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Updated: Dec 17, 2025

Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors
Published on: August 5, 2022
Hypomethylating Agents in Lymphoma
Jacob C Cogan1, Yuxuan Liu1, Jennifer E Amengual2
1Division of Hematology and Oncology, Columbia University Medical Center, William Black Building, 650 W 168th Street, Room 901, New York, NY, 10032, USA.
Opinion Statement:
Epigenetic mutations are frequent and pathogenic in select subtypes of lymphoma, and agents modulating DNA and histone methylation-such as inhibitors of DNMT and EZH2, respectively-have demonstrated promise in treating these diseases. In particular, lymphomas derived from the germinal center-GC-DLBCL, FL, and AITL-are all characterized by epigenetic derangements. In an effort to target these derangements, DNMT inhibitors have been investigated as a means of improving responsiveness to chemotherapy in DLBCL patients, or as monotherapy or in combination with other epigenetic agents in the treatment of TCL. Histone methyltransferase inhibitors have demonstrated effectiveness in R/R FL patients with EZH2-activating mutations. New treatment options that target the pathogenesis of disease are needed. HDAC inhibitors have been in the clinic for over a decade for the treatment of lymphoma, and now methyltransferase inhibitors are finding their niche for this disease.
Insights
Epigenetic mutations drive lymphoma development. Inhibitors targeting DNA and histone methylation show promise for treating these cancers, offering new therapeutic avenues.
Area of Science:
- Oncology
- Epigenetics
- Hematology
Background:
- Epigenetic mutations are common and pathogenic in specific lymphoma subtypes.
- Germinal center-derived lymphomas (GC-DLBCL, FL, AITL) exhibit epigenetic dysregulation.
- Current treatments need improvement, necessitating novel therapeutic strategies targeting disease pathogenesis.
Purpose of the Study:
- To explore the therapeutic potential of epigenetic modulators in lymphoma treatment.
- To investigate the role of DNA methyltransferase (DNMT) and EZH2 inhibitors in various lymphoma subtypes.
- To highlight the emerging role of methyltransferase inhibitors in clinical practice for lymphoma.
Main Methods:
- Review of existing literature on epigenetic alterations in lymphoma.
- Analysis of studies investigating DNMT inhibitors for Diffuse Large B-cell Lymphoma (DLBCL) and T-cell Lymphoma (TCL).
- Evaluation of EZH2 inhibitors' efficacy in relapsed/refractory Follicular Lymphoma (FL) with EZH2 mutations.
Main Results:
- DNMT inhibitors are explored for enhancing chemotherapy response in DLBCL or as monotherapy/combination therapy in TCL.
- Histone methyltransferase inhibitors show effectiveness in R/R FL patients with specific EZH2 mutations.
- Histone deacetylase (HDAC) inhibitors have a long-standing clinical presence in lymphoma treatment.
Conclusions:
- Epigenetic therapies, particularly methyltransferase inhibitors, are becoming increasingly important in lymphoma treatment.
- Targeting epigenetic derangements offers a promising strategy for managing difficult-to-treat lymphomas.
- New therapeutic options focusing on disease pathogenesis are crucial for improving patient outcomes.
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