Furthermore, correlation analysis between C1R protein levels and various tumor microenvironment‐related signatures revealed that C1R positively correlated with multiple critical microenvironment scores, including ESTIMATE Stromal Score, ESTIMATE Immune Score, xcell stroma score, xcell immune score, xcell microenvironment score, xcell Macrophage score, xcell Macrophage M2 score, and xcell B cell score (Figure S1I). The gene discussed is C1R; the disease is neoplasm.