relapse-free survival

Definition of relapse-free survival
National Cancer Institute

relapse-free survival

(REE-laps … ser-VY-vul)
In cancer, the length of time after primary treatment for a cancer ends that the patient survives without any signs or symptoms of that cancer. In a clinical trial, measuring the relapse-free survival is one way to see how well a new treatment works. Also called DFS, disease-free survival, and RFS.

Source: NCI Dictionary of Cancer Terms