Definition

A laboratory test done on a tumor tissue sample to help match a patient’s tumor to a specific drug or therapy. A FoundationOne CDx test looks at many different genes in the tissue sample to help identify whether a patient’s tumor has a specific gene mutation (change) or biomarker that is targeted by a particular drug or therapy. This helps determine whether the drug might be an effective treatment for the patient’s tumor. A FoundationOne CDx test is a type of companion diagnostic test. FoundationOne is a registered trademark of Foundation Medicine, Inc. Also called F1CDx test.