Eltrombopag Combining Rituximab Versus Eltrombopag in the Management of Primary Immune Thrombocytopenia (ITP) in Adults

NCT ID: NCT04518475

Last Updated: 2020-08-19

Basic Information

• Recruitment Status: UNKNOWN
• Clinical Phase: PHASE4
• Total Enrollment: 224 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2020-08-10
• Study Completion Date: 2022-08-10

Brief Summary

This multicenter randomized, open-label study aimed to compare the efficacy and safety of eltrombopag combining rituximab with eltrombopag in China adult ITP patients .This study was be conducted in adult ITP patients who had not responded to or had relapsed after previous treatment of ITP, including first line therapy and /or splenectomy.

Detailed Description

The primary objective of this study was to evaluate the efficacy and safety of eltrombopag combining rituximab treating previously treated ITP patients compared to eltrombopag. The secondary objective was to evaluate the efficacy of eltrombopag combining rituximab in ITP patients with positive autoantibody compared to eltrombopag .In addition, health-related quality of life (HRQoL) measure was assessed in all participants.

224 eligible subjects were randomized to either eltrombopag combining rituximab or eltrombopag treatment in 1:1 ratio. 112 enrolled patients are randomly picked up to take eltrombopag combining with rituximab at the indicated dose. 112 enrolled patients are randomly picked up to take eltrombopag at the indicated dose.

The initial dose of eltrombopag administration was an oral 75 mg once daily in all participants .The dose of eltrombopag was adjusted according to the subject platelet count during the period from week 1 to week 24.

Subjects in eltrombopag combining rituximab treatment group received single dose infusion of rituximab 375 mg/m(2) within 14 days after enrollment.

Conditions

Primary Immune Thrombocytopenia (ITP)

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

efficacy of eltrombopag combining rituximab

After enrollment,all subjects receive eltrombopag treatment,the initial dose of eltrombopag administration was an oral 75 mg once daily.Complete blood count including platelet count was done once a week.The dose of eltrombopag was adjusted according to the subject platelet count during the period from week 1 to week 24. If the platelet count >250×10^9/L, the eltrombopag will stop until the platelet count <30×10^9/L.

All subjects receive single dose infusion of rituximab 375 mg/m(2) within 14 days after enrollment.

Efficacy and safety will be evaluated at Week 4, Week 8, and Week 12.

Group Type: EXPERIMENTAL

eltrombopag combining rituximab

Intervention Type: DRUG

After enrollment,all subjects receive eltrombopag treatment,the initial dose of eltrombopag administration was an oral 75 mg once daily.Complete blood count including platelet count was done once a week.The dose of eltrombopag was adjusted according to the subject platelet count during the period from week 1 to week 24. If the platelet count >250×10^9/L, the eltrombopag will stop until the platelet count <30×10^9/L.

All subjects receive single dose infusion of rituximab 375 mg/m(2) within 14 days after enrollment.

Efficacy and safety will be evaluated at Week 4, Week 8, and Week 12.

efficacy of eltrombopag

After enrollment,all subjects receive eltrombopag treatment,the initial dose of eltrombopag administration was an oral 75 mg once daily.Complete blood count including platelet count was done once a week.The dose of eltrombopag was adjusted according to the subject platelet count during the period from week 1 to week 24. If the platelet count >250×10^9/L, the eltrombopag will stop until the platelet count <30×10^9/L.

Efficacy and safety will be evaluated at Week 4, Week 8, and Week 12.

Group Type: ACTIVE_COMPARATOR

eltrombopag

Intervention Type: DRUG

After enrollment,all subjects receive eltrombopag treatment,the initial dose of eltrombopag administration was an oral 75 mg once daily.Complete blood count including platelet count was done once a week.The dose of eltrombopag was adjusted according to the subject platelet count during the period from week 1 to week 24. If the platelet count >250×10^9/L, the eltrombopag will stop until the platelet count <30×10^9/L.

Efficacy and safety will be evaluated at Week 4, Week 8, and Week 12.

Interventions

eltrombopag combining rituximab

After enrollment,all subjects receive eltrombopag treatment,the initial dose of eltrombopag administration was an oral 75 mg once daily.Complete blood count including platelet count was done once a week.The dose of eltrombopag was adjusted according to the subject platelet count during the period from week 1 to week 24. If the platelet count >250×10^9/L, the eltrombopag will stop until the platelet count <30×10^9/L.

All subjects receive single dose infusion of rituximab 375 mg/m(2) within 14 days after enrollment.

Efficacy and safety will be evaluated at Week 4, Week 8, and Week 12.

