Autoantibody Specificity and Response to IVIG in ITP

April 18, 2016 updated by: Ming Hou, Shandong University

Autoantibody Specificity and Response to Intravenous Immunoglobulin G (IVIG) in Immune Thrombocytopenia (ITP): a Retrospective Cohort Study

The objective of this human study was to evaluate the association between the specificity of anti-platelet autoantibodies and response to IVIG treatment.

Study Overview

Status

Completed

Conditions

Detailed Description

Immune thrombocytopenia (ITP) is a common autoimmune bleeding disorder, in which platelet surface GPIIb/IIIa and GPIb/IX are the two most frequently targeted autoantigens. Our previous studies in animal models of ITP demonstrated that intravenous immunoglobulin G (IVIG) could protect against anti-GPIIb/IIIa-mediated thrombocytopenia but failed to ameliorate ITP induced by most anti-GPIb/IX antibodies. The objective of this human study was to evaluate the association between the specificity of anti-platelet autoantibodies and response to IVIG treatment.

Study Type

Observational

Enrollment (Actual)

672

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

  • China
    • Shandong
      • Jinan, Shandong, China, 250012
        • Qilu Hospital, Shandong University

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 to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

adult patients with severe ITP who underwent IVIG therapy and had platelet autoantibodies assayed

Description

Inclusion Criteria:

  • (1) the diagnosis of ITP was based on the presence of isolated thrombocytopenia and the absence of any obvious initiating and/or underlying cause of the thrombocytopenia in accordance with the recently released international consensus guidelines,(2) a diagnosis was established during the 4 weeks prior to initiation of IVIG treatment, (3) age ≥ 18 years, (4) a platelet count of ≤ 20 × 109/L, and (5) a bleeding score ≥ 9 at the time of admission according to the clinical scoring system described by Khellaf et al. to assess the severity of hemorrhage.

Exclusion Criteria:

  • a history of any ITP-specific treatment administered prior to or concomitantly with the IVIG

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

Cohorts and Interventions

Group / Cohort
IVIG therapy in ITP
IVIG therapy in untreated adults with severe ITP

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
initial response
Time Frame: within 7 days of dosing
The criteria for an initial response was a platelet count ≥ 30 × 109/L and doubling of the baseline count within 7 days of dosing (confirmed on at least 2 separate occasions at least 7 days apart), and absence of bleeding.
within 7 days of dosing

Collaborators and Investigators

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

Sponsor

Shandong University

Collaborators

West China Hospital
Jinan Military General Hospital
Shandong University of Traditional Chinese Medicine
Second Affiliated Hospital of Medical College Shandong University

Investigators

  • Principal Investigator: Ming Hou, MD, Qilu Hospital, Shandong University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

February 1, 2005

Primary Completion (Actual)

January 1, 2013

Study Completion (Actual)

January 1, 2014

Study Registration Dates

First Submitted

August 14, 2012

First Submitted That Met QC Criteria

August 14, 2012

First Posted (Estimate)

August 16, 2012

Study Record Updates

Last Update Posted (Estimate)

April 20, 2016

Last Update Submitted That Met QC Criteria

April 18, 2016

Last Verified

August 1, 2012

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ITP-006

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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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