Figure 3. Identification of IRG subtypes in GC. (A) Consensus matrix heatmap defining two clusters (k = 2) and their correlation area. (B) A considerable transcriptome divergence between the two subtypes is seen by PCA analysis. (C) The Kaplan–Meier curve of OS analysis between different cluster groups. (D) The Kaplan–Meier curve of PFS analysis between different cluster groups. (E) Differences in clinicopathologic features and expression levels of IRGs between the two subtypes.