Biomarkers Serum Collection Methodology Pilot Study

The purpose of this study is to compare the standard collection of whole blood in tiger top tubes for serum collection versus a collection method of added FVIII to whole blood samples in the hemophilia population for routine biomarker assays to ensure reliable assay results.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Hemophilia A Blood Coagulation Disorders Blood Coagulation Disorders, Inherited Coagulation Protein Disorders Congenital, Hereditary, and Neonatal Diseases and Abnormalities Genetic Diseases, Inborn Hematologic Diseases Hemic and Lymphatic Diseases Hemorrhagic Disorders

Age range

18 year–75 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Lombardi Cancer Center

Washington D.C., District of Columbia, 20007, United States

About this study

20 adults with severe Hemophilia A seen in one HTC site for routine blood drawing will be consented for discard blood sampling.

Half of the whole blood discard will be placed in a tiger top test tube, and half of the whole blood discard sample will be placed in a red top test tube containing exogenously added recombinant human FVIII concentrate [Advate, Baxter immuno] to assure an end concentration of once IU per CC of whole blood.

Both whole blood specimens will be allowed to coagulate at room temperature and then will be centrifuged to prepare serum. The separated serum from each type of collection test tubes will be aliquoted into eppendorf tubes (a minimum of two aliquots per sample) at a volume of 150 microliters. Aliquoted serum samples will be stored at -70 degrees centigrade and shipped on dry ice to Synarc Labs.

A panel of standard CTX bone resorption assays will be preformed in duplicate on the two differently processed serum specimens obtained from each subject.

Results will be analyzed for inter-subject variability using stored age-matched samples provided by Synarc and intra-subject variability will also be analyzed.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Severe Hemophilia A

Exclusion criteria

If they are not diagnosed with severe hemophilia A.

Sponsors and collaborators

Lead sponsor

Georgetown University

Other

Registry information

Important dates

Study start: 2010
Primary completion: 2011
Study completion: 2011
First posted: Mar 18, 2011
Registry last updated: Jul 24, 2012

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed