Immune ThrombocytopeniaPhase 22023CD20ITPNCT05995054
A Prospective, One-arm and Open Clinical Study of Obinutuzumab in the Treatment of Immune Thrombocytopenia
A Phase 2 study testing Obinutuzumab Injection [Gazyva] in people with Immune Thrombocytopenia and Treatment, run by Institute of Hematology & Blood Diseases Hospital, China at 1 site in China.
Trial summary
To evaluate the safety and efficacy of Obinutuzumab in the treatment of immune thrombocytopenia in patients who have not responded adequately or relapsed after first-line treatment. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Immune Thrombocytopenia, Treatment
- What is being tested?
- Obinutuzumab Injection [Gazyva]
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 110 participants
- Where
- 1 siteChina
- Study dates
- 28 Aug 2023to Aug 2026
- Phase
- Phase 2
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Age 18 and above, male or female
- Conform to the diagnostic criteria of immune Thrombocytopenia (ITP)
- Diagnosis of ITP ≥3 months, and with a platelet count of <30 X 109/L measured within 2 days prior to administration（Platelet counts were measured at least 2 times during screening (at least 1 week apart) with platelets<30 X 109/L）
- Failure to achieve response or relapse after corticosteroid therapy
- The previous emergency treatment of ITP (e.g. methylprednisolone, platelet transfusion, IVIG transfusion) must be completed at least 2 weeks before the first administration
- Signed and dated written informed consent
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- With Liver and kidney function<1.5×upper limit of normal， such as ALT、AST，BUN，Cre，etc.
- ECOG physical state score ≤ 2 points
- Cardiac function of the New York Society of Cardiac Function ≤ 2
- Patients receiving maintenance treatment (including corticosteroids (less than or equal to 0.5mg/kg prednisone), TPO receptor agonists, etc.) must have a stable dose at least 4 weeks before the first administration, and azathioprine, danazol, cyclosporin A, tacrolimus, sirolimus, etc. must be stopped at least 4 weeks before the first administration; The end of rituximab treatment was>3 months；More than 6 months after splenectomy.
Who cannot join
- Subjects with primary disease of important organs (liver, kidney, heart, etc.), or with immune system diseases;
- Secondary thrombocytopenia caused by various reasons, such as connective tissue disorders, bone marrow hematopoietic failure disease, myelodysplastic syndrome, malignancy, drugs, inherited thrombocytopenia, common variable immune deficiency, lymphoma, etc.;
- Subjects infected with human immunodeficiency virus (HIV);
- Uncontrollable or active infections during the screening period, including hepatitis B, hepatitis C, cytomegalovirus, EB virus, or positive syphilis antigen;
- Subjects with extensive and severe bleeding, such as hemoptysis, upper gastrointestinal hemorrhage, intracranial hemorrhage;
- Subjects with heart disease that requires treatment or hypertension that has been judged by researchers to be poorly controlled currently;
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- Subjects with any venous or arterial thrombosis, atherosclerosis, and other diseases;
- Subjects with a history of malignant solid tumor or have received allogeneic stem cell transplantation or organ transplantation;
- Subjects with mental disorders who are unable to sign normal informed consent and conduct trials and follow-up;
- Subjects whose toxic symptoms caused by pre-trial treatment have not disappeared;
- Subjects with other serious diseases that may limit their participation in this trial (diabetes; severe cardiac insufficiency; myocardial obstruction or unstable arrhythmia or unstable angina pectoris in the last 6 months; gastric ulcer; active autoimmune disease, etc.);
- Subjects with septicemia or other irregular bleeding;
- Female subjects who are nursing or pregnant/suspected pregnant (positive pregnancy tests for human chorionic gonadotropin in urine during screening).
- Patients taking antiplatelet drugs at the same time;
Trial locations and contacts
1 site in 1 country.
China1 site, 1 recruiting
- Recruiting
Chinese Academy of Medical Science and Blood Disease Hospital
Tianjin, 300020
Yunfei Chen, MD, +86-22-23909009, chenyunfei@ihcams.ac.cn
About this study
Official title: A Prospective, One-arm and Open Clinical Study to Assess Safety and Efficacy of Anti-Human CD20 Monoclonal Antibody Obinutuzumab in the Treatment of Primary Immune Thrombocytopenia
To evaluate the safety and efficacy of Obinutuzumab in the treatment of immune thrombocytopenia in patients who have not responded adequately or relapsed after first-line treatment.
