"So the comparison may be 70% DFS at 5 years (60 months) Vs 88% (8/9) at 42 months. Bigger issue than no direct control group comparison is small sample size. If 1 person does not make it to 60 months it is 78%"
Good observation, I was thinking the same.
I also think that it's already been 3.5 years of Disease Free Survival, so as more time has passed, recurrence is mostly out of question