Figure 6C presents the marker gene information for these cell types. Additionally, we annotated eight cell clusters within the TCGA dataset and observed variations in immune cell abundance between healthy individuals and GC patients. Notably, the abundance of NK cells was significantly decreased in GC patients compared to healthy patients, whereas the abundance of neutrophils was significantly increased (Figure 6D). Finally, our analysis revealed that CKAP2 was expressed in both NK cells and neutrophils (Figure 6E). Here, CKAP2 is linked to gastric cancer.