Biomarkers of Inherited Cardiovascular Conditions

June 14, 2016 updated by: National Heart Centre Singapore

The National Heart Centre Singapore has recently created a biorepository that is IRB approved for the use in genetic studies: "molecular and imaging studies of cardiovascular health and disease (CIRB Ref: 2013/605/C)". This repository enables IRB approved projects within the National Heart Centre Singapore to access the samples for use in biomarker or genetic studies with consent from patients for these studies. The IRB approved biorepository process also allows for patients, when they have consented to this, to be approached for inclusion in additional studies at National Heart Centre Singapore.

In this study, the investigators will examine the genetic variation in genes known to cause inherited cardiac conditions and also look for circulating biomarkers (ICC) in 600 patients with ICC and in 500 patients with ischemic heart disease (e.g.IHD) who will be used as controls. Healthy controls will also be used (800) as they become available in the biorepository. All samples have already been collected in the NHCS biorepository.

These patients would have been recruited and consented to the biorepository. This will enable all to better understand heart disease in Singaporean patients. In addition, the investigators will invite a subset of 10 patients with ICCs to provide a second blood sample (20mls - 2 tablespoons) on top of the samples that will be collected for the biorepository. The second blood sample will be used for antibody biomarkers that will be developed in the basic science laboratories. These antibodies will be used to develop new biomarkers of human heart disease to improve human health.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

In young adults and children inherited cardiac conditions (ICCs) that affect cardiac structure and electrical activity, account for most cases of sudden cardiac death. Of the ICCs, SCD due to Brugada Syndrome is particularly prevalent in SE Asia where it causes early loss of life in young men. While there have been major advances in the treatment of coronary artery disease (CAD), heart failure (HF) and acute MI, it remains very difficult to identify individuals at risk of SCD due to ICCs even when these diseases run in families and/or the mutation is known. This, in large part, relates to our limited understanding of the effects of gene mutations on clinical phenotypes due to variation in mutation penetrance and expressivity. In Singapore, and SE Asia in general, the issue of mutation interpretation is very difficult, if not impossible, as population-specific variant annotation is limited or completely absent for the common ICC genes. In addition, while DNA variants are important other protein biomarkers in the heart and in the vessels may be equally important, and these remain completely unaddressed in all populations.The investigatorswill address these issue in cases and controls using advanced sequencing and informatics approaches and by generating novel antibody libraries using patient samples.

Overall, the research performed in this study will find new ways of diagnosing patients at risk of sudden death both in the hospital environment and also in the general population. This will enable effective screening and stratification of patients at risk of sudden death due to inherited causes or following myocardial infarction.

Study Type

Observational

Enrollment (Anticipated)

10

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

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

21 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

The investigators will use DNA samples from 600 patients with known ICC diseases (e.g. Brugada syndrome, long QT syndrome, hypertrophic and dilated cardiomyopathy) and 500 ischemic controls who have been recruited or will be recruited to the NHCS biorepository.

For antibody studies, the investigators will invite 10 patients with phenotypes of interest (e.g. myocardial fibrosis or previous myocardial infarction) whom have consented to the biorepository to provide an additional 20mls (2 tablespoons).

Description

Inclusion Criteria:

  • Patients with ICC.
  • Patients with available cardiac/ cardiovascular imaging.
  • Patients with phenotypes of interest (e.g. myocardial fibrosis, previous infarction).
  • Age ≥ 21 years and ≤ 80 years.

Exclusion Criteria:

  • Patients with HIV or hepatitis B or hepatitis C.
  • Patients with active autoimmune disease.
  • Patients who are unable or unwilling to provide consent.

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
Biomarkers of inherited cardiovascular conditions from genetic variation in genes known to cause inherited cardiac conditions.
Time Frame: 5 years
5 years

Collaborators and Investigators

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

Sponsor

National Heart Centre Singapore

Investigators

  • Principal Investigator: Stuart A Cook, PHD, National Heart Centre Singapore

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, 2014

Primary Completion (Anticipated)

December 1, 2020

Study Completion (Anticipated)

December 1, 2020

Study Registration Dates

First Submitted

May 31, 2016

First Submitted That Met QC Criteria

June 14, 2016

First Posted (Estimate)

June 17, 2016

Study Record Updates

Last Update Posted (Estimate)

June 17, 2016

Last Update Submitted That Met QC Criteria

June 14, 2016

Last Verified

May 1, 2016

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2013/933/C

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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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