There have been other trials that show statins and NSAIDS have helped brain tumors. This study says no (except Aspirin for grade 3 gliomas). It is hard to prove one way or another with such conflicting information. A randomized blinded trial would be the best way but that will never happen due to cost. The next best thing is for the registry to track these drugs - but record the dosage and length of time the drugs are used, then evaluate it over a large number of patients.