CCND3 and diffuse large B-cell lymphoma: Diffuse large B-cell lymphoma (DLBCL) is the most common form of non-Hodgkin’s lymphoma, and alterations in the cyclin D/CDK4-6 pathway are found in approximately 67% of DLBCL cases, with CCND3 overexpression accounting for 53% [105,106,107].