Intervention Type: DRUG

eltrombopag

After enrollment,all subjects receive eltrombopag treatment,the initial dose of eltrombopag administration was an oral 75 mg once daily.Complete blood count including platelet count was done once a week.The dose of eltrombopag was adjusted according to the subject platelet count during the period from week 1 to week 24. If the platelet count >250×10^9/L, the eltrombopag will stop until the platelet count <30×10^9/L.

Efficacy and safety will be evaluated at Week 4, Week 8, and Week 12.

Intervention Type: DRUG

Other Intervention Names

TPO-R agonist & anti-CD20 antibody; TPO-R agonist

Eligibility Criteria

Inclusion Criteria

1. Signed written informed consent

2. Age from 18 to 60 years old

3. Diagnosed with ITP and have a platelet count of <30 ×10^9/L on Day 1 (or within 48 hours prior to dosing on Day 1).

4. Patients who have no response or relapsed after splenectomy(at least more than 6 months). Or patients who have not been splenectomised and have either not responded to one or more prior therapies, or who have relapsed prior therapy.

5. Subjects treated with previous therapy(including but not limited to corticosteroid, azathioprine, danazol, cyclosporin A, mycophenolate mofetil) must have been completed prior to randomization, or must not be increasing a dose after enrollment.

6. No pre-existing cardiac disease within the last 3 months. No arrhythmia known to increase the risk of thrombolic events (e.g. atrial fibrillation), or patients with a Corrected QT interval (QTc) >450msec or QTc >480 for patients with a Bundle Branch Block.

7. No pre-existing infection within the last 1 months(including but not limited to pulmonary infection)

8. Laboratory tests for coagulation function showed that prothrombin time (PT/INR) and activated partial thromboplastin time (APTT) no exceed normal by more than 20%. No history of clotting disorder, other than ITP.

9. White blood cell count, neutrophil absolute value, hemoglobin, within the reference range, with the following exceptions:

• Hemoglobin: females and males 10.0 g/dl are eligible for inclusion,
• Absolute neutrophil count (ANC) ≥1500/µL (1.5×109/L) is required for inclusion

10. The following blood chemistry test result no exceed normal by more than 20%:alanine aminotransferase, aspartate aminotransferase, total bilirubin, creatinine,serum albumin must not be below the lower limit of normal (LLN) by more than 10%.

11. Subject is non-childbearing potential of childbearing potential and use acceptable methods of contraception throughout the study.

12. Subjects fully understand and are able to comply with the requirements of the research protocol and are willing to complete the study as planned.

Exclusion Criteria

1. Patients with any prior history of arterial or venous thrombosis, and with following risk factors: cancer, Factor V Leiden, ATIII deficiency, antiphospholipid syndrome.

2. Pregnant or lactating women;

3. Subjects is currently receiving treatment with another study medication.

4. Any laboratory or clinical evidence for HIV infection.

5. Any clinical history for hepatitis C infection; chronic hepatitis B infection; or any evidence for active hepatitis at the time of subject screening. Laboratory test shows positive serology for Hepatitis C or Hepatitis B (HB). In addition, if negative for HBsAg but HBcAb positive (regardless of HBsAb status), a HB DNA test will be performed and if positive the subject will be excluded.

6. History of platelet aggregation that prevents reliable measurement of platelet counts.

7. Any clinically relevant abnormality, other than ITP,which in the opinion of the investigator makes the subject unsuitable for participation in the study.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

The Second Affiliated Hospital of Kunming Medical University

OTHER

Sponsor Role: collaborator

Henan Cancer Hospital

OTHER_GOV

Sponsor Role: collaborator

Tianjin Medical University Second Hospital

OTHER

Sponsor Role: collaborator

The First Affiliated Hospital of Xiamen University

OTHER

Sponsor Role: collaborator

Nantong University

OTHER

Sponsor Role: collaborator

Institute of Hematology & Blood Diseases Hospital, China

OTHER

Sponsor Role: lead

Responsible Party

Zhang Lei

Professor/Vice director of Thrombosis &Hemostasis Center

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Lei Zhang, M.D., Ph.D

Role: PRINCIPAL_INVESTIGATOR

Institute of Hematology & Blood Diseases Hospital, China

Locations

Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College

Tianjin, , China

Site Status: RECRUITING

Countries

China

Central Contacts

Lei Zhang

Role: CONTACT

zhanglei1@ihcams.ac.cn

+86 13502118379

Facility Contacts

Xiaofan Liu

Role: primary

liuxiaofan@ihcams.ac.cn

+86 13752006059

Other Identifiers

IHBDH-IIT2020014

Identifier Type: -

Identifier Source: org_study_id