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Clinical Evaluation of Eltrombopag in Chronic Idiopathic Thrombocytopenic Purpura (ITP)

This study has been completed.
Sponsor:
Information provided by:
GlaxoSmithKline
ClinicalTrials.gov Identifier:
NCT00828750
First received: January 22, 2009
Last updated: October 31, 2011
Last verified: October 2011
History of Changes
Results First Received: September 15, 2011  
Study Type: Interventional
Study Design: Allocation: Non-Randomized;   Endpoint Classification: Safety/Efficacy Study;   Intervention Model: Single Group Assignment;   Masking: Open Label;   Primary Purpose: Treatment
Conditions: Idiopathic Thrombocytopenic Purpura
Purpura, Thrombocytopenic, Idiopathic
Intervention: Drug: Eltrombopag oral tablets

  Participant Flow
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Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
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Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
This study is an open-label, dose-adjustment extension study to evaluate the safety and efficacy of eltrombopag for the treatment of participants with idiopathic thrombocytopenic purpura (ITP) who had previously been enrolled in eltrombopag trial TRA108109 (NCT00540423).

Reporting Groups
  Description
Eltrombopag Participants took eltrombopag orally once daily in the fasted state at an individualized dose of 12.5 milligrams (mg), 25 mg, 37.5 mg, or 50 mg; the starting dose was the last dose in the prior eltrombopag study, TRA108109 (NCT00540423). Depending on the participant's platelet count (PC) at each visit, a dose modification guideline allowed participants to increase/reduce the dose or interrupt the eltrombopag treatment.

Participant Flow:   Overall Study
    Eltrombopag  
STARTED     19  
COMPLETED     15  
NOT COMPLETED     4  
Lack of Efficacy                 3  
Normal PC Remained While No Treatment                 1  



  Baseline Characteristics
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Reporting Groups
  Description
Eltrombopag Participants took eltrombopag orally once daily in the fasted state at an individualized dose of 12.5 milligrams (mg), 25 mg, 37.5 mg, or 50 mg; the starting dose was the last dose in the prior eltrombopag study, TRA108109 (NCT00540423). Depending on the participant's platelet count at each visit, a dose modification guideline allowed participants to increase/reduce the dose or interrupt the eltrombopag treatment.

Baseline Measures
    Eltrombopag  
Number of Participants  
[units: participants]
 		  19  
Age  
[units: Years]
Mean ± Standard Deviation 		  54.7  ± 13.57  
Gender  
[units: Participants]
 		 
Female     12  
Male     7  
Race/Ethnicity, Customized  
[units: participants]
 		 
Asian – Japanese Heritage     19  



  Outcome Measures
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1.  Primary:   Number of Participants Experiencing an Adverse Event (AE) and/or Serious Adverse Event (SAE) Within the Indicated Category   [ Time Frame: From Baseline (Day 1) to last dose of eltrombopag/early withdrawal visit (up to 981 days) ]
  Show Outcome Measure 1

2.  Secondary:   Percentage of Participants Achieving a Platelet Count Greater Than or Equal to 50 Giga Unit (10^9) Per Liter (Gi/L) and Less Than or Equal to 400 Gi/L   [ Time Frame: Baseline; Weeks 1, 2, 3, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 128, 132, and 136; and last visit/early withdrawal visit (up to Day 982) ]
  Show Outcome Measure 2

3.  Secondary:   Median Platelet Counts   [ Time Frame: Baseline; Weeks 1, 2, 3, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 128, 132, and 136; and last visit/early withdrawal visit (up to Day 982) ]
  Show Outcome Measure 3

4.  Secondary:   Percentage of Participants With a Given Maximum Number of Weeks of Continuous Platelet Count Evaluation Greater Than or Equal to 50 Gi/L and Greater Than or Equal to Twice the Baseline Count Categorized by Weeks on Study Medication (Med.)   [ Time Frame: From Baseline (Day 1) to last dose of eltrombopag/early withdrawal visit (up to 981 days) ]
  Show Outcome Measure 4

5.  Secondary:   Median Number of Maximum Continuous Weeks of Maintaining Platelet Counts Greater Than or Equal to 50 Gi/L and Greater Than or Equal to Twice the Baseline Count at Three-Month Intervals   [ Time Frame: 3, 6, 9, 12, 15, 18, 21, 24, 27, and 30 months (13, 26, 39, 52, 65, 78, 91, 104, 117, and 130 weeks) ]
  Show Outcome Measure 5

6.  Secondary:   Percentage of Participants Experiencing Any Bleeding Episode After Dosing With Study Medication   [ Time Frame: Baseline; Weeks 1, 2, 3, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 128, 132, and 136; and last visit/early withdrawal visit (up to Day 982) ]
  Show Outcome Measure 6

7.  Secondary:   Percentage of Participants With a Reduction in Use of Baseline Idiopathic Thrombocytopenic Purpura (ITP) Medication   [ Time Frame: From Baseline (Day 1) to last dose of eltrombopag/early withdrawal visit (up to 981 days) ]
  Show Outcome Measure 7

8.  Secondary:   Percentage of Participants Initiating Rescue Medication/Treatment During On-Therapy   [ Time Frame: From Baseline (Day 1) to last dose of eltrombopag/early withdrawal visit (up to 981 days) ]
  Show Outcome Measure 8


  Serious Adverse Events
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  Other Adverse Events
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  More Information
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Certain Agreements:  
Principal Investigators are NOT employed by the organization sponsoring the study.
There IS an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.
The agreement is:
unchecked The only disclosure restriction on the PI is that the sponsor can review results communications prior to public release and can embargo communications regarding trial results for a period that is less than or equal to 60 days. The sponsor cannot require changes to the communication and cannot extend the embargo.
unchecked The only disclosure restriction on the PI is that the sponsor can review results communications prior to public release and can embargo communications regarding trial results for a period that is more than 60 days but less than or equal to 180 days. The sponsor cannot require changes to the communication and cannot extend the embargo.


Limitations and Caveats
Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
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Results Point of Contact:  
Name/Title: GSK Response Center
Organization: GlaxoSmithKline
phone: 866-435-7343


No publications provided


Responsible Party: Cheri Hudson; Clinical Disclosure Advisor, GSK Clinical Disclosure
ClinicalTrials.gov Identifier: NCT00828750     History of Changes
Other Study ID Numbers: 111433
Study First Received: January 22, 2009
Results First Received: September 15, 2011
Last Updated: October 31, 2011
Health Authority: Japan: Ministry of Health, Labor and Welfare