lightrock, I forgot to mention that the official rate of enrollment published by CVM states that 135 patients were enrolled between 2011 and 2013, 195 in 2014, 340 in 2015 and 260 in 2016.
While only slightly above 1/3 of the patients were enrolled before 2015, the midpoint enrollment for all patients was still quite long (63 months).
It is hard to imagine that more than 50% of the SOC patients survived an average of 63 months and remember that when the trial officially ended with data lock (May, 2020) the last enrolled patient was already enrolled for 3.5 years, at a time when the average death rate of SOC is already higher than 45%.