Read the detailed description
Immune thrombocytopenia (ITP) is an organ-specific autoimmune disease, which is characterized by decreased platelet count and skin and mucosal bleeding. ITP is a kind of disease with increased platelet destruction and impaired platelet production caused by autoimmunity. Conventional treatment of adult ITP includes first-line glucocorticoid and immunoglobulin therapy, second line TPO and TPO receptor agonist, splenectomy and other immunosuppressive treatments (such as rituximab, vincristine, azathioprine, etc.). ITP is one of the most common hemorrhagic diseases. At present, the treatment response of ITP is not good, and a considerable number of patients need drug maintenance treatment, which seriously affects the quality of life of patients and increases the economic burden of patients. Therefore, there is still a lack of effective treatment for adult ITP, especially for recurrent and refractory ITP patients, which is one of the problems that have attracted more attention and need to be solved urgently.
Obinutuzumab is the first personalized type Ⅱ glycosylation engineered CD20 monoclonal antibody. Studies have shown that compared with rituximab, obinutuzumab may improve its efficacy in lymphoma by increasing DCD and ADCC effects and reducing drug resistance by reducing CDC effects. In view of this, Obinutuzumab may have the same effect in the treatment of ITP, and may be more effective in the treatment of ITP, but there is also a risk of poor efficacy. At present, there is a lack of data on the efficacy and safety of Obinutuzumab in the treatment of ITP in China.
Therefore, the investigators designed this clinical trial to evaluate the safety and efficacy of Obinutuzumab in the treatment of immune thrombocytopenia in patients who have not responded adequately or relapsed after first-line treatment.
- Conditions
- Immune Thrombocytopenia, Treatment
- Being tested
- Obinutuzumab Injection [Gazyva]
- Medical subject headings
- Purpura, Thrombocytopenic, Idiopathic
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Obinutuzumab Injection [Gazyva]Drug
intravenous Obinutuzumab administration
This study adopts a prospective, single arm, open design method. 110 subjects were enrolled in the study and were treated with CD20 monoclonal antibody (Obinutuzumab: 1000mg) for once.
The first stage is the main research stage (d1-w12), which is the core treatment period. The subjects will receive intravenous infusion of 1000mg Obinutuzumab for once to observe the safety and efficacy during treatment.
The second stage (w12-w48) is the stage of withdrawal from the visit, mainly to observe the safety and continuous efficacy of Obinutuzumab after treatment.
| Study group | Role | What they receive |
|---|---|---|
| Intervention (Obinutuzumab) | Experimental | 110 enrolled subjects: one infusion Receives: Drug: Obinutuzumab Injection [Gazyva] |
What is being measured
The primary outcome is the main question the study is designed to answer.
Evaluation of overall efficacy response after Obinutuzumab treatment within 12 weeks
Overall response rate defined as proportion of subjects with a platelet count ≥ 30 × 10^9/L and at least 2-fold from baseline at the meanwhile within 12 weeks after initial administration in absence of rescue therapy, and without having had dose increment of TPO-RA or corticosteroids during the study period
Measured: 12 weeks
Secondary outcomes (12)
Evaluation of overall efficacy response after Obinutuzumab treatment within 8 weeks
Overall response rate defined as proportion of subjects with a platelet count ≥ 30 × 10^9/L and at least 2-fold from baseline at the meanwhile within 8 weeks after initial administration in absence of rescue therapy, and without having had dose increment of TPO-RA or corticosteroids during the study period
Measured: 8 weeks
Evaluation of overall efficacy response after Obinutuzumab treatment within 6 months
Overall response rate defined as proportion of subjects with a platelet count ≥ 30 × 10^9/L and at least 2-fold from baseline at the meanwhile within 6 months after initial administration in absence of rescue therapy, and without having had dose increment of TPO-RA or corticosteroids during the study period
Measured: 6 months
Evaluation of overall efficacy response after Obinutuzumab treatment within 12 months
Overall response rate defined as proportion of subjects with a platelet count ≥ 30 × 10^9/L and at least 2-fold from baseline at the meanwhile within 12 months after initial administration in absence of rescue therapy, and without having had dose increment of TPO-RA or corticosteroids during the study period
Measured: 12 months
Evaluation of sustained response rate after Obinutuzumab treatment within 6 months
Sustained response rate defined as proportion of subjects who keep a platelet count ≥ 30 × 10^9/L and at least 2-fold from baseline at the meanwhile at 6 months after initial administration in absence of rescue therapy, and without having had dose increment of TPO-RA or corticosteroids during the study period
Measured: 6 months
Evaluation of sustained response rate after Obinutuzumab treatment within 12 months
Sustained response rate defined as proportion of subjects who keep a platelet count ≥ 30 × 10^9/L and at least 2-fold from baseline at the meanwhile at 12 months after initial administration in absence of rescue therapy, and without having had dose increment of TPO-RA or corticosteroids during the study period
Measured: 12 months
Time to onset response
