Further down in the 'Conflict of Interest' section of the paper it states the following:
"E.A.C. (E. Antonio Chiocca) is an advisor to Amacathera, Bionaut Labs, Genenta, Inc., Insightec, Inc., DNAtrix Inc., Seneca Therapeutics, Theravir. He has equity options in Bionaut Laboratories, DNAtrix, Immunomic Therapeutics, Seneca Therapeutics, and Ternalys Therapeutics. He is co-founder and on Board of Directors of Ternalys Therapeutics".
And guess what, these companies are all involved in developing treatments for GBM:
Genenta, Inc - GBM Phase 1/2 and other solid tumors
Insightec, Inc - GBM Phase 2
DNAtrix Inc - GBM Phase 2 and 3
Immunomic Therapeutics - GBM Phase 1
Ternalys Therapeutics - also involved in GBM research using microRNA.
And this guy is a Harvard Medical School-affiliated doctor !