Cardiovascular Disease (CVD) in Haemophilia

February 24, 2011 updated by: UMC Utrecht

Cardiovascular Disease in Adult Haemophilia Patients

Life expectancy of hemophilia patients has improved considerably during the past decades and is approaching that of the general population. Hemophilia patients are therefore likely to be confronted with age-related disorders in addition to their primary illness and related diseases. Little is known about the occurrence of age-related co-morbidity, especially cardiovascular disease (CVD), in these patients. Low clotting factor levels are hypothesized to protect against both atherosclerosis and thrombus formation, resulting in a reduced risk of ischemic CVD. CVD mortality has been reported to be lower in haemophilia patients than in the general population, but data on non-fatal CVD are lacking, and no adjustment for CVD risk factors has been made so far.

The aim of our study is to assess the occurrence of CVD and its risk factors in a large cohort of haemophilia patients.

In this prospective multicenter cohort study in a group of 700-800 male patients with haemophilia A or B aged 30 years or older from The Netherlands and the UK, data on CVD history and CVD risk factors will be collected at baseline and compared with the general age-matched male population. Overall QRISK2 cardiovascular risk scores will be calculated and also compared with the general population. During a follow-up period of 5 and 10 years the occurrence of CVD events will be recorded and compared with the expected occurrence based on the QRISK2 scores and with data from the general population.

Study Overview

Status

Unknown

Conditions

Study Type

Observational

Enrollment (Anticipated)

750

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

  • Netherlands
      • Groningen, Netherlands
        • Division of Haemostasis and Thrombosis, Department of Haematology, University Medical Center Groningen
      • Utrecht, Netherlands
        • Van Creveldkliniek, University Medical Center Utrecht
  • United Kingdom
      • Cardiff, United Kingdom
        • School of Medicine, Cardiff University and University Hospital of Wales
      • Glasgow, United Kingdom
        • Glasgow Haemophilia and Thrombosis Centre, Royal Infirmary
      • London, United Kingdom
        • Katharine Dormandy Haemophilia Centre and Haemostasis Unit, Royal Free Hospital
      • Sheffield, United Kingdom
        • Sheffield Haemophilia and Thrombosis Centre, Royal Hallamshire Hospital

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

30 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Sampling Method

Non-Probability Sample

Study Population

All male haemophilia patients aged 30 years or older who are treated at one of the participating haemophilia treatment centers (Utrecht and Groningen, The Netherlands, and Sheffield, london, Cardiff and Glasgow, UK).

Patients are recruited during regular clinic visits.

Description

Inclusion Criteria:

  • Haemophilia A or B (mild, moderate or severe)
  • Male gender
  • Age 30 years or older
  • Treated at participating haemophilia treatment center

Exclusion Criteria:

  • No specific exclusion criteria

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Ischemic cardiovascular disease
Time Frame: After 5 and 10 years
After 5 and 10 years
Cardiovascular disease risk factors
Time Frame: At baseline
At baseline

Secondary Outcome Measures

Outcome Measure
Time Frame
Association between clotting factor concentrate administration and cardiovascular events
Time Frame: 5-10 years
5-10 years

Collaborators and Investigators

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

Sponsor

UMC Utrecht

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

January 1, 2009

Study Registration Dates

First Submitted

February 24, 2011

First Submitted That Met QC Criteria

February 24, 2011

First Posted (Estimate)

February 25, 2011

Study Record Updates

Last Update Posted (Estimate)

February 25, 2011

Last Update Submitted That Met QC Criteria

February 24, 2011

Last Verified

February 1, 2011

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CVD study 1

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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