Time to onset response defined as the time needed for subjects to have a platelet count ≥ 30 × 10^9/L and at least 2-fold from baseline at the meanwhile after initial administration in absence of rescue therapy, and without having had dose increment of TPO-RA or corticosteroids during the study period
Measured: 12 months
Duration of response
The longest duration for which the subject sustained a platelet count ≥ 30 × 10^9/L and at least 2-fold from baseline at the meanwhile after initial administration in absence of rescue therapy, and without having had dose increment of TPO-RA or corticosteroids during the study period
Measured: 12 months
Emergency treatment after Obinutuzumab treatment within 12 weeks
Percentage of subjects who received emergency treatment after Obinutuzumab treatment within 12 weeks
Measured: 12 weeks
Reduction of concomitant drug after Obinutuzumab treatment within 12 weeks
Percentage of patients with reduced doses of corticosteroids and/or other concomitant immunosuppressive drugs at baseline by 12 weeks of Obinutuzumab treatment
Measured: 12 weeks
Number of subjects with clinically significant bleeding as assessed using the world health organization (WHO) bleeding scale after Obinutuzumab treatment within 12 weeks
Changes of the subjects' numbers in WHO bleeding score after Anti-CD20 antibody treatment according to the reported World Health Organization's Bleeding Scale. The WHO Bleeding Scale is a measure of bleeding severity with the following grades: grade 0 = no bleeding, grade 1= petechiae, grade 2= mild blood loss, grade 3 = gross blood loss, and grade 4 = debilitating blood loss.
Measured: 12 weeks
One-year recurrence-free survival rate
Time from the start of treatment to the occurrence of a relapse or death event
Measured: 12 months
Safety of Anti-CD20 antibody treatment
Incidence, severity, and relationship of treatment emergent adverse events after Anti-CD20 antibody treatment
Measured: 12 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Aug 2023
- Study start28 Aug 2023
- Primary completionAug 2025 (estimated)
- Study completionAug 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Immune ThrombocytopeniaStudies of the same condition, open and under way.
- More trials run by Institute of Hematology & Blood Diseases Hospital, ChinaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 110 participants (estimated)
Sponsor and investigators
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Lei Zhang, MD, Principal investigator, Chinese Academy of Medical Science and Blood Disease Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05995054
- Sponsor's protocol ID
- IIT2023039
- Acronym
- 2023CD20ITP
- Status last verified
- Sep 2024
- First submitted
- 9 Aug 2023
- Last updated
- 21 Feb 2025
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Researchers qualified can request the dataset, including de-identified individual subject data. Data may be requested from PI from 12 months 36 months after study completion.
Study at a glance
From the registry record, last updated by the sponsor on 21 Feb 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Prospective, One-arm and Open Clinical Study to Assess Safety and Efficacy of Anti-Human CD20 Monoclonal Antibody Obinutuzumab in the Treatment of Primary Immune Thrombocytopenia
- ClinicalTrials.gov ID
- NCT05995054
- Acronym / sponsor ID
- 2023CD20ITP / IIT2023039
- Conditions
- Immune Thrombocytopenia, Treatment
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 110 participants (estimated)
- Lead sponsor
- Institute of Hematology & Blood Diseases Hospital, ChinaUniversity, hospital or other
- Study start
- 28 Aug 2023 (actual)
- Primary completion
- Aug 2025 (estimated)
- Study completion
- Aug 2026 (estimated)
- First posted
- 16 Aug 2023 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
To evaluate the safety and efficacy of Obinutuzumab in the treatment of immune thrombocytopenia in patients who have not responded adequately or relapsed after first-line treatment.
Detailed description
Immune thrombocytopenia (ITP) is an organ-specific autoimmune disease, which is characterized by decreased platelet count and skin and mucosal bleeding. ITP is a kind of disease with increased platelet destruction and impaired platelet production caused by autoimmunity. Conventional treatment of adult ITP includes first-line glucocorticoid and immunoglobulin therapy, second line TPO and TPO receptor agonist, splenectomy and other immunosuppressive treatments (such as rituximab, vincristine, azathioprine, etc.). ITP is one of the most common hemorrhagic diseases. At present, the treatment response of ITP is not good, and a considerable number of patients need drug maintenance treatment, which seriously affects the quality of life of patients and increases the economic burden of patients. Therefore, there is still a lack of effective treatment for adult ITP, especially for recurrent and refractory ITP patients, which is one of the problems that have attracted more attention and need to be solved urgently.
Obinutuzumab is the first personalized type Ⅱ glycosylation engineered CD20 monoclonal antibody. Studies have shown that compared with rituximab, obinutuzumab may improve its efficacy in lymphoma by increasing DCD and ADCC effects and reducing drug resistance by reducing CDC effects. In view of this, Obinutuzumab may have the same effect in the treatment of ITP, and may be more effective in the treatment of ITP, but there is also a risk of poor efficacy. At present, there is a lack of data on the efficacy and safety of Obinutuzumab in the treatment of ITP in China.
