I think trials on non-life-threatening diseases usually

I think trials on non-life-threatening diseases usually don't get to end early, but I could be wrong. Also overwhelming successful responses are objective. For oral drugs, 50% PASI 75 is considered a big success, but not for biologics.

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Playing Devil's Advocate here: If Prurisol trial results were mirroring across the board the results mentioned by nerdy's post, wouldn't the trial have been stopped by now due to overwhelming successful responses?