GCG expression was positively correlated with expansion of several immune inflammatory tumor infiltrating cells including Th17 cells, pDC, macrophages, TFH cells, iDC, Tem, B cells, dendritic cells, neutrophils, mast cells, and eosinophils and negatively linked with NK cells, suggesting that GCG expression is closely implicated in the tumor immunoinflammatory microenvironment. This evidence concerns the gene GCG and neoplasm.