Overcoming Therapeutic Barriers and the Tumor Microenvironment

The conversation begins with an overview of the tumor microvascular environment, focusing on the abnormal nature of the new vessels that feed tumors. They then discuss the genesis of pressure-enabled drug delivery and the theory behind its efficacy. Dr. Berman explains the TriNav catheter’s micro-valve design, its anti-reflux properties, and how these features enhance tumor drug delivery. He walks through his own procedure technique, comparing and contrasting it to standard embolization, and details the utility of pressure-enabled drug delivery in lobar radioembolization and larger tumors. They also explore the benefits of both balloon occlusion and microvalve catheters.

Real-world cases—including neuroendocrine tumors, segmental HCC, and more—illustrate the thought process around when to use specialized technologies. The episode wraps up with a discussion of the future implications for this technology in other pathologies, cost considerations, and the potential for enhancing drug delivery with innovative approaches.