Transfusion-Associated Microchimerism in Individuals Rece... | NCT00400192

Studies
Transfusion-Associated Microchimerism in Individuals Receiving a Blood Transfusion After a Traumatic Injury

NCT00400192

Sponsor

Vitalant Research Institute

Status

Completed

Last Update Posted

Apr 15, 2013Estimated

Enrollment

451Actual

Phase

Not provided

Conditions

Chimerism
Blood Transfusion
Wounds and Injuries

Interventions

Not provided

Countries

United States

Protocol Section

Identification Module Status Module Sponsor/Collaborators Module Oversight Module Description Module Conditions Module Design Module Arms/Interventions Module Outcomes Module Eligibility Module Contacts/Locations Module References Module IPD Sharing Statement Module

Results Section

Participant Flow Module Baseline Characteristics Module Outcome Measures Module Adverse Events Module More Info Module

Annotation Section

Annotation Module

Document Section

Large Document Module

Derived Section

Miscellaneous Info Module Condition Browse Module Intervention Browse Module

Protocol Section

Identification Module

NCT ID

Results Section

No data available

No data is available for this block.

Annotation Section

No data available

No data is available for this block.

Document Section

No data available

No data is available for this block.

Derived Section

Miscellaneous Info Module

Version Holder

ID	Type	Description	Link
R01HL083388	U.S. NIH Grant/Contract		View source

Status Module

Record Verification Date

Apr 2013

Overall Recruitment Status or Expanded Access Status

Completed

Last Known Status

Not provided

Delayed Posting

Not provided

Why Stopped

Not provided

Expanded Access Info

Start Date

Nov 2006

Primary Completion Date

Aug 2010Actual

Completion Date

Jul 2012Actual

First Submitted Date

Nov 15, 2006

First Submission Date that Met QC Criteria

Nov 15, 2006

First Posted Date

Nov 16, 2006Estimated

Results Waived

Not provided

Results First Submitted Date

Not provided

Results First Submitted that Met QC Criteria

Not provided

Results First Posted Date

Not provided

Certification/Extension (aka Delayed Results) First Submitted Date

Not provided

Certification/Extension First Submitted that Passed QC Review

Not provided

Certification/Extension First Posted Date

Not provided

Last Update Submitted Date

Apr 11, 2013

Last Update Posted Date

Apr 15, 2013Estimated

Name	Class
National Heart, Lung, and Blood Institute (NHLBI)	NIH

Oversight Module

Has Data Monitoring Committee (DMC)

Is FDA Regulated Drug

Not provided

Is FDA Regulated Device

Not provided

Is Unapproved Device

Not provided

Pediatric Postmarket Surveillance of a Device Product

Not provided

Product Exported from US

Not provided

FDAAA801 Violation

Not provided

Description Module

Brief Summary

Individuals who experience a traumatic injury often have a significant amount of blood loss and may require a blood transfusion. In some individuals who receive a blood transfusion, white blood cells from the donor's blood may remain in the body for years, a condition known as microchimerism. This study will examine the reasons why microchimerism occurs in some blood transfusion recipients and not others.

Detailed Description

Approximately 20% of individuals who suffer a traumatic injury require a blood transfusion; of these, 10% to 15% experience a condition known as transfusion-associated microchimerism. This occurs when white blood cells, or leukocytes, from the donor's blood persist in the recipient long after the transfusion occurs. The genetically distinct donor cells can remain in the individual for decades, and may account for as many as 4% of the white blood cells in the recipient's body. This suggests that the donor cells are tolerated by the recipient's immune system. The purpose of this study is to examine the specific factors that predispose some blood transfusion recipients to develop microchimerism.

In this study, blood samples will be collected from injured individuals who arrive at the University of California at Davis Medical Center. Individuals who receive a blood transfusion, as well as a control group of individuals who do not receive a transfusion, will be approached to enroll in the study. Individuals who agree to participate will have their blood collected at Days 7, 14, and 28 and Months 3 and 6. Study researchers will analyze the blood for evidence of microchimerism. Participants with microchimerism will undergo additional blood collection at Months 12, 18, 24, 30, and 36. Information will be collected from all participants on health status, injury characteristics, hospital care, blood transfusion details, and blood donor characteristics.

Design Module

Study Type

Observational

Number of References to an Expanded Access Study

Not provided

Expanded Access Types

Not provided

Patient Registry

Not provided

Target Follow-Up Duration

Not provided

Phases

Not provided

Interventional Study Design

Allocation

Not provided

Intervention Model

Biospecimen

Retention

Enrollment

451Actual

Outcomes Module

Primary Outcomes

Measure	Description	Time Frame
Prevalence and magnitude of transfusion-associated microchimerism		1, 2 and 4 weeks, 3 and 6 months

Secondary Outcomes

Not provided

Other Outcomes

Not provided

Eligibility Module

Eligibility Criteria

Inclusion Criteria:

Hospitalized for a traumatic injury
Received at least one unit of transfused red blood cells

Exclusion Criteria:

Currently incarcerated
Inadequate decision-making capacity of the participant and no available surrogate decision-maker
Prior bone marrow or solid organ transplantation

Accepts Healthy Volunteers

Sex

All

Sex/Gender Based

Not provided

Sex/Gender Description

Not provided

Minimum Age

12 Years

Maximum Age

Not provided

Standard Ages

ChildAdultOlder Adult

Study Population

Emergency Department

Sampling Method

Probability Sample

Contacts/Locations Module

Central Contacts

Not provided

Overall Officials

Name	Affiliation	Role
Michael P. Busch, MD, PhD	Vitalant Research Institute	Principal Investigator

Locations

Facility	Status	City	State	ZIP	Country	Contacts
University of California, Davis, Medical Center		Sacramento	California	95817	United States

References Module

Citations

PubMed Identifier	Type	Citation	Retractions
15514522	Background	Utter GH, Owings JT, Lee TH, Paglieroni TG, Reed WF, Gosselin RC, Holland PV, Busch MP. Blood transfusion is associated with donor leukocyte microchimerism in trauma patients. J Trauma. 2004 Oct;57(4):702-7; discussion 707-8. doi: 10.1097/01.ta.0000140666.15972.37.
15920405	Background	Utter GH, Owings JT, Lee TH, Paglieroni TG, Reed WF, Gosselin RC, Holland PV, Busch MP. Microchimerism in transfused trauma patients is associated with diminished donor-specific lymphocyte response. J Trauma. 2005 May;58(5):925-31; discussion 931-2. doi: 10.1097/01.ta.0000162142.72817.5c.