NORTH BRUNSWICK, N.J.--(BUSINESS WIRE)--Dr. John Rothman, Executive VP of Science and Operations of Advaxis, Inc., (OTCBB: ADXS), the live, attenuated Listeria monocytogenes (Lm) biotechnology company, has been invited to present at GTCbio’s Fifth Annual Modern Drug Discovery & Development Summit in San Diego, CA on Friday, October 16, 2009.