Genes are made up of DNA. We have two copies of each gene. One copy is from our mother and one copy is from our father. The genes that we focus on are the ones that are responsible for building heart muscle cells and that are part of the heart’s electrical system.
When there is an abnormal change in a gene it may cause a disease or increase a person’s risk of developing a genetic disorder. These changes happen due to a spelling mistake in our DNA. This spelling mistake causes the gene to no longer work properly.
Changes in genes that are important for building heart muscle cells and for the heart’s electrical system can sometimes cause IHRCs. These gene changes are often inherited from a parent, but can happen for the first time in a person at the time they were conceived.
Genetic testing is a way to look for changes in a specific set of genes. In the case of IHRCs, genetic testing focuses on the genes that are involved in controlling the heartbeat and building the heart muscle.
All patients and family members wanting genetic testing should speak to a genetic counsellor before proceeding.
A family history questionnaire is designed to help your healthcare provider get a better understanding of your family health history and assess your risk of certain genetic diseases in order to determine whether you are a candidate for genetic testing.