KCND2 and gastric cancer: To further explore the mechanism of how KCND2 promotes the growth of gastric cancer, we undertook GO‐KEEG functional as well as enrichment pathway analysis, and our data showed that KCND2 expression was associated with immune system process, cytokine‐cytokine receptor interaction, nature killer cell mediate cytotoxicity (Figure 3A,B), suggesting that KCND2 might regulate the immune system.