The Delaware Valley is an international leader in health, science and innovation. Living in such a brain-rich region, it's not that unusual to find yourself in line at the coffee shop next to a top neurosurgeon or sipping cocktails with a math genius. This kind of mingling can lead to some pretty amazing conversations.

Our health and science team recreates this kind of conversation in a new occasional series called "So, what do you do?"

We put a call-out on Facebook and Twitter for listeners to do our job, stepping behind the microphone to interview an expert in the field of their choosing.

In this edition, Temple University professor Jonathan Singer interviews Wistar Institute cancer researcher Frank Rauscher. Singer asked Rauscher what kinds of changes we will see in cancer treatment in the next few years, and Rauscher describes a model of personalized medicine, where therapies directly attack gene mutations causing cancer.

If you want to interview an expert for a future edition of "So, what do you do?" e-mail us at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .