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All of our genes come in pairs. We get a copy from each parent. Genes help determine everything from our eye colour to our height. We can also inherit gene changes. Gene changes can increase our risk for getting diseases like cancer. Or we can inherit gene changes that cause genetic diseases. These may include conditions like cystic fibrosis or sickle cell anemia. To have certain genetic conditions, you must get a copy of the changed gene from each parent.
Some genetic conditions are more common in certain ethnic groups. A screening test can be done to see if you are a carrier for the condition tested. A carrier is a person who has a gene change but is not affected by the condition. A carrier has an increased chance of having an affected child if their partner is also a carrier of the same condition. Testing often involves checking your DNA in a sample of your blood or saliva.
The results of genetic screening can help you make choices about having children. If you test positive, your partner should usually be tested too.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse advice line (811 in most provinces and territories) if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.
Depending on your background, you can be tested to see if you or your partner might pass down gene changes to your child. You may be tested for:
If you think you might be the carrier of a genetic condition that you could pass along to your child, you may want to think about having genetic testing. Seeing a genetic counsellor may also help. They can explain what is involved.
Certain conditions are more common in some ethnic groups, such as those listed above. Some close-knit religious communities also have higher rates of certain conditions.
People with a family history of one of these conditions also may want to think about testing. You may want to have carrier screening and counselling before you have a child. The tests will help you understand the risks as well as your options. Speak with your doctor about whether this type of testing is available in your area.
Go to https://www.healthwise.net/patientEd
Enter Q084 in the search box to learn more about "Ethnicity-Based Genetic Screening: Care Instructions".
Adaptation Date: 3/1/2022
Adapted By: Alberta Health Services
Adaptation Reviewed By: Alberta Health Services
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