CD1C and diffuse large B-cell lymphoma: CNV was observed in prognostic TMB-related immune genes, and to verify the CNV of CD1c and the relationship between immune cell content and prognosis, we utilized the TIMER database to obtain CD1c expression between normal and tumor tissues in various cancers, and it shows that the expression level of CD1c is the highest in Thymoma (THYM), followed by that of DLBCL (Fig. 7A).