Diffuse Large B-Cell Lymphoma Activated B-Cell Type - CISMeF
Diffuse Large B-Cell Lymphoma Activated B-Cell TypeNCIt concept
Preferred Label : Diffuse Large B-Cell Lymphoma Activated B-Cell Type;
NCIt synonyms : Diffuse Large B-Cell Lymphoma with an Activated B-Cell Expression Profile; ABC-DLBCL; ABC DLBCL; Activated B-Cell-Like Diffuse Large B-Cell Lymphoma; DLBCL Activated B-Cell Type; Non-GC/ABC DLBCL; Diffuse Large B-Cell Lymphoma Non-Germinal Center/Activated B-Cell Type; Diffuse Large B-Cell Lymphoma Non-GC/ABC;
NCIt definition : A biologic subset of diffuse large B-cell lymphomas with a unique molecular signature
or expression profile. It represents approximately 30% of diffuse large B-cell lymphomas,
and is characterized by the expression of CD44, PKCbeta1, Cyclin D2, BCL-2, and IRF4/MUM1
genes. Morphologically, these lymphomas are either centroblastic or immunoblastic
(ratio 2:1). Patients with this type of diffuse large B-cell lymphoma are reported
to have a less favorable outcome compared to those with a germinal center B-cell expression
profile, with a 5-year survival rate of 35% and a median survival of 2 years.;