CXCL2 and gastric cancer: Intriguingly, we found that the expression of CXCL2 was greater in the liver metastatic niche than in the primary tumor in GC patients (Figure 3O,P) and that it was also upregulated in the metastatic lesions in the liver compared to those in the peritoneum in GC patient with multiorgan metastases, as confirmed by IHC staining (Figure S3J, Supporting Information).