Phase II Eltrombopag in Chronic Lymphocytic Leukemia (CLL)

Sponsor

M.D. Anderson Cancer Center (Other)

Overall Status

Completed

CT.gov ID

NCT01168921

Collaborator

GlaxoSmithKline (Industry)

Enrollment

Location

Arm

136.1

Actual Duration (Months)

0.2

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

The goal of this clinical research study is to learn if eltrombopag can help to increase the number of platelets in patients with CLL. The safety of this drug will also be studied.

Condition or Disease	Intervention/Treatment	Phase
CLL Leukemia	Drug: Eltrombopag	Phase 2

Detailed Description

The Study Drug:

When the number of platelets in your body gets too low, it can cause bleeding, which may cause serious health problems and/or prevent you from receiving chemotherapy. Eltrombopag is designed to act like a protein in your body that helps make platelets. This may help increase your platelet counts.

Study Drug Administration:

You will take pills of the study drug by mouth 1 time each day on an empty stomach (1 hour before or 2 hours after a meal). You should take the pills with 1 cup (8 ounces) of water. You should wait at least 4 hours between taking eltrombopag and eating foods with calcium (dairy products and/or juices with added calcium) or taking drugs/supplements with iron, calcium, aluminum, magnesium, selenium and/or zinc. Other drugs may also affect eltrombopag. Be sure to tell your doctor about any drugs and/or supplements you may be taking.

During your study visits, your doctor will check your platelet counts to see if they improve. If they do not improve, your dose of study drug may be increased. Your doctor will instruct you on each dose of eltrombopag you should take.

Do not take more than 1 dose of eltrombopag on any one day. If you forget to take a dose, you should skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

Study Visits:

Each study "cycle" will be 28 days.

Each week during Cycle 1, then every 2 weeks during Cycles 2 and 3:

You will have a physical exam, including measurement of your vital signs.
You will be asked about any bleeding that may have occurred since the last study visit.
Blood (about 1 tablespoon) will be drawn for routine tests.

On Day 1 (+/- 7 days) of Cycles 4 and beyond:

You will have a physical exam.
You will be asked about any bleeding that may have occurred since the last study visit.
Blood (about 1 tablespoon) will be drawn for routine tests.
You will also have a bone marrow aspirate/biopsy to check the status of the disease and to check your platelet counts. This test will only be performed every 3 cycles.

Length of Study Participation:

You may continue taking the study drug for as long as the doctor thinks it is in your best interest. You will no longer be able to take the study drug if you require other treatment for CLL or if intolerable side effects occur.

Follow-Up:

After you stop taking eltrombopag for any reason, your platelet counts may drop. This may increase your risk of bleeding. Blood (about 1 tablespoon) will be drawn each week for 4 weeks to check your platelet counts.

This is an investigational study. Eltrombopag is FDA approved and commercially available for use in chronic immune thrombocytopenic purpura (ITP - severe bleeding due to platelet destruction by the immune system). The use of this drug in patients with CLL is investigational.

Up to 36 patients will take part in this study. All will be enrolled at MD Anderson.

Study Design

Study Type:

Interventional

Actual Enrollment :

24 participants

Allocation:

N/A

Intervention Model:

Single Group Assignment

Masking:

None (Open Label)

Primary Purpose:

Treatment

Official Title:

A Phase II Trial of Eltrombopag for Patients With Chronic Lymphocytic Leukemia (CLL) and Thrombocytopenia

Actual Study Start Date :

Nov 3, 2010

Actual Primary Completion Date :

Mar 7, 2022

Actual Study Completion Date :

Mar 7, 2022

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Eltrombopag Starting dose 75 mg by mouth (PO) daily for 28 day cycle.	Drug: Eltrombopag Starting dose 75 mg by mouth (PO) daily for 28 day cycle Other Names: Promacta

Arm

Intervention/Treatment

Experimental: Eltrombopag

Starting dose 75 mg by mouth (PO) daily for 28 day cycle.

Drug: Eltrombopag

Starting dose 75 mg by mouth (PO) daily for 28 day cycle

Other Names:

Promacta

Outcome Measures

Primary Outcome Measures

Number of Participants with Overall Response [3 Months]
Overall response rate (OR), which is defined as the composite of complete response (CR) and major response (MR). CR is defined as an increase in platelets (PLT) count to ≥100K/µL for at least 4 weeks. MR is defined as an increase in PLT count from <20K/µL to ≥20K/µL and by at least 100% for at least 8 weeks; or for participants starting with >20K/µL platelets, absolute increase in PLT count of ≥30K/µL for at least 4 weeks: or PLT transfusion independence (no PLT transfusion) for at least 4 weeks. Overall response is best response achieved over first 3 months of treatment.

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years and Older

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Inclusion Criteria:

Diagnosis of chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL)
Age >/= 18 years
PLT transfusion-dependent, defined as need for transfusion to maintain PLT count

/=20K/µL, or the average of two (non-transfused) PLT counts taken within 2 weeks of the screening period </=50K/µL, with no individual count >55K/µL

Patients with ITP must have failed at least 1 prior treatment for ITP including one of the following: corticosteroids, rituximab, splenectomy, cyclosporine
At least 3 weeks must have elapsed since the last chemotherapy treatment for CLL
ECOG performance status (PS) </=2
Adequate liver function (total bilirubin </=2* upper limit normal (ULN); ALT </=2.5* ULN)
Adequate renal function (serum creatinine Cr </=2.2 mg/dL)
For patients with ITP on corticosteroids or cyclosporine, dose of corticosteroids or cyclosporine must be stable for 2 weeks prior to enrollment and planned to be tapered in patients responding to eltrombopag
Able to provide informed consent

Exclusion Criteria:

Concurrent chemotherapy for CLL
Diagnosis of Richter's transformation
Uncontrolled autoimmune hemolytic anemia i.e. patients with AIHA that is not controlled with treatment such as corticosteroids or cyclosporine. This would include patients who require PBRC transfusions or who do not have a stable hemoglobin (HGB) due to ongoing hemolysis.
Concurrent treatment for ITP (except for corticosteroids and cyclosporine)
Diagnosis of myelodysplastic syndrome or acute myeloid leukemia
Active infection or significant medical illness as determined by the treating physician
Treatment with thrombomimetic agents in the past 3 months (rTPO, PEG-rHuMGDF, Nplate or Promacta)
Pregnant or breast feeding subjects and subjects not willing to use adequate contraceptive precautions