Myelodysplastic Syndrome Clinical Trial
Omacetaxine + Azacitidine in Untreated Patients With High Grade MDS
This study will treat patients with previously untreated high grade myleodysplastic syndromes (MDS) with both omacetaxine mepesuccinate and azacitidine.
This is an open-label, phase I/II study for previously untreated patients with high grade MDS using omacetaxine and azacitidine with a small expansion cohort for relapsed and refractory MDS patients. Phase I features dose escalation, where patients will be assigned to one of three cohorts to receive different doses of omacetaxine with the standard dose and schedule of azacitidine, over a 28 day cycle. Phase II features the maximum tolerated dose from the Phase 1 study. An additional expansion cohort of 10 MDS patients who have failed to respond to or responded and relapsed after at least one line of therapy containing a hypomethylating agent therapy will also be accrued.
A subject will be eligible for study participation if he/she meets the following criteria within 14 days prior to the first day of therapy (bone marrow biopsy can be performed 28 days prior to the first day of therapy).
Subject must have confirmation of high grade MDS (MDS with excess blasts by WHO criteria) or chronic myelomonocytic leukemia with greater than 5% bone marrow blasts
Subjects in the newly-diagnosed Phase 2 cohort must have received no prior treatment with a hypomethylating agent for MDS. Subjects in the relapsed/refractory Phase 2 cohort must have received at least 1 prior line of an HMA-containing regimen. "Refractory" is defined as having received at least four cycles of any HMA or HMA-containing regimen with >5-19% bone marrow blasts. "Relapsed" is defined as having >5-19% bone marrow blasts after having achieved a morphologic remission (≤5% bone marrow blasts) after at least one cycle of any HMA or HMA-containing regimen.
Subject must be ≥ 18 years of age
Subject must have a projected life expectancy of at least 12 weeks
Subject must have an Eastern Cooperative Oncology Group (ECOG) Performance status of ≤2
Subject must have adequate renal function as demonstrated by a calculated creatinine clearance ≥ 30 mL/min; determined via urine collection for 24-hour creatinine clearance or by the Cockcroft Gault formula
Subject must have adequate liver function as demonstrated by:
aspartate aminotransferase (AST) ≤ 3.0 × ULN
alanine aminotransferase (ALT) ≤ 3.0 × ULN
direct bilirubin ≤ 3.0 × ULN
Non-sterile male subjects must use contraceptive methods with partner(s) from time of enrollment and continuing up to 90 das after the last dose of study drug. Male subjects must agree to refrain from sperm donation from initial study drug administration until 90 days after the last dose of study drug.
Female subjects must agree to use two reliable forms of contraception simultaneously or to practice complete abstinence from heterosexual intercourse during the following time periods related to this study: 1) for at least 28 days before starting omacetaxine; 2) throughout the entire duration of omacetaxine treatment; 3) during dose interruptions; and 4) for at least 90 days after omacetaxine discontinuation.
Subject must voluntarily sign and date an informed consent, approved by an Institutional Review Board (IRB), prior to the initiation of any screening or study-specific procedures.
A subject will not be eligible for study participation if he/she meets any of the following criteria:
Subject is known to be positive for HIV. HIV testing is not required.
Subject is known to be positive for hepatitis B or C infection with the exception of those with an undetectable viral load. Hepatitis B or C testing is not required and subjects with serologic evidence of prior vaccination to HBV (i.e., HBs Ag, anti-HBs+ and anti-HBc-) may participate.
Subject has any history of clinically significant condition(s) that in the opinion of the investigator would adversely affect his/her participating in this study including, but not limited to:
New York Heart Association heart failure > class 2
Renal, neurologic, psychiatric, endocrine, metabolic, immunologic, hepatic, cardiovascular disease, or bleeding disorder independent of leukemia
Subject exhibits evidence of uncontrolled systemic infection requiring therapy (viral, bacterial or fungal). Patients on antibiotics with controlled systemic symptoms will not be excluded.
Subject has uncontrolled diabetes
Subject has had a recent major hemorrhage or has a bleeding diathesis associated with a high risk of bleeding
Pregnant and breastfeeding females.
Subject has a history of other malignancies prior to study entry, except for:
Adequately treated in situ carcinoma of the breast or cervix uteri
Basal cell carcinoma of the skin or localized squamous cell carcinoma of the skin
Prostate cancer with no plans for therapy of any kind
Previous malignancy confined and surgically resected (or treated with other modalities) with curative intent.
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