Cardiology

Cardiac genetic mutation may not always predict heart disease

More than 750,000 people in the United States have dilated cardiomyopathy, a potentially life-threatening condition in which the heart's main pumping chamber, the left ventricle, enlarges and grows increasingly weak. Research ...

Obstetrics & gynaecology

Do women regret embryo testing before IVF?

The most effective way to increase the odds that an embryo will successfully implant during in vitro fertilization (IVF) is genetic testing to see if the embryo is normal.

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Genetic testing

Genetic testing allows the genetic diagnosis of vulnerabilities to inherit diseases, and can also be used to determine a person's ancestry. Normally, every person carries two copies of every gene, one inherited from their mother, one inherited from their father. The human genome is believed to contain around 20,000 - 25,000 genes. In addition to studying chromosomes to the level of individual genes, genetic testing in a broader sense includes biochemical tests for the possible presence of genetic diseases, or mutant forms of genes associated with increased risk of developing genetic disorders. Genetic testing identifies changes in chromosomes, genes, or proteins. Most of the time, testing is used to find changes that are associated with inherited disorders. The results of a genetic test can confirm or rule out a suspected genetic condition or help determine a person's chance of developing or passing on a genetic disorder. Several hundred genetic tests are currently in use, and more are being developed.

Since genetic testing may open up ethical or psychological problems, genetic testing is often accompanied by genetic counseling.

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