Summary

In this section, we discussed how genetic testingThe analysis of DNA and chromosomes for clinical purposes; can name and tell you if there are genes that are likely to be linked to unhealthy outcomes and illnesses. is one way to learn more about your cancer risk.

The main points addressed were as follows:

• Genetic testing can tell whether or not someone has a mutationA permanent change that affects genes. that increases risk of cancer; a positiveWhat you were testing for shows up in test results. result means a mutation is present, while a negativeWhat you were testing for does not show up in test results. result means it is not.
• There are several possible shortcomings to genetic testing for cancer. For example, test answers don't give a definite "yes or no" answer about whether or not someone will develop cancer, and they don't provide information about factors such as behavior or environment that can affect cancer risk.
• There are several possible advantages to genetic testing for cancer risk. For example, test results can provide information that can help plan one's medical care now and in the future.
• There are possible risks involved in genetic testing for cancer risk. For example, some are concerned that knowing their risk for cancer is high may affect their lives in a negative way.
• Genetic testing for cancer is a personal choice; there is no "right" or "wrong" decision. Health professionals can help you make an informed decision.