YY1 and diffuse large B-cell lymphoma: Similar investigations show upregulated expression of YY1 in several other cancer types such as lung cancer, ovarian cancer, cervical cancer, liver cancer, bladder cancer, bone cancer, skin cancer and in a few types of non-solid tumors such as acute myeloid leukemia (AML), follicular lymphoma (FL) and diffuse large B-cell lymphoma (DLBCL) [3, 4].