Response rate (medicine)
In medicine, a response rate is the percentage of patients whose cancer shrinks or disappears after treatment. [1]
When used as a clinical endpoint for clinical trials of cancer treatments, this often called the objective response rate (ORR).[2][3]
The FDA definition of ORR is "the proportion of patients with tumor size reduction of a predefined amount and for a minimum time period."[2]: 7
References
- ^ "NCI Dictionary of Cancer Terms". National Cancer Institute. Retrieved 5 June 2016.
- ^ a b Guidance for Industry Clinical Trial Endpoints for the Approval of Cancer Drugs and Biologics FDA
- ^ Objective tumor response and RECIST criteria in cancer clinical trials
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