RE:RE:RE:RE:RE:RE:RE:RE:CG OncologyStatistical significance is not a requirement with an Accelerated Approval. .... only the use of surrogate endpoints. Surrogate endpoints are used when the endpoint of interest is too difficult and/or expensive to measure routinely and when they can define some other, more readily measurable, endpoint, that is sufficiently well correlated with the first to justify its use as a substitute.
Statistical significance comes into the picture with the post-approval confirmatory trial.
https://pubmed.ncbi.nlm.nih.gov/2727464/#:~:text=Investigators%20use%20a%20surrogate%20endpoint,its%20use%20as%20a%20substitute.