Why It's Fierce: In the future, all treatments will be custom-made for the patient. And that's what Genomic Health is all about. Researchers are tracking the molecular signatures of tumors in evaluating the likelihood of disease recurrence and patients' response to treatment, and they believe they're on track to revolutionize cancer care by using sophisticated genomic research to diagnose patients. They've already offered impressive data on signatures that predict breast cancer recurrence and response to chemotherapy. And there's significant new research underway in the clinic. An impressive staff includes several veterans of Genentech.

What to look for: New collaborators and a razor-sharp focus on oncology.