A Study of TAK-079 in Adults With Persistent/Chronic Primary Immune Thrombocytopenia

  • STATUS
    Recruiting
  • End date
    Aug 1, 2024
  • participants needed
    54
  • sponsor
    Takeda
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Updated on 7 October 2022
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Summary

Primary immune thrombocytopenia (ITP) is a rare disease that results in low levels of platelets - the cells that help blood clot.

The main aim of the study is to check for side effects from taking TAK-079 at three different dose levels. Another aim is to learn if TAK-079 can increase the platelet count in people with ITP.

In addition to receiving stable background therapy for ITP, participants will receive an injection of either TAK-079 or a placebo once a week for 2 months. A placebo looks like TAK-079 but will not have any medicine in it. After treatment, all participants will be followed-up for another 2 months.

Then, participants who received TAK-079 will continue to be followed-up for an extra 4 months. Participants who received the placebo and would like to receive TAK-079 may be able to do this in an extension period in the study.

Description

The drug being tested in this study is called TAK-079. TAK-079 is being tested to treat people who have primary immune thrombocytopenia (ITP). This study will evaluate the safety and biologic activity of TAK-079 or matching placebo in combination with stable ITP background therapy.

The study will enroll approximately 36 to 54 participants. In Part A of the study, participants will be randomly assigned (by chance, like flipping a coin) to one of the three treatment groups. Those who received placebo in this period will have the choice to receive TAK-079 after a safety follow-up period and will be randomized to one of the two open-label TAK-079 treatment arms. An unblinded safety review will take place once a minimum of 24 evaluable participants are available for analysis in Part A to decide whether to open enrollment into Part B.

In Part B participants will be randomly assigned to one of two treatment groups. Those who received placebo in this period will have the choice to receive study drug after a safety follow-up period in a single open-label TAK-079 treatment arm.

This multi-center trial will be conducted worldwide. All participants will be followed for at least 8 weeks in a Safety Follow-up Period, and a 16-week Long-term Follow-up Period after the 8 weeks of treatment.

Details
Condition Primary Immune Thrombocytopenia
Treatment Placebo, TAK-079
Clinical Study IdentifierNCT04278924
SponsorTakeda
Last Modified on7 October 2022

Eligibility

 Yes No Not Sure

Inclusion Criteria

Diagnosed with ITP that has persisted for ≥3 months, diagnosed in accordance to The American Society of Hematology 2011 Evidence-based Practice Guideline for Immune Thrombocytopenia or the International Consensus Report on The Investigation and Management of Primary Immune Thrombocytopenia as locally applicable
Has a mean platelet count of <30,000/μL (and individually ≤35,000/μL) on at least 2 measurements at least 1 week apart during screening
Diagnosis of ITP supported by a prior response to an ITP therapy (other than a thrombopoietin receptor agonists [TPO-RA]) that achieved a platelet count of ≥50,000/μL
If receiving standard background treatment for ITP, treatment should be stable in dose and frequency for at least 4 weeks before dosing
Permitted standard background treatments may include: 1 oral corticosteroid; ±1 immunosuppressant from the following list: azathioprine, danazol, dapsone, cyclosporine, mycophenolate mofetil, mycophenolate sodium; ±1 TPO-RA (romiplostim, eltrombopag, avatrombopag); ±fostamatinib. Corticosteroids, including dexamethasone, must be given as oral, daily or every-other-day therapy as opposed to pulse therapy
The dose of any permitted standard background therapy must be expected to remain stable through the study, unless dose reduction is required because of toxicities

Exclusion Criteria

Use of anticoagulants or any drug with antiplatelet effect (such as aspirin) within 3 weeks before screening
Has a history of any thrombotic or embolic event within 12 months before screening
Has a history of splenectomy within 3 months before screening
Use of intravenous immunoglobulin (IVIg), subcutaneous immunoglobulin or anti-D immunoglobulin treatment within 4 weeks of screening, or an expectation that any therapy besides the participant's standard background therapies may be used for treatment of thrombocytopenia (e.g., a rescue therapy) between screening and dosing
Diagnosed with chronic obstructive pulmonary disease (COPD) or asthma, and a prebronchodilatory forced expiratory volume in 1 second (FEV1) <50% of predicted normal
Use of rituximab or any monoclonal antibody (mAb) for immunomodulation within 4 months before first dosing. Note: Participants with prior exposure to rituximab must have cluster of differentiation (CD) 19 counts within the normal range at screening
Use of immunosuppressants (such as cyclophosphamide, vincristine) other than permitted oral immunosuppressants within 6 months before first dosing
Has been diagnosed with myelodysplastic syndrome
Has received a live vaccine within 4 weeks before screening or has any live vaccine planned during the study
Has had an opportunistic infection ≤12 weeks before initial study dosing or is currently
undergoing treatment for a chronic opportunistic infection, such as tuberculosis (TB)
pneumocystis pneumonia, cytomegalovirus, herpes simplex virus, herpes zoster, or atypical
mycobacteria
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