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HealthyNCT00460122

Effects of Antibodies to White Blood Cells on Platelet Transfusion Patients

An observational study of Healthy and Transfusion Reactions, run by National Institutes of Health Clinical Center (CC) at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study will determine if transfusion of platelets containing HLA antibodies (certain antibodies to white blood cells) are more likely to cause transfusion reactions than transfusion of platelets that do not contain HLA antibodies. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Healthy, Transfusion Reactions
How many people
135 participants
Where
1 siteUnited States
Study dates
10 Apr 2007to 10 Aug 2012
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Both male and female donors
  • Any ethnic group
  • 18 years of age or older
  • Must meet the criteria for donating platelets in the DTM

Who cannot join

  • 1. Donors are not eligible to donate platelets in the DTM

Trial locations and contacts

1 site in 1 country.

United States1 site
  • National Institutes of Health Clinical Center, 9000 Rockville Pike

    Bethesda, Maryland, 20892

Other trials in United States

About this study

Official title: Pilot Study of the Incidence of HLA Class I and Class II Antibodies in Platelet Donors and Their Effects on the Transfusion Recipient

This study will determine if transfusion of platelets containing HLA antibodies (certain antibodies to white blood cells) are more likely to cause transfusion reactions than transfusion of platelets that do not contain HLA antibodies.

People 18 years of age or older who donate platelets at the NIH Clinical Center may be eligible for this study.

An extra tube of blood (about one teaspoon) is obtained from participating donors at the time of their donation at the NIH Platelet Center. The blood plasma in the extra tube is tested for HLA antibodies and antibodies to certain white blood cells called granulocytes. The research sample is assigned a code number for identification and sent to the HLA Laboratory in the Department of Transfusion Medicine.

Read the detailed description

Leukocyte antibodies can cause febrile transfusion reactions, pulmonary reactions to granulocyte transfusions, and transfusion related acute lung injury (TRALI). Despite the fact that the role of leukocyte antibodies in these reactions was first described almost 50 years ago, and that TRALI is now the leading cause of transfusion related fatalities, much remains uncertain concerning the role of HLA antibodies in these reactions. The primary purpose of this study is to retrospectively and prospectively determine if the incidence and nature of transfusion reactions differs in Clinical Center (CC) patients that were transfused with platelet components from donors with HLA antibodies and those without HLA antibodies. In addition, this study will prospectively determine the incidence of HLA antibodies in the NIH Department of Transfusion Medicine (DTM) platelet donor population. In this natural history study a 10-mL blood sample will be drawn from 600 platelet donors at the time that they are in the DTM donating platelets and it will be tested for HLA antibodies in the DTM. The blood sample for HLA antibody testing will be collected with other samples collected as part of the regular platelet donation process. Reactions in platelet transfusion recipients will be assessed by reviewing CC and DTM patient records.

Keywords
Human Leukocyte Antigens (HLA), Transfusion Reactions, Platelet Donors
Medical subject headings
Transfusion Reaction

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted13 Apr 2007 (estimated)
  2. Study start10 Apr 2007
  3. Study completion10 Aug 2012

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Time perspective
Other
Enrolment
135 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00460122
Sponsor's protocol ID
070125
Other IDs
07-CC-0125
Status last verified
10 Aug 2012
First submitted
12 Apr 2007
Last updated
12 Dec 2019
Results posted
No

Publications

  • Toy P, Popovsky MA, Abraham E, Ambruso DR, Holness LG, Kopko PM, McFarland JG, Nathens AB, Silliman CC, Stroncek D; National Heart, Lung and Blood Institute Working Group on TRALI. Transfusion-related acute lung injury: definition and review. Crit Care Med. 2005 Apr;33(4):721-6. doi: 10.1097/01.ccm.0000159849.94750.51.

    PubMed 15818095
  • Goldman M, Webert KE, Arnold DM, Freedman J, Hannon J, Blajchman MA; TRALI Consensus Panel. Proceedings of a consensus conference: towards an understanding of TRALI. Transfus Med Rev. 2005 Jan;19(1):2-31. doi: 10.1016/j.tmrv.2004.10.001.

    PubMed 15830325
  • BRITTINGHAM TE. Immunologic studies on leukocytes. Vox Sang. 1957 Sep;2(4):242-8. doi: 10.1111/j.1423-0410.1957.tb03699.x. No abstract available.

    PubMed 13496693

Questions about this trial

What is this clinical trial studying?

An observational study of Healthy and Transfusion Reactions, run by National Institutes of Health Clinical Center (CC) at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 12 Dec 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00460122, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Dec 2019.

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