1.The Applicant’s decision to truncate follow-up at 2-years and 28 days post- randomization in Amendment 9 modified the primary analysis from being event-driven to time-driven. Time-driven analyses are generally not preferred because they do not allow for a pre-specified number of events and analyses run the risk of being under or over powered depending on the number of events that happen to be observed at the cutoff time. The truncation was a business decision, and thus this particular truncation cutoff does not appear to have been based on information from the blinded trial.