Once the last visit of last subject is completed, case report forms (that sites fill out) will be collected. There will be data checks, queries, and cleaning activities to make sure there are no errors in the data. Once these activities are completed, database is locked (i.e., you are no longer allowed to change the database).
Once the database is locked, the treatment assignment would be revealed and the treatment effect and safety results can be summarized.
Oncostat