This Clinical Study is to Test Efficacy and Safety of BT595 in Chronic Primary Immune Thrombocytopenia (ITP)

August 12, 2019 updated by: Biotest

An Open Label, Prospective, Randomized, Multicenter Study Investigating Clinical Efficacy and Safety of the Human Normal Immunoglobulin for Intravenous Administration BT595 in Patients With Chronic Primary Immune Thrombocytopenia (ITP)

The main purpose of this study is to assess the efficacy and safety of BT595 in adult subjects with chronic ITP. The primary objective of this study is to determine the rate of subjects with a response. A response is defined as a platelet count of ≥30×10^9/L and at least a 2 fold increase of the baseline count, confirmed on at least 2 separate occasions at least 7 days apart, and the absence of bleeding. The secondary objectives of this study, in addition to further efficacy assessments, are to evaluate the safety of BT595.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
34

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Bulgaria
      • Pleven, Bulgaria, 5800
        • Investigational site # 3597
      • Plovdiv, Bulgaria, 4000
        • Investigational site # 3593
      • Sofia, Bulgaria, 1431
        • Investigational site # 3598
      • Sofia, Bulgaria, 1756
        • Investigational site # 3591
      • Varna, Bulgaria, 9010
        • Investigational site # 3596
  • Czechia
      • Praha, Czechia, 10034
        • Investigational site # 4202
  • Germany
      • Berlin, Germany, 13353
        • Investigational site # 4901
      • München, Germany, 81377
        • Investigational Site #4902
  • Hungary
      • Budapest, Hungary, 1083
        • Investigational site # 3601
      • Debrecen, Hungary, 4032
        • Investigational site # 3604
      • Győr, Hungary, 9023
        • Investigational site # 3607
      • Miskolc, Hungary, 3529
        • Investigational site # 3602
      • Nyiregyhaza, Hungary, 4400
        • Investigational site # 3603
      • Pécs, Hungary, 7621
        • Investigational site # 3606
  • Serbia
      • Belgrade, Serbia, 11000
        • Investigational site # 3811
      • Belgrade, Serbia, 11080
        • Investigational site # 3813
      • Niš, Serbia, 18000
        • Investigational site #3814
      • Novi Sad, Serbia, 21000
        • Investigational site # 3812
  • Spain
      • Madrid, Spain, 28006
        • Investigational site # 3403
      • Madrid, Spain, 28007
        • Investigational site # 3404
      • Malaga, Spain
        • Investigational Site #3401
      • Palma de Mallorca, Spain, 07012
        • Investigational Site # 3402

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Main Inclusion Criteria:

  • Diagnosis of chronic ITP (>12 months' duration), including diagnosis of refractory ITP, and as defined by the International Working Group (Rodeghiero et al, 2009), where ITP is described as an autoimmune disorder characterized by isolated thrombocytopenia in the absence of other causes or disorders that may be associated with thrombocytopenia
  • Treatment is indicated because of a high risk of bleeding or a need to raise the platelet count
  • Mean screening platelet count of <30×10^9/L from 3 qualifying platelet counts performed within approximately 7 to 14 days before the start of treatment, with no individual platelet count above 35×10^9/L. The subject may be rescreened if the mean screening platelet count is ≥30×10^9/L. (Note: If a subject is rescreened, all screening laboratory tests must be repeated.)

Main Exclusion Criteria:

  • Secondary thrombocytopenia or acquired medical conditions known to be associated with secondary thrombocytopenia, such as chronic lymphocytic leukemia; lymphoma; multiple myeloma; thyroid disease; or other forms of thrombocytopenia, such as drug induced thrombocytopenia; cirrhotic liver diseases; antiphospholipid syndrome; environmental thrombocytopenia; and bone marrow diseases
  • Severe concomitant diseases that in the judgment of the investigator will interfere with the study, such as autoimmune hemolytic anemia, acute renal failure, and noncontrolled arterial hypertension
  • Laboratory findings (e.g., abnormal laboratory values for hemoglobin, transaminase levels [alanine aminotransferase, aspartate aminotransferase], total bilirubin, creatinine, blood urea nitrogen, and immunoglobulins G, A, M) that preclude participation
  • Positive Coombs test (direct and indirect)
  • Planned invasive procedures during the time frame of the study
  • Maintenance therapy with intravenous immunoglobulins (IVIgs) or infusion of IVIgs within 3 months before start of the study
  • Unresponsive to previous IVIg treatment
  • Additional therapy with high dose corticosteroids (equivalent to >30 mg prednisone/day), thrombopoietin receptor agonists, and/or immunosuppressives and/or other therapies (e.g., infusion of platelets) within 1 month before the start of the study (Note: Subjects on stable doses of ITP active treatment must not have modified the dose in the preceding 2 weeks and must maintain their prestudy dose during the study. Corticosteroids should not be given as a premedication. Rescue therapy with short courses [i.e., 1 to 4 days] of high dose steroids and IVIgs are allowed up to 2 weeks before study inclusion.)
  • History of thrombotic events (including myocardial infarction, cerebral vascular accident [including stroke], pulmonary embolism, and deep vein thrombosis) 6 months before treatment start with BT595 or the presence of significant risk factors for thrombotic events
  • Therapy with live attenuated virus vaccines 3 months before start of the study
  • Selective, absolute immunoglobulin A (IgA) deficiency or known antibodies to IgA

