Get on a plane and visit everyone doing the most important cutting edge work in cancer. In person. People love to share their work with an enthusiastic listener.

Publish a blog to keep track of all the great things that are happening. With a few hundred hours of effort, you'll be one of the experts on the upcoming roadmap towards cures for cancers. People will start coming to you for advice. Let all the VCs in the field know that you're available to help with due diligence.

Somewhere along the line, while you are following the above plan, you will just know what you need to do. You will know the maximum leverage activity that you can contribute towards curing cancer.

And follow the plan above even if you are an introvert. You will see that it's not too hard. Sure you will have those frozen moments of doubt as you ride the elevator to meet an esteemed researcher at MIT. But the minute you walk in the room, and he starts telling you about his work, you will be fine.