Clinical Research Glossary

disease-free survival disease-free survival


The length of time after treatment that a person lives without the illness coming back.

Example of disease-free survival in a sentence

Some studies look at disease-free survival to see whether the drug works to keep a disease from coming back.

More Info

Disease-free survival can be used to describe the length of time an individual or a group of participants within a study are free of their disease.

Not every person in a study will necessarily have the same response to the study treatment.

Other info to think about when joining a study

Depending on the kind of study you are considering or reading about, you may see or hear references to “disease-free survival” during the informed consent process or other informational study materials.

“Disease-free survival” may be used to explain the purpose of a study or explain the reason for particular procedures and tests. For example, a study could be collecting data on disease-free survival after participants take a certain treatment.

If you have any questions about what it means for a study to look at disease-free survival, you should ask the study team.

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