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Blood, 1 October 2007, Vol. 110, No. 7, pp. 2302-2308. Prepublished online as a Blood First Edition Paper on June 27, 2007; DOI 10.1182/blood-2007-03-078576. This Article Full Text Full Text (PDF) All Versions of this Article: blood-2007-03-078576v1 110/7/2302    most recent Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Rights and Permissions Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Soriano, A. O. Articles by Garcia-Manero, G. Search for Related Content PubMed PubMed Citation Articles by Soriano, A. O. Articles by Garcia-Manero, G. Related Collections Neoplasia Chemokines, Cytokines, and Interleukins Clinical Trials and Observations Social Bookmarking                   What's this?  Previous Article  |  Table of Contents  |  Next Article  CLINICAL TRIALS AND OBSERVATIONS Safety and clinical activity of the combination of 5-azacytidine, valproic acid, and all-trans retinoic acid in acute myeloid leukemia and myelodysplastic syndrome Andres O. Soriano1, Hui Yang1, Stefan Faderl1, Zeev Estrov1, Francis Giles1, Farhad Ravandi1, Jorge Cortes1, William G. Wierda1, Souzanne Ouzounian1, Andres Quezada1, Sherry Pierce1, Elihu H. Estey1, Jean-Pierre J. Issa1, Hagop M. Kantarjian1, and Guillermo Garcia-Manero1 1 Department of Leukemia, University of Texas M. D. Anderson Cancer Center, Houston, TX The combination of a DNA hypomethylating agent with a histone deacetylase inhibitor has synergistic antileukemia activity and may restore sensitivity to all-trans retinoic acid (ATRA). We conducted a phase 1/2 study of the combination of 5-azacitidine (5-AZA), valproic acid (VPA), and ATRA in patients with acute myeloid leukemia or high-risk myelodysplastic syndrome. 5-AZA was administered subcutaneously at a fixed dose of 75 mg/m2 daily for 7 days. VPA was dose-escalated and given orally daily for 7 days concomitantly with 5-AZA. ATRA was given at 45 mg/m2 orally daily for 5 days, starting on day 3. A total of 53 patients were treated. Their median age was 69 years (range, 5-84 years). The maximum tolerated dose of VPA in this combination was 50 mg/kg daily for 7 days. Dose-limiting toxicity was reversible neurotoxicity. The overall response rate was 42%. In previously untreated older patients, the response rate was 52%. Median number of courses to response was 1 (range, 1-3 courses). Median remission duration was 26 weeks, and median survival has not been reached. A significant decrease in global DNA methylation and induction of histone acetylation were achieved. VPA blood levels were higher in responders (P < .005). In conclusion, the combination studied is safe and has significant clinical activity. This clinical trial was registered at www.clinicaltrials.gov as no. NCT00326170 [ClinicalTrials.gov] . CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this? This article has been cited by other articles: R. Gurion, L. Vidal, A. Gafter-Gvili, Y. Belnik, M. Yeshurun, P. Raanani, and O. Shpilberg 5-azacitidine prolongs overall survival in patients with myelodysplastic syndrome - a systematic review and meta-analysis Haematologica, February 1, 2010; 95(2): 303 - 310. [Abstract] [Full Text] [PDF] A. A. Lane and B. A. Chabner Histone Deacetylase Inhibitors in Cancer Therapy J. Clin. Oncol., November 10, 2009; 27(32): 5459 - 5468. [Abstract] [Full Text] [PDF] C. S. Mitsiades and K. C. 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