Goosebumps - Our M/M study was finished , and at the end results are always un-blinded..

During interim results only ASMC know which patient taking what , and company is notify only If they stop study , for one of few reasons..

--If there is no significant difference between drug and placebo, they may decide that drug is not effective , and stop this study.. ..
--if they see to many serious side effects with drug,
--if to many deaths in placebo , showing definitely ,drug save life's , then they may stop , and recommend approval..

Otherwise study continue , so it need to be blinded..
This is a normal way to do double-blind study...