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. 2022 Dec 8;78(3):297–308. doi: 10.1136/thorax-2022-219103

Figure 8.

Figure 8

Differential microbial pathways between lymphotypes showing similar core pathways enriched in the Mycobacterium-dominated lymphotype. (A) Volcano plot showing differentially abundant microbial pathways inferred by PICRUSt2 in oL2 vs oL4 representing pathways enriched in oL4 compared with every other oL in all patients (overall including dTBLs and nTBLs). Significantly more discriminatory pathways appear closer to the left or right, and higher above the threshold (red dotted line, FDR=0.05) as significance increases. Relative pathway abundance is indicated by circle size. (B) 65.5% of all inferred pathways enriched in oL4 compared with each other oLS were common, while (C) 85.8% were common in dL3 compared with each other dTBL lymphotypes. Differentially enriched pathways common in all comparisons with the Mycobacterium dominant lymphotype included pathways involving lipid biosynthesis, fatty acids and SCFA metabolism, that is, lipid biosynthesis proteins, propanoate metabolism, benzoate degradation, and valine, leucine and isoleucine degradation. dL, dTBL lymphotype; dTBLs: definite-TBLs; FDR, false discovery rate; nTBLs: non-TBL; oL: overall lymphotype; SCFA: short-chain fatty acid.