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Multicenter, phase II study of decitabine for the first-line treatment of older patients with acute myeloid leukemia.

AbstractPURPOSE:
Older patients with acute myeloid leukemia (AML) have limited treatment options because of the lack of effectiveness and the toxicity of available therapies. We investigated the efficacy and toxicity of the hypomethylating agent decitabine as initial therapy in older patients with AML.
PATIENTS AND METHODS:
In this multicenter, phase II study, patients older than 60 years who had AML (ie, > 20% bone marrow blasts) and no prior therapy for AML were treated with decitabine 20 mg/m(2) intravenously for 5 consecutive days of a 4-week cycle. Response was assessed by weekly CBC and bone marrow biopsy after cycle 2 and after each subsequent cycle. Patients continued to receive decitabine until disease progression or an unacceptable adverse event occurred.
RESULTS:
Fifty-five patients (mean age, 74 years) were enrolled and were treated with a median of three cycles (range, one to 25 cycles) of decitabine. The expert-reviewed overall response rate was 25% (complete response rate, 24%). The response rate was consistent across subgroups, including in patients with poor-risk cytogenetics and in those with a history of myelodysplastic syndrome. The overall median survival was 7.7 months, and the 30-day mortality rate was 7%. The most common toxicities were myelosuppression, febrile neutropenia, and fatigue.
CONCLUSION:
Decitabine given in a low-dose, 5-day regimen has activity as upfront therapy in older patients with AML, and it has acceptable toxicity and 30-day mortality.
AuthorsAmanda F Cashen, Gary J Schiller, Margaret R O'Donnell, John F DiPersio
JournalJournal of clinical oncology : official journal of the American Society of Clinical Oncology (J Clin Oncol) Vol. 28 Issue 4 Pg. 556-61 (Feb 1 2010) ISSN: 1527-7755 [Electronic] United States
PMID20026803 (Publication Type: Clinical Trial, Phase II, Journal Article, Multicenter Study)
Chemical References
  • Antimetabolites, Antineoplastic
  • decitabine
  • Azacitidine
Topics
  • Aged
  • Aged, 80 and over
  • Antimetabolites, Antineoplastic (therapeutic use)
  • Azacitidine (analogs & derivatives, therapeutic use)
  • Female
  • Follow-Up Studies
  • Humans
  • Leukemia, Myeloid, Acute (drug therapy, mortality, pathology)
  • Male
  • Maximum Tolerated Dose
  • Middle Aged
  • Myelodysplastic Syndromes (drug therapy, pathology)
  • Neoplasm Recurrence, Local (drug therapy, mortality, pathology)
  • Neoplasm Staging
  • Prognosis
  • Survival Rate
  • Treatment Outcome

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