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Potential role of histone deacetylase inhibitors in mesothelioma: clinical experience with suberoylanilide hydroxamic acid.

Author(s): Krug LM, Curley T, Schwartz L, Richardson S, Marks P, Chiao J, Kelly WK

Affiliation(s): Thoracic Oncology Service , Memorial Sloan-Kettering Cancer Center and Joan and Sanford Weill Medical College of Cornell University, New York, NY 10021, USA. krugl@mskcc.org

Publication date & source: 2006-01, Clin Lung Cancer., 7(4):257-61.

Publication type: Clinical Trial, Phase I

BACKGROUND: Histone deacetylase inhibitors are a novel class of therapeutic agents that inhibit deacetylate histones and other proteins involved in the regulation of gene expression and cell cycle progression. Phase I trials of intravenous and oral formulations of one such agent, vorinostat (suberoylanilide hydroxamic acid [SAHA]), have shown that it is safe and tolerable, that it inhibits histone deacetylation in peripheral blood mononuclear cells, and that it has a broad range of antitumor activity. PATIENTS AND METHODS: Thirteen patients with mesothelioma were included in a phase I trial of oral SAHA. All but one had previously been treated with chemotherapy. RESULTS: Four patients completed > or = 6 cycles of therapy; 2 patients demonstrated a partial response. The toxicities in this cohort of patients were similar to those observed in the entire phase I trial: primarily fatigue, dehydration, nausea, and vomiting. CONCLUSION: Given the dearth of treatment options for patients with advanced mesothelioma who have progressed after first-line chemotherapy, these results are encouraging. A placebo-controlled, randomized phase III study of oral SAHA is now open for patients with mesothelioma in whom treatment with pemetrexed has failed.

Page last updated: 2006-11-04

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