Clinical Trial Endpoints
A clinical trial will usually define or specify a primary endpoint as a measure that will be considered success of the therapy being trialled (e.g. in justifying a marketing approval). The primary endpoint might be a statistically significant improvement in overall survival (OS). A trial might also define one or more secondary endpoints such as progression-free-survival (PFS) that will be measured and are expected to be met. A trial might also define exploratory endpoints that are less likely to be met.
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“Looks like we got a trial ahead of us. But its not the first time. Weve had to go it alone before, and well have to go it alone again. Were tough. Weve had to be tough ever since Brother Brigham led our people across the plain. Well, they survived and I dang it, well, well, well survive too. Now put out your fires and get to your wagons.”
—Frank S. Nugent (19081965)