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Time to progression
Pronunciation
Definition 1
The length of time from the date of diagnosis or the start of treatment for a disease until the disease starts to get worse or spread to other parts of the body. In a clinical trial, measuring the time to progression is one way to see how well a new treatment works. Also called TTP. (NCI Dictionary)
Definition 2
A measure of time after a disease is diagnosed (or treated) until the disease starts to get worse. (NCI Dictionary)
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