FDA Warns About Some Genetic Test Predictions
FDA says healthcare providers and patients should be aware that claims for many genetic tests to predict a patient’s response to specific medications have not been reviewed by the agency and may not have the scientific or clinical evidence to support such use for most medications. An agency safety communication cautions that changing drug treatment based on results from such a genetic test could lead to inappropriate treatment decisions and potentially serious health consequences for the patient.
The agency has become aware, the notice says, of genetic tests that claim results can be used to help doctors identify which antidepressant medication would have increased effectiveness or side effects compared to other antidepressant medications. However, the notice says, the relationship between DNA variations and the effectiveness of antidepressant medication has never been established. “Patients and healthcare providers should not make changes to a patient’s medication regimen based on the results from genetic tests that claim to predict a patient’s response to specific medications, but are not supported by sufficient scientific or clinical evidence to support this use,” the notice says.
FDA says there are a limited number of cases for which at least some evidence exists to support a correlation between a genetic variant and drug levels in the body, and this is described in the labeling of FDA approved or cleared genetic tests and FDA approved medications.