Yes it can be beaten - with the right natural and alternative items and an overall anti-cancer protocol which incorporates healthy diet and lifestyle, stress management, key nutrients and supplements, etc.
Ozone would appear to be a very, very good choice (though I am not an authority on ozone by any means and I defer to Hveragerthi when it comes to ozone). Another is oleander, which also apparently crosses the blood-brain barrier and which has had some good success against brain cancers. Here are three brain cancer case reports of patients who used the patented medicine version of oleander (it is also available in supplement form):
In addition, curcumin in high doses of 2000 or more mg per day and in highly bioavailable form (such as Life Extensions SuperBioCurcumin) is frequenlty used for brain cancers due both to its ability to block brain cancer tumors and its anti-inflammatory properties which may help keep swelling down.