The Malmö International Brother Study (MIBS)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00231751
Recruitment Status : Completed
First Posted : October 4, 2005
Last Update Posted : October 4, 2005
Information provided by:
Skane University Hospital

Brief Summary:
Existing data support the concept that a genetic predisposition for inhibitor development exists. The aim of the Malmö International Brother Study (MIBS) is to evaluate genetic factors associated with the development of inhibitory antibodies in patients with hemophilia.

Condition or disease
Hemophilia A With Inhibitors

Detailed Description:
Inhibitory antibodies to factor VIII develop in 10-15% of all patients with hemophilia A and in 25-30% of patients with the severe form of the disease after exposure to factor VIII concentrates. Both genetic and environmental risk factors for inhibitor development have been evaluated, but in most cases without consistent results. Among the genetic factors, an association between large rearrangements of the factor VIII and IX genes and a higher risk for inhibitors has been described. However, a majority of patients with null mutations, including the intron 22 inversion, do not develop inhibitory antibodies. It is obvious that other genetic markers influencing the immune response to replacement therapy in patients with hemophilia remain to be identified and the aim of Malmö International Brother Study (MIBS) is to characterize these factors.

Study Type : Observational
Observational Model: Defined Population
Primary Purpose: Screening
Time Perspective: Cross-Sectional
Time Perspective: Retrospective
Official Title: The Malmö International Brother Study (MIBS)
Study Start Date : November 2002
Estimated Study Completion Date : June 2004

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Hemophilia
U.S. FDA Resources

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

-Mild, moderate or severe hemophilia A or B and one or more brothers with mild, moderate or severe hemophilia A or B

Exclusion Criteria:

-Absence of sufficient information to classify inhibitor status

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00231751

Malmö University Hospital
Malmö, Sweden
Sponsors and Collaborators
Skane University Hospital
Principal Investigator: Jan Astermark, M.D., Ph.D. Skane University Hospital

Publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00231751     History of Changes
Other Study ID Numbers: MIBS
First Posted: October 4, 2005    Key Record Dates
Last Update Posted: October 4, 2005
Last Verified: September 2005

Keywords provided by Skane University Hospital:
Hemophilia A

Additional relevant MeSH terms:
Hemophilia A
Blood Coagulation Disorders, Inherited
Blood Coagulation Disorders
Hematologic Diseases
Coagulation Protein Disorders
Hemorrhagic Disorders
Genetic Diseases, Inborn