Well, sure. But that knowledge is not something that was specific to Denner. He's not a science guy, he's a hedge fund manager. Point is, Denner is not doing anything that was not already in the works. And any cancer trial outcomes are nothing more than long-term speculation at this point (the one that we know of is at least 3 years away from completion).
And maybe I'm wrong, but I don't know that they do clinical trials "in secret" (on humans, anyway).