Ezharmia (valemetostat)

For nearly twenty years, platinum-pemetrexed chemotherapy has persisted as the unchanged standard treatment; although recent progress in immunotherapy has modestly disrupted this therapeutic plateau, survival outcomes remain disappointingly limited...Preclinical and early clinical data demonstrate that EZH2 inhibitors-including tazemetostat, valemetostat, GSK126, EPZ011989, tulmimetostat, and novel PROTAC-based degraders such as MS1943-can suppress tumor progression, modulate the tumor immune microenvironment, and restore therapeutic sensitivity...Further understanding the dual canonical and non-canonical roles of EZH2 in tumor biology will be key to optimizing targeted and combinatorial treatment strategies. Future research should focus on translating EZH2 inhibition into clinical benefit, identifying predictive biomarkers of response, and exploring rational combinations with chemotherapy, targeted drugs, or immunotherapy to improve survival outcomes in mesothelioma patients.

Valemetostat, which inhibits EZH1/2, as well as tazemetostat in combination with other drugs have been subject of recent research. The purpose of this article is to review the role of EZH2 in normal B cell differentiation and in the pathogenesis of B-Cell lymphomas.

P1, N=60, Recruiting, Daiichi Sankyo | N=13 --> 60

P1, N=100, Active, not recruiting, Daiichi Sankyo Co., Ltd. | Trial completion date: Dec 2026 --> Dec 2027

Pharmacological inhibition of EZH2 using DS-3201 reproduced some of the molecular effects of viral infection, including increased mutp53 stability...Indeed, the inhibition of SIRT1 with EX-527 reversed mutp53 accumulation but restored c-Myc expression and increased extracellular IL-6 release...These results establish a mechanistic link between viral infection, epigenetic remodeling, and oncogenic dependency. They also suggest that targeting IL-6 signaling could represent a therapeutic vulnerability in HHV-6A-associated thyroid cancer, particularly in combination with SIRT1 inhibitors.

P2, N=900, Recruiting, Gustave Roussy, Cancer Campus, Grand Paris

An 80-year-old woman with relapsed nodal T-follicular helper cell lymphoma, not otherwise specified, developed severe watery diarrhea during valemetostat therapy...To the best of our knowledge, this is the first reported case of enhancer of zeste homolog 1 and 2 (EZH1/2) inhibitor-induced colitis. EZH1/2 inhibition may lead to T cell-mediated intestinal injury through epigenetic dysregulation; therefore, patients receiving EZH1/2 inhibitors who develop persistent diarrhea should undergo early endoscopic and histological evaluations.

P1, N=4, Not yet recruiting, Daiichi Sankyo Inc.

At the last follow-up, four patients were alive without disease, four were alive with disease, and three died due to progressive disease. Hence, valemetostat is a promising salvage therapy for relapsed adult T-cell leukemia/lymphoma after allo-HCT.

P2, N=900, Recruiting, Gustave Roussy, Cancer Campus, Grand Paris | Not yet recruiting --> Recruiting

P1/2, N=21, Completed, Daiichi Sankyo Inc.

P1/2, N=600, Not yet recruiting, Institut Gustave Roussy