These 22 markers ended up being the best combination of markers that allow us to most effectively diagnose prostate cancer.

There is really intriguing evidence that this particular gene fusion is the causative agent of prostate cancer.

It's a controversial arena -- the PSA is a marker of prostate bulk and size, but it's highly expressed in benign prostate disease as well as cancer -- so in that context it's not a specific marker.

Initially, we envision this new test could be used as a supplement to PSA. A physician might suggest a patient with an elevated PSA have this test before a biopsy to better determine whether it's a cancerous or benign condition. In the future, I think this could replace PSA.

It was a serendipitous discovery, something very surprising to us.