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Omacetaxine mepesuccinate

Phase 2

Chronic Myeloid Leukemia | Small molecule | Oncology |Teva Pharmaceutical Industries Limited|Last Updated: Dec 28, 2021

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials2
Total Enrollment203

FDA Designations

No designations recorded

Clinical trial landscape

Omacetaxine mepesuccinate · 3 trials · 3 indications

Phase 2 2Phase 1 1
NCT00462943Open Label Study of Subcutaneous Homoharringtonine (Omacetaxine Mepesuccinate) in Patients With Advanced CMLChronic Myeloid Leukemia
COMPLETED100 Analytics
NCT00375219Homoharringtonine (Omacetaxine Mepesuccinate) in Treating Patients With Chronic Myeloid Leukemia (CML) With the T315I BCR-ABL Gene MutationChronic Myeloid Leukemia
COMPLETED103 Analytics
PHASE2COMPLETED
Open Label Study of Subcutaneous Homoharringtonine (Omacetaxine Mepesuccinate) in Patients With Advanced CML
Chronic Myeloid LeukemiaUnlock trial analytics
PHASE2COMPLETED
Homoharringtonine (Omacetaxine Mepesuccinate) in Treating Patients With Chronic Myeloid Leukemia (CML) With the T315I BCR-ABL Gene Mutation
Chronic Myeloid LeukemiaUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants Achieving an Overall Hematologic Response by Subpopulation and Total Population
Day 1 up to 6 months

Subpopulations reflect chronic myeloid leukemia (CML) phases at the time of enrollment: chronic, accelerated, and blast phase. Primary endpoints as adjudicated by the Data Monitoring Committee were used for the primary analyses. Overall hematologic response for chronic phase participants includes confirmed complete hematologic response (CHR). Overall hematologic response for accelerated or blast phase participants includes confirmed complete hematologic response (CHR), no evidence of leukemia (NEL), or return to chronic phase (RCP). Hematologic response must last \>= 8 weeks to be considered meaningful. Response rates by disease phase were examined relative to an a priori value of 2.5% using a one-sided lower 95% exact binomial confidence limit. If the lower limit from the one-sided lower 95% confidence limit exceeds 2.5%, the observed response rate will have exceeded the minimum threshold required to demonstrate efficacy.

Percentage of Participants Achieving a Major Cytogenetic Response by Subpopulation and Total Population
Day 1 up to 9 months

Subpopulations reflect chronic myeloid leukemia (CML) phases at the time of enrollment: chronic, accelerated, and blast phase. Primary endpoints as adjudicated by the Data Monitoring Committee were used for the primary analyses. Major cytogenetic response includes complete or partial response. Both confirmed and unconfirmed major cytogenetic response is considered meaningful. Unconfirmed response is based on a single bone marrow cytogenetic evaluation for participants where a confirmatory evaluation is not available. Complete response shows 0% Philadelphia chromosome positive (Ph+) cells. A partial response shows \>0% - 35% Ph+ cells. Response rates by disease phase were examined relative to an a priori value of 2.5% using a one-sided lower 95% exact binomial confidence limit. If the lower limit from the one-sided lower 95% confidence limit exceeds 2.5%, the observed response rate will have exceeded the minimum threshold required to demonstrate efficacy.

Number of Participants With Treatment-Emergent Adverse Events (TEAEs) by Subpopulation and Total
up to 4 years

TEAE are any untoward events that were newly occurring or worsening from Baseline. Treatment related toxicity was considered by the investigator to be unrelated, possibly, probably or unknown related to study drug. Severity was graded according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v3.0 on the following scale: Grade 1 = mild, Grade 2 = moderate, Grade 3 = severe, Grade 4 = life-threatening, Grade 5 = death. A serious adverse event (SAE) is any untoward medical occurrence that is fatal or life-threatening; results in persistent or significant disability or incapacity; requires or prolongs in-patient hospitalization; is a congenital anomaly/birth defect in the offspring of a patient; and conditions not included in the above that may jeopardize the patient or may require intervention to prevent one of the outcomes listed above. A participant is only counted once in each category (at worst severity or strongest relationship).

Maximum observed plasma drug concentrations (Cmax)
0,15, 30, and 45 minutes and 1, 2, 4, 8, 12, 24, 32, 48, 72, 96,120, 144, and 168 hours post dose
Time to Reach Maximum Observed Plasma Drug Concentration (Tmax)
0,15, 30, and 45 minutes and 1, 2, 4, 8, 12, 24, 32, 48, 72, 96,120, 144, and 168 hours post dose
Area under the plasma concentration by time curve (AUC) from time 0 to infinity (AUC0-∞)
0,15, 30, and 45 minutes and 1, 2, 4, 8, 12, 24, 32, 48, 72, 96,120, 144, and 168 hours post dose
Area under the Curve from Time Zero to the Time of the Last Measurable Drug Concentration (AUC0-t)
0,15, 30, and 45 minutes and 1, 2, 4, 8, 12, 24, 32, 48, 72, 96,120, 144, and 168 hours post dose

AUC (0-t)= Area under the plasma concentration versus time curve from time zero (pre-dose) to time of last quantifiable concentration (0-t)

