Following the clustering with Harmony and PCA, the significant differences in tumour‐CS or stroma‐CS in each cluster between CP‐i and CP‐s samples were evaluated by the Wilcoxon test, indicating that regardless of tumour‐CS or stroma‐CS, the values in all the clusters of CP‐s were greater than CP‐i (Figure S4A). This evidence concerns the gene CP and neoplasm.