Fig. 5From: Untargeted serum metabolomics reveals novel metabolite associations and disruptions in amino acid and lipid metabolism in Parkinson’s diseaseVolcano plot showing the combined fold change and p-values for 34 metabolites associated with PD in Shao et al, 2021 and detected in the current study LCMS data. The meta-analysis was performed using the amanida R package, designed to combine results when only the fold change, p-value, and sample size are available. P-values and log2FC are combined separately to assess validation on direction and magnitude of effect and significance separately, allowing metabolites associated in opposite directions to still be highlightedBack to article page