 0.01056, P = 0.005349)