I'm a bit more optimistic. The article specifically mentions that it is too soon to look at efficacy. There could have been a lot going on with these dogs that

I'm a bit more optimistic. The article specifically mentions that it is too soon to look at efficacy. There could have been a lot going on with these dogs that shortened their lives that was unrelated to the GBM. Optimizing the treatment for dosing, timing, etc and applying it sooner are likely to greatly improve its efficacy.