Terminal rate constant (λz) and associated half-life (t½)
0,15, 30, and 45 minutes and 1, 2, 4, 8, 12, 24, 32, 48, 72, 96,120, 144, and 168 hours post dose
Percentage extrapolation calculated as (AUC0-∞-AUC0-t)/(AUC0-∞)x100
0,15, 30, and 45 minutes and 1, 2, 4, 8, 12, 24, 32, 48, 72, 96,120, 144, and 168 hours post dose
Apparent plasma clearance (CL/F)
0,15, 30, and 45 minutes and 1, 2, 4, 8, 12, 24, 32, 48, 72, 96,120, 144, and 168 hours post dose
Apparent volume of distribution (Vz/F)
0,15, 30, and 45 minutes and 1, 2, 4, 8, 12, 24, 32, 48, 72, 96,120, 144, and 168 hours post dose

Secondary Endpoints

Percentage of Participants in Each Cytogenetic Response Category Representing the Degree of Suppression of the Philadelphia Chromosome (Ph+)
Day 1 up to Month 9
Percentage of Participants With Major Molecular Response (MMR) Representing the Degree of Suppression of BCR-ABL Transcript Levels Using the Housekeeping Gene GUS
Day 1 up to Month 6
Percentage of Participants With Major Molecular Response (MMR) Representing the Degree of Suppression of BCR-ABL Transcript Levels Using the Housekeeping Gene ABL
Day 1 up to Month 6
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
OMAEXPERIMENTALOmacetaxine mepesuccinate (OMA) Induction: 1.25mg/m\^2 subcutaneously twice daily for 14 consecutive days, every 28 days for up to six cycles. Omacetaxine mepesuccinate (OMA) Maintenance: 1.25mg/m\^2 subcutaneously twice daily for 7 consecutive days, every 28 days for up to 24 months.
omacetaxineEXPERIMENTALTreatment was the same for all cohorts: induction therapy was subcutaneous (SC) administration of omacetaxine at 1.25 mg/m\^2 twice a day (BID), administered for 14 consecutive days every 28 (±3) days for up to 6 cycles. Maintenance therapy was subcutaneous (SC) administration of omacetaxine at 1.25 mg/m\^2 twice a day (BID), administered for 7 consecutive days every 28 (±3) days for up to 3 years.
omacetaxine mepesuccinateEXPERIMENTALPeriod A: 7-day pharmacokinetic assessment period in which all patients will be administered a single subcutaneous radiolabeled dose of 1.25-mg/m2 omacetaxine. Period B: omacetaxine will be administered as an sc injection at a dosage of 1.25 mg/m2 twice daily for 7 days (patients with solid tumors) or 14 days (patients with hematologic malignancies) of every 28-day cycle for up to 6 cycles.

Interventions

NameTypeDescription
Omacetaxine mepesuccinateDRUGInduction: 1.25mg/m\^2 subcutaneously twice daily for 14 consecutive days, every 28 days. Maintenance: 1.25mg/m\^2 subcutaneously twice daily for 7 consecutive days, every 28 days. Response targets during induction vary by chronic myeloid leukemia (CML) subclass (chronic, accelerated, or blast phase). Participants will complete at least one cycle (14 days treatment of a 28 day cycle) of induction therapy before changing to maintenance therapy. Participants not demonstrating evidence of clinical response after 6 induction cycles will be considered for removal from the study.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites29

Inclusion Criteria: * Male or female patients, age 18 years or older * Philadelphia chromosome (Ph) positive chronic myelogenous leukemia in either chronic, accelerated, or blast phase * Patients will have either failed, demonstrated intolerance, or a combination of prior failure and intolerance, t...

Countries:United StatesCanadaFranceGermanyHungaryIndiaItalyPolandSingaporeUnited KingdomNetherlands
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Frequently asked questions about Omacetaxine mepesuccinate

What is Omacetaxine mepesuccinate used for?

Omacetaxine mepesuccinate is used for hematologic malignancies, specifically chronic myeloid leukemia (CML). It is being studied in patients with CML who have the T315I BCR-ABL gene mutation and in those with advanced CML. The drug is administered subcutaneously and is currently in Phase 2 clinical development.

What does Omacetaxine mepesuccinate target?

Omacetaxine mepesuccinate targets the BCR-ABL gene mutation, particularly the T315I mutation, in chronic myeloid leukemia. It is a small molecule that inhibits protein synthesis, which can lead to apoptosis in cancer cells. The drug is being investigated for its efficacy in patients with this specific genetic alteration.

Who makes Omacetaxine mepesuccinate?

Omacetaxine mepesuccinate is developed by Teva Pharmaceutical Industries Limited, a company traded under the ticker TEVA. Teva is conducting clinical trials to evaluate the drug's safety and efficacy in treating chronic myeloid leukemia and other hematologic malignancies.

What phase is Omacetaxine mepesuccinate in?

Omacetaxine mepesuccinate is in Phase 2 clinical development. It has completed two Phase 2 trials in chronic myeloid leukemia, with a total enrollment of 203 patients. The drug is investigational and has not been approved by regulatory authorities for any indication.

What clinical trials is Omacetaxine mepesuccinate in?

Omacetaxine mepesuccinate has completed two Phase 2 trials: NCT00375219, studying the drug in CML patients with the T315I BCR-ABL mutation, and NCT00462943, an open-label study in patients with advanced CML. Both trials enrolled over 100 patients each and were conducted across multiple countries.

Is Omacetaxine mepesuccinate the same as homoharringtonine?

Yes, Omacetaxine mepesuccinate is also known as homoharringtonine. Clinical trials refer to the drug by both names, with titles such as 'Homoharringtonine (Omacetaxine Mepesuccinate) in Treating Patients With Chronic Myeloid Leukemia.' This alternative name is used interchangeably in research literature.