Question on the TNBC results: I'm trying to und

Question on the TNBC results:

I'm trying to understand the meaning of "980% increase in 12-Month Overall Survival." Does this mean that TNBC patients on LL actually lived nearly 10 x longer than a placebo or SOC control group? But that couldn't be true, because a 10x increase in 12 mth over survival would imply a 10 year increase in survival time, and we haven't been testing LL against cancer for that long; correct?

So what exactly does a 980% increase in 12 Mth overall survival mean?

Thanks!