This is the drug Onc-201 which we have been writing about a lot. It is for H3K27M mutant brain tumors, usually found in pediatric DIPG, DMG and some Glioblastomas (check your pathology report). A recent presentation at SNO reveals that for recurrent DMG, it helped at least half of the patients, with 20-30% having shrinkage of the tumors. It doesn't help everyone but by itself I have seen it perform miracles on a few kids.
France now offers it for free to patients who need it. There are clinical trials going on involving this drug, and there is an expanded access program for it in the USA.