Study shows potential new approach to treating two common subtypes of lymphoma

Study shows potential new approach to treating two common subtypes of lymphoma

A study at The University of Texas MD Anderson Cancer Center demonstrated a potential new approach to treating two of the most common subtypes of lymphoma through manipulation of molecular programs controlled by the cAMP-response element binding protein (CREBBP). Mutations of CREBBP are frequently found in follicular lymphoma and diffuse large B-cell lymphomas (DLBCL), and allow malignant cells to hide from the immune system. Study results were published in the Jan. 8 online issue of Cancer Discovery . Co-lead investigators, Michael Green, Ph.D., assistant professor of Lymphoma & Myeloma at MD Anderson and Ari Melnick, M.D., of Weill Cornell Medical School, reported on how inhibition of a protein called histone deacetylase 3 (HDAC3) restores immune programs lost as a result of CREBBP mutations, paving the way for potential immunotherapy approaches for common forms of non-Hodgkin lymphoma. CREBBP is the second most frequently mutated chromatin-modifying gene in both follicular lymphoma and DLBCL. It encodes a protein that alters the activity of genes by modifying the histone proteins around which DNA is wrapped. CREBBP mutations are highly recurrent in B-cell lymphomas and either inactivate its histone acetyltransferase (HAT) domain or truncate the protein. We showed that these two classes of mutations yield different degrees of disruption of the epigenome, with HAT mutations being more severe and associated with inferior clinical outcome." Michael Green, Ph.D., assistant professor of Lymphoma & Myeloma at MD Anderson Related Stories



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