Eltrombopag and Romiplostim Used Alternatively in Patients With Immune Thrombopenia (ITP): Efficacy and Safety.

Study Overview
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Brief Summary
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TPO-r Switch is a retrospective study of the patients affected by Immune Thrombopenia (ITP) who received alternatively romiplostim and eltrombopag.

Detailed Description
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Thrombopoietin mimetics agents are available since 5 years in France through clinical trials first and then after their license. Two drugs are used: romiplostim and eltrombopag. These molecules have the same receptor on the megacaryocyte and induce the same stimulation of this cell leading to the differentiation and the proliferation into platelets. But romiplostim and eltrombopag have 2 different characteristics: the way of administration (oral for eltrombopag and subcutaneous for romiplostim) and the binding site to the C-MPL receptor on megacaryocyte. The aim of this study is to describe ITP patients who received these two drugs alternatively in order to know if there is a benefit for switching these molecules in clinical practice.

Official Title
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Eltrombopag and Romiplostim Used Alternatively in Patients With Immune Thrombopenia (ITP).

Conditions
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Immune Thrombocytopenia, Thrombopoietin Receptor Agonist

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Subject has a diagnosis of ITP according to the American Society of Hematology guidelines (Rodeghiero et al, 2009). Subject is equal to or greater than 18 years of age. Before any study-specific procedure, the appropriate written informed consent must be obtained. Subject receiving romiplostim and eltrombopag alternatively Available follow-up of 2 months at least for each period Exclusion Criteria: - Secondary ITP e.g: thrombopenia related to hepatitis C, HIV, Chronic Lymphocytic Leukemia

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Romiplostim and eltrombopag in ITP<br>ITP patients who received alternatively romiplostim or eltrombopag with at least two months of follow-up for each period. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Rate of efficacy after switching from one TPO mimetics to a second one. | The primary outcome of this study is to know if switching from one TPO mimetics to a second one in ITP patients lead to a better efficacy in a significative proportion of patients. | 2 months minimun | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Rate of patients with an adverse events who have a benefit after switching. | Some ITP patients under TPO-r mimetics have some adverse events, the secondary outcome of this study is to evaluate the benefit to switch from one TPO-r mimetics to a second one in these cases. | 6 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Immune Thrombocytopenia, Thrombopoietin receptor agonist