rhTPO Combining Rituximab Versus Low-dose Rituximab in Management of ITP

Idiopathic Thrombocytopenic Purpura Clinical Trial

Official title:

Recombinant Human Thrombopoietin in Combination With Rituximab Versus Low-dose Rituximab for the Treatment of Refractory ITP.

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01525836
• Other study ID #: ITP-004
• Status: Completed
• Phase: Phase 3
• First received: January 31, 2012
• Last updated: April 18, 2016
• Start date: May 2011
• Est. completion date: June 2014

Study information

• Verified date: May 2013
• Source: Shandong University
• Contact: n/a
• Is FDA regulated: No
• Health authority: China: Ministry of Health
• Study type: Interventional

Clinical Trial Summary

The project was undertaking by Qilu Hospital of Shandong University and other 13 well-known hospitals in China. In order to report the efficacy and safety of Recombinant Human thrombopoietin combining with Rituximab for the treatment of adults with refractory immune thrombocytopenia (ITP), compared to conventional Rituximab therapy.

Description:

The investigators are undertaking a parallel group, multicentre, randomised controlled trial of 240 refractory ITP adult patients from 14 medical centers in China. One part of the participants are randomly selected to receive recombinant human thrombopoietin (given subcutaneously at a dose of 300 Units/kg for 14 consecutive days,following with a flexible dosage depending on platelet count until the 29th day), combining with rituximab (given intravenously at a dose of 100 mg weekly for 4 weeks, i.e. Day 1, 8, 15, 22; the others are selected to receive low-dose of rituximab treatment (given intravenously at a dose of 100 mg weekly, i.e. Day 1, 8, 15, 22). Platelet count, bleeding and other symptoms were evaluated before and after treatment. Adverse events are also recorded throughout the study. In order to report the efficacy and safety of the combination therapy compared to conventional rituximab therapy for the treatment of adults with refractory ITP.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 123
• Est. completion date: June 2014
• Est. primary completion date: December 2013
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 18 Years to 72 Years

Eligibility

Inclusion Criteria:

1. Meet the diagnostic criteria for immune thrombocytopenia.

2. Untreated hospitalized patients, may be male or female, between the ages of 18 ~ 80 years.

3. To show a platelet count < 30×10^9/L, and with bleeding manifestations.

4. Eastern Cooperative Oncology Group(ECOG)performance status = 2.

5. Willing and able to sign written informed consent

Exclusion Criteria:

1. Received chemotherapy or anticoagulants or other drugs affecting the platelet counts within 3 months before the screening visit.

2. Received high-dose steroids or [2] intravenous immunoglobulin transfusion(IVIG)in the 3 weeks prior to the start of the study.

3. Current HIV infection or hepatitis B virus or hepatitis C virus infections. Severe medical condition (lung, hepatic or renal disorder) other than ITP. 4.Unstable or uncontrolled disease or condition related to or impacting cardiac function (e.g., unstable angina, congestive heart failure, uncontrolled hypertension or cardiac arrhythmia)

5.Female patients who are nursing or pregnant, who may be pregnant, or who contemplate pregnancy during the study period.

6.Have a known diagnosis of other autoimmune diseases, established in the medical history and laboratory findings with positive results for the determination of antinuclear antibodies, anti-cardiolipin antibodies, lupus anticoagulant or direct Coombs test.

7.Patients who are deemed unsuitable for the study by the investigator.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Idiopathic Thrombocytopenic Purpura
• Purpura
• Purpura, Thrombocytopenic
• Purpura, Thrombocytopenic, Idiopathic

Intervention

Drug:
• rituximab; recombinant human thrombopoietin (rhTPO)
patients in recombination treatment group take Rituximab( intravenously ,100 mg weekly for 4 consecutive weeks); in combination with Rh-TPO( subcutaneously , 300U/kg for 14 consecutive days,followed by flexible treating dosage so as to keep the platelet count above 50×10^9/L until the 29th day)
• Rituximab
patients in recombinant treatment group take Rituximab intravenously at 100 mg weekly for 4 consecutive weeks(Day 1,8,15,22)

Locations

Country	Name	City	State
China	Qilu Hospital, Shandong University	Jinan	Shandong

Sponsors (7)

Lead Sponsor	Collaborator
Shandong University	First Hospital of China Medical University, Shandong Provincial Hospital, Shenzhen Second People's Hospital, The Affiliated Hospital of the Chinese Academy of Military Medical Sciences, The First Affiliated Hospital of Anhui Medical University, The First Affiliated Hospital of Dalian Medical University

Country where clinical trial is conducted

China, 

References & Publications (5)

Cheng Y, Wong RS, Soo YO, Chui CH, Lau FY, Chan NP, Wong WS, Cheng G. Initial treatment of immune thrombocytopenic purpura with high-dose dexamethasone. N Engl J Med. 2003 Aug 28;349(9):831-6. — View Citation

Mazzucconi MG, Fazi P, Bernasconi S, De Rossi G, Leone G, Gugliotta L, Vianelli N, Avvisati G, Rodeghiero F, Amendola A, Baronci C, Carbone C, Quattrin S, Fioritoni G, D'Alfonso G, Mandelli F; Gruppo Italiano Malattie EMatologiche dell'Adulto (GIMEMA) Thrombocytopenia Working Party. Therapy with high-dose dexamethasone (HD-DXM) in previously untreated patients affected by idiopathic thrombocytopenic purpura: a GIMEMA experience. Blood. 2007 Feb 15;109(4):1401-7. Epub 2006 Oct 31. — View Citation

Medeot M, Zaja F, Vianelli N, Battista M, Baccarani M, Patriarca F, Soldano F, Isola M, De Luca S, Fanin R. Rituximab therapy in adult patients with relapsed or refractory immune thrombocytopenic purpura: long-term follow-up results. Eur J Haematol. 2008 Sep;81(3):165-9. doi: 10.1111/j.1600-0609.2008.01100.x. Epub 2008 May 27. — View Citation

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. Review. — View Citation

Rodeghiero F, Stasi R, Gernsheimer T, Michel M, Provan D, Arnold DM, Bussel JB, Cines DB, Chong BH, Cooper N, Godeau B, Lechner K, Mazzucconi MG, McMillan R, Sanz MA, Imbach P, Blanchette V, Kühne T, Ruggeri M, George JN. Standardization of terminology, definitions and outcome criteria in immune thrombocytopenic purpura of adults and children: report from an international working group. Blood. 2009 Mar 12;113(11):2386-93. doi: 10.1182/blood-2008-07-162503. Epub 2008 Nov 12. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Evaluation of platelet response (Complete Response)	CR. A complete response (CR) was defined as a sustained (= 3 months) platelet count = 100×10^9/L	The time frame is up to 3 months per subject	Yes
Primary	Evaluation of platelet response (Response)	R. A response (R) was defined as a sustained (= 3 months) platelet count = 30×10^9/L without recurrence of thrombocytopenia.	The time frame is up to 3 months per subject	Yes
Primary	Evaluation of platelet response (No Response)	NR.No response (NR) was defined as platelet count < 30 × 10^9/L or a less than two fold increase in platelet count from baseline or the presence of bleeding. Platelet count must be measured on two occasions more than a day apart.	The time frame is up to 3 months per subject	Yes
Primary	Evaluation of platelet response (relapses)	A relapses was defined as platelet count falls below 30×10^9/L or bleeding accrues after achieving R or CR.	The time frame is up to 3 months per subject	Yes
Secondary	The number and frequency of therapy associated adverse events		up to 3 months per subject	Yes