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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01488565
Other study ID # 10/78
Secondary ID
Status Completed
Phase Phase 2
First received November 29, 2011
Last updated February 12, 2016
Start date December 2010
Est. completion date May 2015

Study information

Verified date February 2016
Source Peter MacCallum Cancer Centre, Australia
Contact n/a
Is FDA regulated No
Health authority Australia: Department of Health and Ageing Therapeutic Goods Administration
Study type Interventional

Clinical Trial Summary

Myelodysplastic Syndrome (MDS) is a disease of the bone marrow characterized by anemia,neutropenia, and thrombocytopenia (low red blood cell, white blood cell, and platelet counts). MDS patients with thrombocytopenia who fail standard therapies require regular platelet transfusions which are expensive and inconvenient, and are a risk for further serious bleeding complications. The new treatment of MDS using azacitidine has shown to increase the survival rate of MDS patients including to improve platelet production over time. However,in the early cycles of treatment with azacitidine,the low platelet counts tend to exacerbate before they provide any clinical benefit.

Eltrombopag is a drug designed to activate the thrombopoietin receptor. Eltrombopag has been able to increase platelet counts in healthy Thrombocytopenia Purpura (ITP), a disease where patients destroy their own platelets very rapidly and thus develop thrombocytopenia.

Eltrombopag is administered orally and is Therapeutic Goods Administration (TGA) approved for the treatment of thrombocytopenia in patients with chronic ITP who failed to respond to standard treatment.

This study is a single arm pilot study to evaluate the safety and tolerability of Eltrombopag in the treatment of low platelet counts in adult subjects with MDS treated using azacitidine This study also incorporates a correlative laboratory component designed to determined the mechanism of action of 5-azacitidine +/- Eltrombopag and to determine a baseline profile which may predict those most responsive. These studies will incorporate gene methylation and expression, and immunoprofiling.


Recruitment information / eligibility

Status Completed
Enrollment 25
Est. completion date May 2015
Est. primary completion date May 2014
Accepts healthy volunteers No
Gender Both
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Patients with low platelet count (<=150 x109/L)and in addition disease diagnosis of either MDS, or nonproliferative CMML or low marrow blast count AML not suitable for induction chemotherapy

- Age >18 years

- ECOG score 0-2 at screening

- Life expectancy =12 weeks

- Ability to comply with the adequate contraception in patients of childbearing potential.

Exclusion Criteria:

- Subjects with the diagnosis acute promyelocytic leukaemia

- Prior treatment with azacitidine or any other methyl-transferase inhibitor (e.g. decitabine)

- Prior treatment with eltrombopag, romiplostim, or other TPO-receptor agonist

- AML or MDS requiring cytoreductive therapy (eg hydroxyurea, ara-c, thioguanine etc) in the month prior to study entry

- Known uncontrolled medical conditions which may compromise participation in this study including but not limited to:

- Poorly controlled congestive heart failure: ejection fraction <30% measured in past 6 months) or NYHA class IV

- Arrhythmia known to increase the risk of thromboembolic events.

- Unstable angina or an ischaemic cardiac event requiring hospital admission in the previous 12 months.

- Unresolved GI disease that may significantly alter the absorption of eltrombopag

- Known pro-thrombotic condition as defined by a history =1 unprovoked deep venous thrombosis or pulmonary embolism, or any DVT/PE with a procoagulant condition screen suggesting the presence of a procoagulant condition (prothrombin gene mutation homozygosity, factor V leiden homozygosity, antithrombin deficiency, lupus anticoagulant syndrome).

- History of Ischaemic neurological event (TIA or stroke) within the preceding 2 years.

- Inadequate renal function (eGFR <30 ml/min by Cockcroft-Gault (C-G) formula, or as measured by 24 hour urinary creatinine clearance)

- Inadequate hepatic function:

- bilirubin =1.5xULN - =80µmol/L acceptable if attributed to haemolysis, ineffective erythropoiesis or iron overload). This applies also for patients with Gilbert's Syndrome.

- AST or ALT =2xULN (=3xULN acceptable if attributed to transfusion-associated iron overload)

- Patients with known liver cirrhosis.

- Other concurrent severe and/or uncontrolled medical conditions including a history of malignancy other than MDS/AML in the preceding 2 years requiring chemotherapy and/or radiotherapy. Non melanotic skin cancers requiring low dose local radiotherapy or topical agents are allowed on study if considered clinically stable or healed.

- Women who are pregnant or breast-feeding.

- Treatment with growth factors such as erythropoietin, GCSF or stem cell factor in the 21 days prior to commencement of study therapy.

- Active or uncontrolled infections.

- Subjects with known HIV infection.

- Has any other clinically important abnormalities as determined by the investigator that may interfere with his or her participation in or compliance with the study

- Bone marrow fibrosis that leads to an inability to aspirate marrow for quality cytological assessment, termed a "dry tap".

- Presence of any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule. This condition must be discussed with the patient prior to signing consent and registration in the trial.

- Splenomegaly >14cm on the screening ultrasound examination.

Study Design

Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment


Intervention

Drug:
Azacitidine and eltrombopag
Standard: azacitidine D1-5, 8&9, until loss of clinical benefit. Experimental: eltrombopag at a dose ranging from 50-300mg for 6 months, continuing only in those deriving clinical benefit.

Locations

Country Name City State
Australia Peter MacCallum Cancer Centre East Melbourne Victoria
Australia Cabrini Hospital Malvern Victoria

Sponsors (3)

Lead Sponsor Collaborator
Peter MacCallum Cancer Centre, Australia Celgene Corporation, GlaxoSmithKline

Country where clinical trial is conducted

Australia, 

Outcome

Type Measure Description Time frame Safety issue
Primary Number of events of non-haematological toxicities related to the combination of eltrombopag and azacitidine The number of events of Grade III/IV non-haematological toxicities will be measured based on the possibly, probably or definitely relatedness to the combination of eltrombopag and azacitidine At 6 cycles of therapy (approx 6 months) Yes
Secondary Number of patients with improved platelet counts and the dose at which this may be achieved. Approximately 2.5 years after the last accrued patient completes study treatment No
Secondary Correlation of the laboratory findings with the response of the combination of 5-azacitidine and eltrombopag in patients with MDS and low marrow blast count AML Approximately 2.5 years after last accrued patient completes study treatment No
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