Sponsor study identifier
observational
100
1 country
1
Study Start
January 1, 2020
Actual (reported)Primary Completion
August 1, 2022
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
December 2022
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Thrombopoietin Receptor Agonists (TPO-ra) are novel treatments for patients with refractory Primary Immune Thrombocytopenia (ITP). Rh-TPO and eltrombopag increase the number of platelets through different mechanism. If there is cross-resistance between 2 drugs for the treatment of adult ITP is still no answer. The purpose of this study is to investigate the efficacy and safety of switching eltrombopag and Rh-TPO in adults with ITP.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
December 2022
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
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Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
December 28, 2019
Actual (reported)January 1, 2020
Actual (reported)January 2, 2020
Actual (reported)October 20, 2020
Actual (reported)August 1, 2022
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
December 2022
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Response Rate at 6 Weeks After Switching
The percentage of patients who have reached platelet count ≥ 50×10\^9/L at 6 weeks after switching.
6 weeks
Treatments Associated Adverse Events
6 weeks
Reasons of Switching
6 weeks
Number of Participants With Bleeding Events
6 weeks
TOR (Time to Response)
6 weeks
DOR (Duration of Response)
6 weeks
Patients who fail previous steroids and eltrombopag and then switch to Rh-TPO will be enrolled. The reason for switch will be recorded. Patients will be given rh-TPO 300 U/kg once daily for 21 days. Rh-TPO will be terminated any time the platelet counts increased above 100 × 10\^9/L. The efficacy, safety, and patient/physician preference will be assessed.
Patients who fail previous steroids and rh-TPO and then switch to eltrombopag will be enrolled. The reason for switch will be recorded. Patients will be given eltrombopag 50mg once daily for 6 weeks. Eltrombopag will be terminated any time the platelet counts increased above 300× 10\^9/L.The efficacy, safety, and patient/physician preference will be assessed.
Patients will be given eltrombopag 50mg once daily for 6 weeks.
Patients will be given rh-TPO 300 U/kg once daily for 21 days.
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
adult ITP patients
Peking University Institute of Hematology
Beijing, Beijing Municipality, 100044, China
Neunert C, Lim W, Crowther M, Cohen A, Solberg L Jr, Crowther MA; American Society of Hematology. The American Society of Hematology 2011 evidence-based practice guideline for immune thrombocytopenia. Blood. 2011 Apr 21;117(16):4190-207. doi: 10.1182/blood-2010-08-302984. Epub 2011 Feb 16.
Provan D, Stasi R, Newland AC, Blanchette VS, Bolton-Maggs P, Bussel JB, Chong BH, Cines DB, Gernsheimer TB, Godeau B, Grainger J, Greer I, Hunt BJ, Imbach PA, Lyons G, McMillan R, Rodeghiero F, Sanz MA, Tarantino M, Watson S, Young J, Kuter DJ. International consensus report on the investigation and management of primary immune thrombocytopenia. Blood. 2010 Jan 14;115(2):168-86. doi: 10.1182/blood-2009-06-225565. Epub 2009 Oct 21.
Xiao Hui Zhang, MD
Peking University People's Hospital
100 participants (actual enrollment reported by the registry).
First Submitted
December 28, 2019
First Posted
January 2, 2020
Study Start
January 1, 2020
Actual (reported)Eltrombopag for Chemotherapy-induced Thrombocytopenia
Contact the study team to confirm eligibility.
Ghanima W, Godeau B, Cines DB, Bussel JB. How I treat immune thrombocytopenia: the choice between splenectomy or a medical therapy as a second-line treatment. Blood. 2012 Aug 2;120(5):960-9. doi: 10.1182/blood-2011-12-309153. Epub 2012 Jun 26.
Deutsch VR, Tomer A. Advances in megakaryocytopoiesis and thrombopoiesis: from bench to bedside. Br J Haematol. 2013 Jun;161(6):778-93. doi: 10.1111/bjh.12328. Epub 2013 Apr 18.
Kuter DJ. The biology of thrombopoietin and thrombopoietin receptor agonists. Int J Hematol. 2013 Jul;98(1):10-23. doi: 10.1007/s12185-013-1382-0. Epub 2013 Jul 3.
Bussel JB, Lakkaraja M. Thrombopoietic agents: there is still much to learn. Presse Med. 2014 Apr;43(4 Pt 2):e69-78. doi: 10.1016/j.lpm.2014.02.008. Epub 2014 Mar 27.
Wormann B. Clinical indications for thrombopoietin and thrombopoietin-receptor agonists. Transfus Med Hemother. 2013 Oct;40(5):319-25. doi: 10.1159/000355006. Epub 2013 Sep 11.
Wang S, Yang R, Zou P, Hou M, Wu D, Shen Z, Lu X, Li Y, Chen X, Niu T, Sun H, Yu L, Wang Z, Zhang Y, Chang N, Zhang G, Zhao Y. A multicenter randomized controlled trial of recombinant human thrombopoietin treatment in patients with primary immune thrombocytopenia. Int J Hematol. 2012 Aug;96(2):222-8. doi: 10.1007/s12185-012-1124-8. Epub 2012 Jun 30.
Erickson-Miller CL, Delorme E, Tian SS, Hopson CB, Landis AJ, Valoret EI, Sellers TS, Rosen J, Miller SG, Luengo JI, Duffy KJ, Jenkins JM. Preclinical activity of eltrombopag (SB-497115), an oral, nonpeptide thrombopoietin receptor agonist. Stem Cells. 2009 Feb;27(2):424-30. doi: 10.1634/stemcells.2008-0366.
Erhardt JA, Erickson-Miller CL, Aivado M, Abboud M, Pillarisetti K, Toomey JR. Comparative analyses of the small molecule thrombopoietin receptor agonist eltrombopag and thrombopoietin on in vitro platelet function. Exp Hematol. 2009 Sep;37(9):1030-7. doi: 10.1016/j.exphem.2009.06.011. Epub 2009 Jul 24.
Gonzalez-Porras JR, Godeau B, Carpenedo M. Switching thrombopoietin receptor agonist treatments in patients with primary immune thrombocytopenia. Ther Adv Hematol. 2019 May 9;10:2040620719837906. doi: 10.1177/2040620719837906. eCollection 2019.
Cantoni S, Carpenedo M, Mazzucconi MG, De Stefano V, Carrai V, Ruggeri M, Specchia G, Vianelli N, Pane F, Consoli U, Artoni A, Zaja F, D'adda M, Visentin A, Ferrara F, Barcellini W, Caramazza D, Baldacci E, Rossi E, Ricco A, Ciminello A, Rodeghiero F, Nichelatti M, Cairoli R. Alternate use of thrombopoietin receptor agonists in adult primary immune thrombocytopenia patients: A retrospective collaborative survey from Italian hematology centers. Am J Hematol. 2018 Jan;93(1):58-64. doi: 10.1002/ajh.24935. Epub 2017 Nov 9.
Cai X, Fu H, Zhao X, Lu J, Jiang Q, Chang Y, Huang X, Zhang X. Switching between eltrombopag and recombinant human thrombopoietin in patients with immune thrombocytopenia: an observational study. Chin Med J (Engl). 2022 Oct 5;135(19):2344-2350. doi: 10.1097/CM9.0000000000002346.
Primary Completion
August 1, 2022
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
December 2022
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Last Updated
October 20, 2020
Results First Posted
October 20, 2020
Record last verified: 2020-10
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Source: ClinicalTrials.gov.
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