The purpose of this study is to test the safety of vorinostat (Zolinza) and azacitidine (Vidaza) when combined with gemtuzumab ozogamicin (GO) at different dose levels. These drugs increase the effect of GO against leukemia cells in the test tube, but we don't know yet whether they also increase the anti-leukemia effect of GO in people.
PRIMARY OBJECTIVES: I. Determine the vorinostat dose with the most favorable efficacy and toxicity when combined with azacitidine and GO. SECONDARY OBJECTIVES: I. Describe the complete response (CR)/ CR with inadequate recovery (CRi) rate after a total of 6 cycles of therapy. II. Describe the disease-free survival of patients that achieve CR/CRi. III. Determine whether acute myeloid leukemia (AML) characteristics associated with preclinical GO efficacy predict for clinical benefit, and assess whether differentiation-inducing agents modulate these characteristics and lower the apoptotic threshold for calicheamicin-gamma1-induced cytotoxicity (in vitro correlative and mechanistic studies). OUTLINE: This is phase I, dose-escalation study of vorinostat followed by a phase II study. Patients receive vorinostat orally (PO) on days 1-9, azacitidine subcutaneously (SC) or intravenously (IV) over 10-40 minutes on days 1-7, and gemtuzumab ozogamicin IV over 2 hours on day 4 and 8. Treatment repeats every 21 days for up to 12 courses in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up every 3 months for 3 years.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
52
Stanford University Hospitals and Clinics
Stanford, California, United States
Harrison HealthPartners Hematology and Oncology-Bremerton
Bremerton, Washington, United States
Fred Hutchinson Cancer Research Center
Seattle, Washington, United States
University of Washington Medical Center
Seattle, Washington, United States
Number of Participants With Dose-limiting Toxicity (Phase I)
Time frame: 42 days
Number of Participants With Dose-limiting Toxicity After the Vorinostat Dose
Time frame: Up to 3 years
Number of Participants With Complete Remission
Efficacy Defined as Best Response Achieved During Study Treatment Measured by Complete Remission (CR) Rate
Time frame: up to 3 years
Disease Relapse
Time frame: up to 2 years
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