Fig. 4

Hierarchical clustering heatmaps of potential lipid biomarkers in plasma from A healthy and QDLS group, B healthy and QDYD group, and C QDLS and QDYD group; D Pathway analysis of altered lipids between QDLS and QDYD syndromes of lung cancer; E Pathway analysis of altered lipids in lung cancer patients. 1, glycerophospholipid metabolism; 2, sphingolipid metabolism; 3, primary bile acid biosynthesis; 4, steroid biosynthesis; 5, glycerolipid metabolism