Therefore, the investigators designed this clinical trial to evaluate the safety and efficacy of Obinutuzumab in the treatment of immune thrombocytopenia in patients who have not responded adequately or relapsed after first-line treatment.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Intervention (Obinutuzumab) | Experimental | Drug: Obinutuzumab Injection [Gazyva]110 enrolled subjects: one infusion |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (10 listed)
- Age 18 and above, male or female
- Conform to the diagnostic criteria of immune Thrombocytopenia (ITP)
- Diagnosis of ITP ≥3 months, and with a platelet count of <30 X 109/L measured within 2 days prior to administration（Platelet counts were measured at least 2 times during screening (at least 1 week apart) with platelets<30 X 109/L）
- Failure to achieve response or relapse after corticosteroid therapy
- The previous emergency treatment of ITP (e.g. methylprednisolone, platelet transfusion, IVIG transfusion) must be completed at least 2 weeks before the first administration
Key exclusion criteria (14 listed)
- Subjects with primary disease of important organs (liver, kidney, heart, etc.), or with immune system diseases;
- Secondary thrombocytopenia caused by various reasons, such as connective tissue disorders, bone marrow hematopoietic failure disease, myelodysplastic syndrome, malignancy, drugs, inherited thrombocytopenia, common variable immune deficiency, lymphoma, etc.;
- Subjects infected with human immunodeficiency virus (HIV);
- Uncontrollable or active infections during the screening period, including hepatitis B, hepatitis C, cytomegalovirus, EB virus, or positive syphilis antigen;
- Subjects with extensive and severe bleeding, such as hemoptysis, upper gastrointestinal hemorrhage, intracranial hemorrhage;
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Obinutuzumab Injection [Gazyva]intravenous Obinutuzumab administration This study adopts a prospective, single arm, open design method. 110 subjects were enrolled in the study and were treated with CD20 monoclonal antibody (Obinutuzumab: 1000mg) for once. The first stage is the main research stage (d1-w12), which is the core treatment period. The subjects will receive intravenous infusion of 1000mg Obinutuzumab for once to observe the safety and efficacy during treatment. The second stage (w12-w48) is the stage of withdrawal from the visit, mainly to observe the safety and continuous efficacy of Obinutuzumab after treatment. | Drug | Intervention (Obinutuzumab) |
Primary outcome
Evaluation of overall efficacy response after Obinutuzumab treatment within 12 weeks
Time frame: 12 weeks
Overall response rate defined as proportion of subjects with a platelet count ≥ 30 × 10^9/L and at least 2-fold from baseline at the meanwhile within 12 weeks after initial administration in absence of rescue therapy, and without having had dose increment of TPO-RA or corticosteroids during the study period
12 secondary outcomes
Evaluation of overall efficacy response after Obinutuzumab treatment within 8 weeks
Time frame: 8 weeks
Evaluation of overall efficacy response after Obinutuzumab treatment within 6 months
Time frame: 6 months
Evaluation of overall efficacy response after Obinutuzumab treatment within 12 months
Time frame: 12 months
Evaluation of sustained response rate after Obinutuzumab treatment within 6 months
Time frame: 6 months
Evaluation of sustained response rate after Obinutuzumab treatment within 12 months
Time frame: 12 months
Time to onset response
Time frame: 12 months
Duration of response
Time frame: 12 months
Emergency treatment after Obinutuzumab treatment within 12 weeks
Time frame: 12 weeks
Reduction of concomitant drug after Obinutuzumab treatment within 12 weeks
Time frame: 12 weeks
Number of subjects with clinically significant bleeding as assessed using the world health organization (WHO) bleeding scale after Obinutuzumab treatment within 12 weeks
Time frame: 12 weeks
One-year recurrence-free survival rate
Time frame: 12 months
Safety of Anti-CD20 antibody treatment
Time frame: 12 months
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Feb 2025.
- Individual participant dataSharing planned: Yes. Researchers qualified can request the dataset, including de-identified individual subject data. Data may be requested from PI from 12 months 36 months after study completion.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Lei Zhang, MD principal investigator
Chinese Academy of Medical Science and Blood Disease Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Obinutuzumab Injection [Gazyva] in people with Immune Thrombocytopenia and Treatment, run by Institute of Hematology & Blood Diseases Hospital, China at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 10 inclusion and 14 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 21 Feb 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Yunfei Chen, MD (+8618502220788, chenyunfei@ihcams.ac.cn), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Evaluation of overall efficacy response after Obinutuzumab treatment within 12 weeks (time frame: 12 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Feb 2025.