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: 2 day treatment schedule
Patients will receive a dosage of 1 g/kg bw per day of BT595 for 2 consecutive days
Biological: BT595
Other Names:
  • Human Immunoglobulin
Experimental: 5 day treatment schedule
Patients will receive a dosage of 0.4 g/kg bw per day of BT595 for 5 consecutive days
Biological: BT595
Other Names:
  • Human Immunoglobulin

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Rate of subjects with response (R)
Time Frame: 1 month
The rate of subjects with response is defined as subjects with a platelet count of ≥30×10^9/L and at least a 2 fold increase of the baseline count, confirmed on at least 2 separate occasions at least 7 days apart, and the absence of bleeding
1 month

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
The number of subjects with complete response (CR)
Time Frame: 1 month
The number of subjects with CR, which is defined as a platelet count ≥100×10^9/L, confirmed on at least 2 separate occasions at least 7 days apart, and the absence of bleeding
1 month
The percentage of subjects with complete response (CR)
Time Frame: 1 month
The percentage of subjects with CR, which is defined as a platelet count ≥100×10^9/L, confirmed on at least 2 separate occasions at least 7 days apart, and the absence of bleeding
1 month
The number of subjects with no response (NR)
Time Frame: 1 month
The number of subjects with NR, which is defined as subjects without R, i.e. a platelet count <30×10^9/L or less than a 2 fold increase of baseline platelet count, confirmed on at least 2 separate occasions, approximately 1 day apart, or bleeding
1 month
The percentage of subjects with no response (NR)
Time Frame: 1 month
The percentage of subjects with NR, which is defined as subjects without R, i.e. a platelet count <30×10^9/L or less than a 2 fold increase of baseline platelet count, confirmed on at least 2 separate occasions, approximately 1 day apart, or bleeding
1 month
The number of subjects with a loss of response
Time Frame: 1 month
The number of subjects with a loss of response (only in subjects who previously had CR or R), which is defined as a platelet count <100×10^9/L or bleeding (from CR) or platelet count <30×10^9/L or less than 2 fold increase of the baseline platelet count, or bleeding (from R). Platelet counts will be confirmed on at least 2 separate occasions approximately 1 day apart
1 month
The percentage of subjects with a loss of response
Time Frame: 1 month
The percentage of subjects with a loss of response (only in subjects who previously had CR or R), which is defined as a platelet count <100×10^9/L or bleeding (from CR) or platelet count <30×10^9/L or less than 2 fold increase of the baseline platelet count, or bleeding (from R). Platelet counts will be confirmed on at least 2 separate occasions approximately 1 day apart
1 month
Time to Response (R)
Time Frame: 1 month
Time to response (R), which is defined as the time from the start of treatment to the time of achievement of CR or R
1 month
Duration of response (R),
Time Frame: 1 month
Duration of response (R), which is defined as the time from the achievement of CR or R to loss of CR or R
1 month
The number of subjects with response to ≥50×10^9/L
Time Frame: 1 month
The number of subjects with response to ≥50×10^9/L, which is defined as a platelet count increase to at least ≥50×10^9/L within 7 days of the first BT595 infusion
1 month
The percentage of subjects with response to ≥50×10^9/L
Time Frame: 1 month
The percentage of subjects with response to ≥50×10^9/L, which is defined as a platelet count increase to at least ≥50×10^9/L within 7 days of the first BT595 infusion
1 month
Subject's maximum platelet count achieved
Time Frame: 1 month
1 month
Time to subject's maximum platelet count
Time Frame: 1 month
1 month
Time course of platelet count
Time Frame: 1 month
1 month
Occurrence of bleeding symptoms
Time Frame: 1 month
1 month

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Biotest

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Syneos Health

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Judit Demeter, MD, PhD, DSc, Semmelweis University Medical School, First Department of Medicine, Department of Hematology, 1083 Budapest, Korányi S. u. 2/a, Hungary

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 1, 2016

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2018

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2018

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 25, 2016

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 4, 2016

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 9, 2016

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 14, 2019

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 12, 2019

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 992

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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