This shows that the convection enhanced delivery methods have improved to the point where they can get the drug, on average, to over 75% of the tumor, and it should only get better with more experience. They compare this to the PRECISE trial where the drug only got to about 20% of the tumor.
Here is a link to the poster.
There is a phase 2 clinical trial going on now for this treatment, MDNA55, in patients with recurrent or progressive GBM.
Disclaimer: Medicenna Therapeutics is a sponsor of the Musella Foundation