- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01172015
NATURAL KILLER CELLS IN IMMUNOLOGIC THROMBOCYTOPENIC PURpura of Adults
April 20, 2015 updated by: Assistance Publique Hopitaux De Marseille
NK-ITP STUDY : NATURAL KILLER CELLS IN IMMUNOLOGIC THROMBOCYTOPENIC PURPURA OF ADULTS.
Immunologic thrombcytopenic purpura (ITP) affects both children and adults.
The incidence is estimated in adults about 1,6/100 000/per year.
Chronic and relapsing forms of the disease that represent 70% of adult cases are associated with impairment of quality of life related to treatments side effects and bleeding.
ITP is secondary to the destruction of circulating platelets through an auto-immune process and to a decrease of platelet production in bone marrow.
Auto antibodies are usually directed against epitopes of the GPIIb/IIIa, expressed by platelets.
The destruction of the platelets seems to occur mainly in the spleen through antibody dependent cytotoxicity.
Both macrophages and cytotoxic T lymphocytes subsets participate to the platelet destruction through the CD16, the low affinity receptor for the Fc of IgG.
Thus the CD16 "pathway" is a target for treatments in ITP as for example intravenous immunoglobulins and more recently inhibitors of the syk kinase.
Study Overview
Status
Completed
Intervention / Treatment
Detailed Description
Natural Killer cells (NK) cells, who are now implicated in the pathophysiology of several autoimmune diseases, express CD16 and display antibody dependent cytotoxicty.
Moreover NK cells are present in human spleen.
However their role in ITP has not been studied so far.
NK could represent a new target for treatments in ITP.
We propose thus to conduct a study to characterizes NK cells changes in patients with ITP.
Study Type
Interventional
Enrollment (Actual)
80
Phase
- Not Applicable
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
-
-
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Marseille, France, 13
- APHM
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-
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
Ages Eligible for Study
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- ITP patients,platelets less than 50000 G/L
Exclusion Criteria:
- Secondary ITP (VIH, VHC...)
- treatment with Immunosuppressive agents except corticoids (10 mg/day)
- treatment with Ig IV less than 3 weeks
- treatment with Rifuximab less than 6 months
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: Basic Science
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: PTI patients
Study NK cells functions, phenotypic changes and transcripts from ITP patients
|
|
Other: healthy volunteers
Study NK cells functions, phenotypic changes and transcripts from healthy volunteers
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Compare NK cells functions, phenotypic changes and transcripts from ITP patients and controls in a case control, multicentric study
Time Frame: 24 months
|
Flow cytometry,transcripts.
|
24 months
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Influence of the Ig (IV) treatment on ITP patients' NK cells
Time Frame: 24 months
|
24 months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Principal Investigator: Schleinitz Nicolas, APHM
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
September 1, 2010
Primary Completion (Actual)
June 1, 2012
Study Completion (Actual)
June 1, 2014
Study Registration Dates
First Submitted
July 26, 2010
First Submitted That Met QC Criteria
July 28, 2010
First Posted (Estimate)
July 29, 2010
Study Record Updates
Last Update Posted (Estimate)
April 22, 2015
Last Update Submitted That Met QC Criteria
April 20, 2015
Last Verified
April 1, 2015
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2010-A00396-33
- 2010 03 (Other Identifier: ap hm)
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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